PDF DOWNLOAD Bobcat X331 Excavator Operation & Maintenance Manual 6724471

X 331 Excavator

Operation & Maintenance Manual (S/N 512912001–512912999)

6724471 (8–95)

Printed in U.S.A.

© Melroe Company 1995

OPERATOR SAFETY WARNINGS Operator must have instructions before running the machine.

Untrained operators can cause injury or death.

W–2003–1089

Safety Alert Symbol: This symbol is used for important safety messages. When you see this symbol, follow the safety message to avoid personal injury or death.

CORRECT

WRONG

CORRECT

WRONG

B–10731

MC–1862A

MC–1859A

MC–1865A

Never operate without instructions.

Read machine signs and Operation & Maintenance Manual.

Do not grasp control handles when entering canopy or cab.

Be sure controls are in neutral before starting.

Sound horn and check behind machine before starting.

Never operate without approved canopy or cab.

Never modify equipment.

Avoid steep areas or banks that could break away.

WRONG

WRONG

CORRECT

Never use attachments not approved by Melroe Company.

CORRECT

15o Maximum MC–1867

15o Maximum

MC–1868

MC–1865B

MC–1878C

Use caution to avoid tipping–do not swing heavy load over side of track.

Operate on flat, level ground.

Do not swing load on slopes.

Keep bystanders out of maximum reach area.

Do not travel or turn with bucket extended.

Never carry riders.

Never exceed a 15o slope

Never travel up a slope that exceeds 15o.

CORRECT

CORRECT

CORRECT

to the side.

SAFETY EQUIPMENT 1.

2.

3.

4.

5.

6.

25o Maximum MC–1878B

MC–1859A

Never exceed 25o when going down or backing up a slope.

To leave Excavator, lower the attachment.

Stop the engine.

Seat Belt Swing Lock ROPS Canopy or Cab Machine Warning Signs Safety Tread Grab Handles

Fasten seat belt securely.

Operate controls only from operator’s seat.

9–93

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540, 543 Loader Service Manual

CONTENTS FOREWORD FOREWORD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 PREVENTIVE MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 MACHINE SIGN TRANSLATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

SAFETY

OPERATING INSTRUCTIONS

CALIFORNIA PROPOSITION 65 WARNING Diesel engine exhaust and some of its constituents are known to the State of California to cause cancer, birth defects and other reproductive harm.

PREVENTIVE MAINTENANCE

REFERENCE INFORMATION Write the correct information for YOUR Bobcat Hydraulic Excavator in the spaces below. Always use these numbers when referring to your Hydraulic Excavator.

Bobcat Hydraulic Excavator Serial Number . . . . . . . . . . . . .

Engine Serial Number . . . . . . . .

MACHINE SIGN TRANSLATIONS

SPECIFICATIONS

NOTES:

YOUR BOBCAT EXCAVATOR DEALER: ADDRESS: PHONE: Melroe Company P.O. Box 128 Gwinner, ND 58040–0128 Melroe Europe J. Huysmanslaan 59 B–1651 LOT BELGIUM

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

Melroe Company is ISO 9001 certified ISO 9001 is a set of international standards that control the processes and procedures which we use to design, develop, manufacture, distribute, and service Melroe Company products.

British Standards Institute (BSI) is the Certifier Registrar Melroe chose to assess the Company’s compliance with the ISO 9001 set of standards. The BSI registration certifies that the two Melroe manufacturing plants and the Melroe corporate offices (Gwinner, Bismarck & Fargo) in North Dakota are in compliance with ISO 9001. Only certified assessors, like BSI, can grant registrations. Since registration requires this third–party auditing, it is irrefutable evidence of conformance.

Continued certification is subject to periodic audits.

ISO 9001 means that as a company we say what we do and do what we say. In other words, we have established procedures and policies, and we provide evidence that the procedures and policies are followed.

What does ISO 9001 mean to Bobcat Customers? It means that Melroe Company produces your Bobcat loader, Excavator or Spra–Coupe, and attachments with strict attention to details, using the latest technology and proven techniques.

REGULAR MAINTENANCE ITEMS 3974896

ENGINE OIL FILTER

6647773

FUEL FILTER

6598492

AIR CLEANER

3974310

RADIATOR CAP

6653336

HYDRAULIC FILTER

6662222

BATTERY

6724094

PROPLYLENE GLYCOL ANTI–FREEZE, Premixed – [–34°F (–37°C)]

6724354

PROPLYLENE GLYCOL ANTI–FREEZE, Concentrate

6563328

BLACK GOLD Hydraulic/Hydrostatic Fluid – 5 Gallons

6657299

MOTOR OIL 15W40 CE/SG – 1 Qt.

6657300

MOTOR OIL 15W40 CE/SG – 5 Qt.

6657301

MOTOR OIL 10W30 CE/SG – 1 Qt.

6657302

MOTOR OIL 10W30 CE/SG – 5 Qt.

6657303

MOTOR OIL 30 CE/SG – 1 Qt.

6657304

MOTOR OIL 30 CE/SG – 5 Qt.

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

FOREWORD

FOREWORD This manual gives the owner/operator necessary operating, and preventive maintenance instructions for the Bobcat Hydraulic Excavator.

Read this manual completely and know the Bobcat Hydraulic Excavator before operating and servicing it. All references to ‘‘left’’ or ‘‘right’’ on the excavator are given in relation to the operator’s left or right hand while in the operator’s seat.

For further information, see your Bobcat Hydraulic Excavator dealer. Parts Manuals, Service Manuals and extra Operation & Maintenance Manuals are also available.

An Operator training course is available from your Bobcat dealer.

SERIAL NUMBER LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v DELIVERY REPORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v BOBCAT HYDRAULIC EXCAVATOR IDENTIFICATION . . . . . . . . . . . . . . . . vi

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

SERIAL NUMBER LOCATIONS

A

Always use the FULL serial number (including the first four digits) when requesting service information or when ordering parts. Early or later models (identification made by serial number) may use different parts, or it may be necessary to use a different procedure in doing a specific service operation.

512911922

HYDRAULIC EXCAVATOR SERIAL NUMBER The excavator serial number is on the front of the machine frame, to the left of the boom [A].

P–2932

B

ENGINE SERIAL NUMBER The engine serial number is located by the fuel injection pump on the engine block [B].

P–6433

DELIVERY REPORT

C

The Delivery Report items must be explained to the owner/operator by the dealer. The dealer is to fill out the form and the owner/operator signs the form to indicate his understanding [C].

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

HYDRAULIC EXCAVATOR IDENTIFICATION

CONTROL LEVERS (JOYSTICK)

OPERATOR HANDBOOK

BOOM

OPERATOR SEAT

AUXILIARY COUPLERS SEAT BELT

BUCKET CYLINDER BOOM CYLINDER BUCKET LINK

BLADE CYLINDER BUCKET *CANOPY (ROPS)

GRAB HANDLES

ARM CYLINDER

ARM ENGINE COVER

BLADE

UPPERSTRUCTURE TRACK FRAME

TRACK

B–14409 B–14410

* FOPS is available from your Bobcat Excavator dealer.

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

SAFETY SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix, x FIRE PREVENTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi

SAFETY

MACHINE SIGNS (DECALS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii, xiii

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

SAFETY INSTRUCTIONS SAFETY IS THE OPERATOR’S RESPONSIBILITY The Bobcat Hydraulic Excavator is a highly maneuverable and compact machine. In operation, it is rugged and useful under a wide variety of conditions. This presents an operator with hazards which are common for off highway, rough terrain applications but not unique for use of Bobcat Hydraulic Excavator. The excavator has an internal combustion engine with resultant heat and exhaust. All exhaust gases can kill or cause illness so the excavator must be used with adequate ventilation. The excavator must not be used in an area with explosive dusts or gases or so that the engine exhaust can contact flammable material. The excavator has a spark arrestor muffler which is required for operation in certain areas.

The dealer recommends the capabilities of the excavator and attachments for each application. The dealer demonstrates the safe operation of the excavator according to the manufacturer’s instructional materials which are also available to all operators. The dealer can also identify unsafe modifications or use of unapproved attachments. The attachments and buckets are designed for rated capacity and secure fastening to the Bobcat Hydraulic Excavator. The user must check with the dealer or Melroe Company literature or load diagram to identify safe loads.

The following publications provide information on the safe use and maintenance of the excavator and attachments:

• The Delivery Report is used to check whether complete instructions have been given to the new owner and that the machine is in safe operating condition.

• The Operation & Maintenance Manual delivered with the Bobcat Hydraulic Excavator gives operating information as well

as routine maintenance information. It is a part of the machine and must stay with the machine when it is sold. Replacement Operation & Maintenance Manuals can be purchased from your dealer.

• Every Bobcat Hydraulic Excavator has machine signs (or decals) which instruct on the safe care and operation. The signs and their location are shown in the Operation & Maintenance Manual. Replacement signs are available from your Bobcat Hydraulic Excavator dealer.

• The Bobcat Hydraulic Excavator has a plastic Operator Handbook fastened to the operator cab. Its instructions are avail-

able to the operator. The handbook is available from your dealer in an English, French, German, Dutch, Italian & Spanish edition.

• The CIMA safety manual contains information for safe operation and maintenance.

• The Service Manual and Parts Manual are optional manuals available from your Bobcat Hydraulic Excavator dealer for use by mechanics to do shop–type service and repair.

• The Hydraulic Excavator Operator Training Course is available through your local dealer. This course is intended to provide rules and practices of correct operation of the Hydraulic Excavator.

The dealer and owner/operator review the recommended uses of the excavator and attachments when excavator is delivered. If the owner/operator will be using the excavator for a different application than was originally demonstrated by the dealer, ask the dealer for recommendations on the new use.

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

BEFORE OPERATING THE BOBCAT HYDRAULIC EXCAVATOR Safety Alert Symbol: This Safety symbol is used for important safety messages. When you see this symbol, follow the safety message to avoid personal injury or death.

Operator must have instructions before operating hydraulic excavator.

Untrained operators can cause injury or death.

B–10731

The Excavator must be in good operating condition before use.

Check all of the items on the Service Schedule under the 8–10 hour column.

For your safety, warnings are on the machine and in the Operation & Maintenance manual. Failure to obey warnings can cause injury or death.

W–2044–1285

This notice identifies procedures which must be followed to avoid damage to the machine.

I–2019–0284

SAFE OPERATION NEEDS A QUALIFIED OPERATOR* A QUALIFIED OPERATOR MUST DO THE FOLLOWING:

• UNDERSTAND THE WRITTEN INSTRUCTIONS, RULES AND REGULATIONS • The written instructions from Melroe Company include the delivery report, operator handbook, Operation & Maintenance Manual, and machine signs (decals).

• Check the rules and regulations at your location.

• HAVE TRAINING WITH ACTUAL OPERATION • Operator training must consist of a demonstration and verbal instruction. This training is given by your excavator dealer before the excavator is delivered.

• The new operator should start in an area without bystanders and use all the controls until he can operate safely under all conditions of the work area.

• KNOW THE WORK CONDITIONS • For each material to be handled, the operator must know how to avoid exceeding the rated lift capacity of the excavator. For example, you should not use the excavator for lifting heavy objects.

• The operator must know any prohibited uses or work areas, for example, he needs to know about excessive slopes.

• Know the location of any underground lines. Call local utilities or ‘‘ONE CALL” before you dig.

• Wear tight fitting clothing. Always wear safety glasses when maintaining or servicing excavator. Safety glasses,

hearing protection or an excavator special application kit are required for some work. See your dealer about Melroe Safety equipment.

* For an operator to be qualified, he must not use drugs or alcoholic drinks which impair his alertness or coordination while working. An operator who is taking prescription drugs must get medical advice to determine if he can safely operate a machine.

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

FIRE PREVENTION The excavator has several components that are at high temperature under normal operating conditions. The primary source of high temperatures is the engine and exhaust system. The electrical system, if damaged or incorrectly maintained, can be a source of arcs or sparks. These conditions make it important to avoid applications where explosive dust or gases can be ignited by arcs, sparks or heat.

Flammable debris (leaves, straw, etc.) must be removed regularly. If flammable debris is allowed to accumulate, it will increase the fire hazard. The excavator must be cleaned as often as necessary to avoid this accumulation. This flammable debris in the engine compartment can be a fire hazard when the machine is parked with a hot engine.

The spark arrestor muffler is designed to control the emission of hot particles from the engine and exhaust system, but the muffler and the exhaust gases are still hot. This spark arrestor muffler does not change the need to avoid use of the excavator in an atmosphere with explosive dust or gases or where the exhaust can contact flammable material.

• Do not use the Hydraulic Excavator where explosive dust or gases can be ignited by arcs, sparks, hot components or exhaust gases.

• The engine compartment and engine cooling system must be inspected every day and cleaned if necessary to prevent overheating. Remove all flammable material.

• Check all electrical wiring and connections for damage. Keep the battery terminals clean and tight. Repair or replace any damaged part.

• Check fuel and hydraulic tubes, hoses and fittings for damage and leakage. Tighten or replace any parts that show leakage. Always clean fluid spills.

• Do not use ether or starting fluids on any engine which has glow plugs. These starting aids can explode and injure bystanders.

• Always clean the excavator before doing any welding. Cover rubber hoses, battery and all other flammable parts. Keep a fire extinguisher near the machine when welding.

• Stop the engine and let it cool before adding fuel. No smoking!

• Use the procedure in Operation & Maintenance Manual for connecting the battery.

• Use the procedure in the Operation & Maintenance Manual for servicing the spark arrestor muffler every 100 hours of operation.

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

MACHINE SIGNS (DECALS) Follow the instructions on all the Machine Signs (Decals) that are on the excavator. Replace any damaged machine signs and be sure they are in the correct locations. Machine signs are available from your Bobcat Excavator dealer.

6539688 6589740 ISO 6589843 STANDARD

OPERATOR’S HANDBOOK

6589741 ISO 6589842 STANDARD

6587247 6588730

6537634

6587139 6584897

6533901 6589059

6577754

6539812

6588921

6533899 6589742

6534217

6539813

6588382 6539811

B–14409

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

MACHINE SIGNS (DECALS) (Cont’d)

6708929

6588380

6588716 6643356

6594897

6577754

6589697

6561379

6533899

6565990

6643355

6589742

6589745

B–14410

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

331(S/N512912001–512912999)ExcavatorOperation&MaintenanceManual#6724471–ContentsSection

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

OPERATING INSTRUCTIONS AUDIBLE ALARM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 AUXILIARY POWER OUTLET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 AUXILIARY OPERATION PEDAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 BLADE CONTROL LEVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 BOOM SWING PEDAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 BUCKET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 CAB ELECTRICAL (Cab Option) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 CONTROL LEVER (JOYSTICK) LOCK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 CONTROL LEVERS (JOYSTICKS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Operation of Left Control (ISO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Operation of Right Control (ISO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Operation of Left Control (Standard) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Operation of Right Control (Standard) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 DAILY INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 FUSES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 GETTING ON AND OFF THE MACHINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 HEATER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 HORN BUTTON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 INSTRUMENT PANEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 KEY SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 LIFTING THE HYDRAULIC EXCAVATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 LIGHT SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 OPERATOR CAB FRONT WINDOW (Option) . . . . . . . . . . . . . . . . . . . . . . . . . 22 Closing the Front Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Opening the Front Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 OPERATOR HANDBOOK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 OPERATING PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Breaking in a New Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 General Operation Suggestions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Operating in Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Operating on Slopes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 PARKING THE HYDRAULIC EXCAVATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 SEAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 SPEED CONTROL LEVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 STARTING THE ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Cold Temperature Starting Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Normal Starting Procedure (W/Engine Warm) . . . . . . . . . . . . . . . . . . . . . . . . 14 STEERING LEVER/FOOT PEDALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Forward and Reverse Travel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Making a Counter–Rotation Turn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Turning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 STORAGE COMPARTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 SWING LOCK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 TRANSPORTING THE HYDRAULIC EXCAVATOR . . . . . . . . . . . . . . . . . . . . 19 TWO SPEED FOOT PEDAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 WINDSHIELD WASHER TANK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

–1–

OPERATING INSTRUCTIONS

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

–2–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

GETTING ON AND OFF THE MACHINE

A

Use the grab handles, the tracks and the safety treads to get on and off the machine [A].

P–6443

B

Fasten the seat belt snugly. Adjust the seat belt so that the buckle is centered between your hips [B].

P–2894

C

Lower the left control console before Starting the Engine (See Page 14) [C].

P–2883

Lift upwards on the lever (Item 1) [D] to the rear to release and raise the control console.

D

1

P–2899

–3–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

SEAT

A

The operator seat can be adjusted as follows: (Adjustments should be made with the operator seated).

Release the seat adjustment lever (Item 1) [A]. Slide the seat backward or forward for easy reach of the machine controls.

1 2

Select the seat height position number at the bottom of the knob (Item 4) [A].

Turn the weight adjustment handle (Item 2) [A] until the number in the window (Item 3) [A] matches the number on the bottom of the knob (Item 4) [A].

3

NOTE: Turn the handle (Item 2) [A] clockwise (as viewed in the photo) to increase weight adjustment, counterclockwise to decrease weight adjustment.

4

P–2900

B

Turn the knob (Item 1) [B] to angle the back of the seat for operator comfort.

1

P–2927

CONTROL LEVER (JOYSTICK) LOCK

C

The control lock (Item 1) [C] disconnects the hydraulics from the joystick control levers when the control console is in the raised position. (The joystick control levers will not operate with the console raised).

NOTE: The travel levers, blade lever, boom swing pedal and the attachment operation pedal functions are NOT affected by the control lock.

1

P–2901

Lower the control console to engage the joystick control levers [D].

D

P–2883

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

OPERATOR’S HANDBOOK

A

The Operator’s Handbook is a quick reference for operating the hydraulic excavator and is located behind the operator seat on the right side of the cab [A].

Read this Operation & Maintenance Manual and Operator’s Handbook before operating the hydraulic excavator.

P–6435

STORAGE COMPARTMENT

B

The storage compartment, located behind the operator seat at the left side of the cab, can be used to store items (Example: Operation & Maintenance Manual) and then locked [B] & [C]. The storage compartment lock uses the same key as the ignition switch.

INSTRUMENT PANEL The instrument panel has the following instruments [D]: 1. PREHEAT INDICATOR LAMP – When turning the key switch to the ‘‘PREHEAT” position, the lamp comes‘‘ON”, showing the glow plugs are heating.

P–6436

2. ENGINE TEMPERATURE LAMP – (Overheat indicator) When the engine coolant temperature exceeds the allowable temperature range, the lamp comes ‘‘ON’’ and the audible alarm sounds. STOP the engine.

C

3. LOW FUEL INDICATOR LAMP – When fuel level is low (2.5 gals. [9,5 L.]), the lamp comes ‘‘ON’’. Add fuel.

4. FUEL GAUGE – Shows the amount of the fuel in the tank.

5. HOURMETER – Records total operating hours. If the ignition key is left in the run position, with the engine ‘‘OFF’’, the audible alarm will sound.

P–6437

6. CHARGING GAUGE – Shows battery charge rate.

7. ENGINE TEMPERATURE GAUGE – Shows engine coolant temperature. Audible alarm sounds when temperature reaches 230°F. (110°C.).

D 8

8. ENGINE OIL LAMP – When the engine oil pressure is low, the lamp comes ‘‘ON’’ and audible alarm sounds. STOP the engine.

1 1 2

7

NOTE: To check oil pressure and water temperature lamps, turn the key to the ‘‘ON’’ position.

Lamps should stay on for 10 seconds. Allow five seconds cooling time and try again.

3 4

6 5

P–2921

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

KEY SWITCH

A

The key switch has the following functions [A]: A. Key switch is ‘‘OFF’’, and the engine stops.

B

A D

B. ‘‘PREHEAT’’ position – Hold switch in this position to activate the glow plugs for starting in cold weather conditions. See Decal (Item 1) [A] for glow plugs heating times and also Page 15.

C

1

C. ‘‘START’’ the engine.

D. ‘‘ON’’ (run) position – When the engine is running release the key and this position is obtained automatically. The fuel gauge back light is illuminated when the key switch is in the on (run) position.

NOTE: Always turn key switch and all accessories to ‘‘OFF’’ position after the engine is stopped or battery will discharge. Audible alarm will sound if the key is in the ‘‘ON’’ position with the engine stopped.

See Pages 14 and 15 for the starting procedure.

P–2516

B 1

FUSES

2

The fuses are located in the right hand control console, below the seat. Loosen the two knobs and remove the access plate.

3 4

1. 20 AMP. FUSE – This fuse supplies power to the ignition switch [B].

2. 10 AMP. FUSE – This fuse supplies power to the dash panel and hour meter [B].

P–2947

C

3. 15 AMP. FUSE – This fuse supplies power to the light switch [B].

4. 15 AMP. FUSE – This fuse supplies power to the horn and the heater (if equipped) [B].

AUDIBLE ALARM An audible alarm (Item 1) [C], located in the right hand console, will sound when these conditions exist: • When the key is in the ‘‘ON’’ position with the engine stopped.

• When there is low engine oil pressure.

1 P–2949

• When there is high engine coolant temperature.

D

LIGHT SWITCH The light switch (Item 1) [D] has the following functions.

A. Light switch is ‘‘OFF’’

1

B. Strobe light/flasher (if equipped) C. Front work lights (plus any lights used with position B)

A

D. Additional work lights (if equipped) – (plus any lights used with positions B and C)

D C

B P–2926

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

AUXILIARY POWER OUTLET

A

The auxiliary power outlet (Item 1) [A] is used for supplying electrical current for operator supplied electrical options.

1

This outlet has 12 volt electrical current at all times.

P–2931

CAB ELECTRICAL (Cab Option)

B

The cab overhead console has the following components [B]:

2

1. 5 AMP. FUSE – This fuse (Item 1) [B] supplies the power for the wiper/washer and for the interior light.

1

3

2. WIPER/WASHER SWITCH – Turn the switch (Item 2) [B] to activate wipers,‘‘OFF–ON”. Push switch ‘‘IN’’ to activate the washer.

3. INTERIOR LIGHT – Push the button (Item 3) [B] on the side of the light to illuminate.

P–2267

C

HEATER

1

The heater has the following controls: 1. FAN SWITCH – Turn the switch (Item 1) [C] to activate the fan, OFF–LOW–MED–HI. 2. TEMPERATURE CONTROL – Move the lever (Item 2) [C] up to increase the temperature, move the lever down to decrease the temperature.

2 WINDSHIELD WASHER TANK (if equipped)

P–2830

D

Open the right hand side cover. The washer tank is located in the right rear of the engine compartment.

Remove the cap (Item 1) [D] and fill with washer fluid. In cold weather operation, use the washer fluid at 100% concentration.

1

The wiper/washer switch is used to activate the washer pump.

P–6438

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

CONTROL LEVERS (JOYSTICKS)

A

The work equipment is operated by using the left and right control levers (joysticks) [A] & [B].

Operation of Left Control Lever (ISO) Arm and Swing (Decal P/N 6589741).

The left lever is used to operate the arm and to swing the upperstructure [A]:

P–2944

1. Arm out.

2. Arm out and swing right.

3. Swing right.

4. Arm in and swing right.

5. Arm in.

6. Arm in and swing left.

7. Swing left.

8. Arm out and swing left.

Before swinging the upperstructure, make sure the swing lock is disengaged.

I–2051–0189

PI–8226

Operation of Right Control Lever (ISO)

B

Boom and Bucket (Decal P/N 6589740).

The right lever is used to operate the boom and bucket [B].

1. Boom lower.

2. Boom lower and bucket dump.

3. Bucket dump.

4. Boom raise and bucket dump.

5. Boom raise.

6. Boom raise and bucket curl.

7. Bucket curl.

8. Boom lower and bucket curl.

P–2915

Before leaving the machine: • Lower the attachments to the ground.

• Stop the engine & remove the key.

W–2167–0195

PI–8227

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

CONTROL LEVERS (Cont’d)

A

The work equipment is operated by using the right and left control levers (joysticks) [A] & [B].

Operation of Left Control Lever (Standard) Boom and Swing (Decal P/N 6589842).

The left lever is used to operate the boom and swing the upperstructure [A]:

P–2944

1. Boom Lower 2. Boom Lower and Swing Right 3. Swing Right 4. Boom Raise and Swing Right 5. Boom Raise 6. Boom Raise and Swing Left 7. Swing Left 8. Boom Lower and Swing Left

Before swinging the upperstructure, make sure the swing lock is disengaged.

I–2051–0189

PI–2864

Operation of Right Control Lever (Standard)

B

Arm and Bucket (Decal P/N 6589843).

The right lever is used to operate the arm and bucket [B]: 1. Arm Out 2. Arm Out and Bucket Dump 3. Bucket Dump 4. Arm In and Bucket Dump 5. Arm In 6. Arm In and Bucket Curl 7. Bucket Curl 8. Arm Out and Bucket Curl

P–2915

Before leaving the machine: • Lower the attachments to the ground.

• Stop the engine & remove the key.

W–2167–0195

PI–2863

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

SWING LOCK

A

When the swing locking lever (Item 1) [A] is engaged (locked position), the upperstructure of the excavator is locked to the track frame and will not swing.

LOCKED

1

P–6439

B

Lift the swing locking lever (Item 1) [B] to disengage the upperstructure from the track frame. Turn the lever to the right to put the pin in the unlocked position.

UNLOCKED 1

The swing lock lever must be engaged when transporting the machine.

I–2059–0195 P–6440

C 1 Never engage the swing control lever when the swing lock lever is engaged. Engage the swing lock lever only after the upperstructure is parallel with the track frame.

I–2052–0189

HORN BUTTON The horn button (Item 1) [C] is located in the right control lever (joystick) grip.

P–6441

–10–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

SPEED CONTROL LEVER

A

The speed control lever is used to control the engine speed [A].

1

1. LOW IDLE POSITION – Pull the lever backward (position 1) for low idle, (Approximately 1000 RPM).

2. HIGH IDLE POSITION – Push the lever fully forward (position 2) for full engine RPM.

2 P–6442

B

TWO SPEED FOOT PEDAL Slow Speed: When pedal (Item 1) [B] is in the up position (Normal).

1

High Speed: When pedal (Item 1) [B] is pushed and held down.

SLOW

HIGH P–2902

–11–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

STEERING LEVERS/FOOT PEDALS

A

Forward and Reverse Travel

2

NOTE: The following procedures describe forward, reverse, right & left as though you were seated in the operator’s seat.

1

Put the blade so that it is at the front of the machine as you sit in the operator’s seat. Slowly push both steering levers* forward for forward travel. Pull both steering levers backward for reverse travel. *There are also foot pedals to operate the steering levers in the same manner.

P–6443

B

Right Pivot Turn (Forward)

C

Left Pivot Turn (Forward)

• Check the blade location before traveling.

When the blade is to the rear, operate the steering levers/foot pedals in the opposite direction to when the blade is in the front.

• Move the steering levers/foot pedals slowly.

Abrupt lever motion will cause the machine to jerk.

W–2138–0189

Turning B–10979 MC–2109

Right Turn Push the left steering lever forward to turn to the right [B] while traveling in a forward direction.

D

Pull the left steering lever backward to turn to the right [D] while traveling in a reverse direction.

Right Pivot Turn (Reverse)

E

Left Pivot Turn (Reverse)

Spin–Turn Right Push the left steering lever forward and pull the right steering lever backward [F].

Left Turn Push the right steering lever forward to turn to the left [C] while traveling in a forward direction.

B–10979 MC–2109

Pull the right steering lever backward to turn to the left [E] while traveling in a reverse direction.

Spin–Turn Left Push the right steering lever forward and pull the left steering lever backward [G].

F

G

Counter–Rotation Turn (Right)

Counter–Rotation Turn (Left) B–10979 MC–2109

–12–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

BOOM SWING PEDAL

A

Raise the pedal lock/footrest (Item 1) [A] to operate the boom swing pedal.

3

Push the pedal (Item 2) [A] on the right side to swing the boom to the right and push the pedal on the left side to swing the boom to the left.

1

4 B–11164

NOTE: The purpose of the boom swing pedal is to offset the boom with respect to the upperstructure for digging close to a structure.

AUXILIARY OPERATION PEDAL

2 P–6444

B

Hydraulic fluid, tubes, fittings and quick couplers can get hot when running machine and attachments. Be careful when connecting and disconnecting quick couplers.

2–WAY FLOW

W–2220–1195

1–WAY FLOW

Raise the pedal lock/footrest (Item 3) [A] to operate the auxiliary operation pedal.

The pedal (Item 4) [A] controls optional equipment when mounted on the arm.

The excavator is equipped with 2–way flow auxiliary lines.

Push pedal (Item 4) [A] to activate hydraulic function.

Right side of pedal is hydraulic pressure/flow to the female coupler and left is hydraulic pressure/flow to the male coupler.

1 P–2913

C 2

AVOID INJURY OR DEATH Before moving the auxiliary flow control knob: • Lower the blade to the ground.

• Lower the bucket to the ground.

• Shut–off the engine.

1

The flow control knob (Item 1) [B] is located in front of the excavator frame by the boom cylinder.

P–6445

To change to one–way flow for hydraulic breaker operation (for reduced back pressure to tank) pull the knob (Item 1) [B]. The pedal (Item 4) [A] when pushed to the right only, is now pressurized.

D

During two–way flow operations, the female coupler (Item 1) [C] is pressurized when the pedal is pushed to the right and the male coupler (Item 2) [C] is pressurized when the pedal is pushed to the left.

BLADE CONTROL LEVER

1

The lever (Item 1) [D] is used to raise and lower the blade.

A

Position A – Push Forward – Lowers the blade.

Position B – Neutral – Blade is stopped and held in position Position C – Pull Backward – Raises the blade.

B C

NOTE: Keep the blade lowered when digging to help stabilize machine.

P–2922

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

DAILY INSPECTION

A

Check the following items before starting each day: *Operator Canopy or Cab (ROPS) and mounting hardware. *Seat belt and mounting hardware. *Damaged decals, replace as needed. *Air cleaner and intake hoses. *Engine coolant level and for coolant leaks. *Engine oil level and for engine leaks. *Clean engine area of any flammable material. *Hydraulic fluid level and system for leaks. *Grease all pivot points. *Cylinder and attachment pivot points. *Track Tension. *Repair broken and loose parts.

Fluids such as engine oil, hydraulic fluid, coolants, etc. must be disposed of in an environmentally safe manner.

Some regulations require that certain spills and leaks on the ground must be cleaned in a specific manner. See local, state and federal regulations for correct disposal.

P–6443

B 1

Instructions are necessary before operating or servicing machine. Read Operation & Maintenance Manual, and signs (decals) on machine. Follow warnings and instructions in the manuals when making repairs, adjustments or servicing. Check for correct function after adjustments, repairs or service.

Failure to follow instructions can cause injury or death.

W–2144–1089

2 P–6442

STARTING THE ENGINE

C

Normal Starting Procedure (With Engine Warm) Fasten the seat belt.

Lower the control console to the locked position.

Put all control levers in the neutral position [A].

Move the engine speed control to low idle (position 1) [B].

Turn the key to PREHEAT position (if required), the light will come on. Hold the key in the heat position for 0 to 5 seconds [C].

Turn the key to the START position [D].

When the engine is started, release the key and it will return to the run (ON) position.

6589059

Stop the engine if the warning lights and audible alarm do not go OFF. Check for the trouble before starting the engine again.

D

To stop the engine, turn the key switch to the OFF position.

OFF PREHEAT ON START

Do not engage the starter for longer than 15 seconds at a time. Longer use can damage the starter by over heating. Cool the starter for one minute between uses.

I–2034–0284

P–2516

–14–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

STARTING THE ENGINE (Cont’d)

A

2

AVOID INJURY OR DEATH When an engine is running in an enclosed area, fresh air must be added to avoid concentration of exhaust fumes. If the engine is stationary, vent the exhaust outside. Exhaust fumes contain odorless, invisible gases which can kill without warning.

W–2050–1285

1

• Engines can have hot parts and hot exhaust

P–2924

gas. Keep flammable material away.

• Do not use machines in atmosphere containing explosive gas.

W–2051–1086

B

Cold Temperature Starting Procedure Use the following procedure to make starting easier: Replace the engine oil with the correct type and viscosity for the anticipated starting temperature (See ‘‘Oil Specifications’’, Page 60).

Make sure the battery is fully charged.

Install an engine heater.

Follow the steps under ‘‘Normal Starting Procedure’’ and repeat the steps below until engine starts:

6589059

C PREHEAT OFF Do not use ether with glow plugs (preheat) systems. Explosion can result which can cause injury or death.

W–2071–1285

PREHEAT OFF ON

ON START

Push the speed control lever fully forward (Position 2) [A].

START

Turn the key to ‘‘PREHEAT’’ position [B] & [C], the light will come on. Preheat the engine for 15 seconds maximum.

Turn the key to ‘‘START’’ position and start the engine [C].

PI–2824

Release the key, and it will return to the run (‘‘ON’’) position.

When the engine speed increases, move the speed control lever immediately to the idling position (Item 1) [A].

Turn the key to the ‘‘OFF’’ position to stop the engine [C].

Do not engage the starter for longer than 15 seconds at a time. Longer use can damage the starter by over heating. Cool the starter for one minute between uses.

I–2034–0284 –15–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

OPERATING PROCEDURE

When operating in water or crossing streams, first check the soil conditions, depth and flow of water. Never operate in water higher than the bottom of the swing circle.

Breaking in a New Machine When operating on a public road or highway, always follow local regulations. For example: Slow Moving Vehicle Sign or Directional Signals may be required.

NOTE: Be careful when removing the machine from water. The engine may become filled with water and damage could result.

A new machine requires careful operation during the first 100 hours to break in various parts.

Do not operate the machine when visibility is poor (fog, mist or smoke).

If a machine is subjected to hard use during the initial operation, the performance and service life will be reduced.

If it is necessary to operate the control levers when moving the machine near a cliff, road shoulders, or sloping ground, stop the machine travel before operating any work equipment levers.

Do the following when operating a new machine:

•

After starting, let the engine idle for 5 minutes so the engine and components can warm up.

Do not dig under the machine.

•

Avoid operation with heavy loads or at high speeds.

•

Avoid sudden starting or stopping or abrupt motions.

Check with utility companies, for underground electrical, water, gas lines, etc. Work slowly in areas of underground utilities.

Do not allow the bucket teeth to contact the ground when swinging the upperstructure.

General Operation Suggestions

Do not move the machine with the bucket in the ground or trench.

Know where the first aid kit and fire extinguisher are and know how to use them. Know how to contact emergency assistance.

Do not use the bucket as a breaker or pile driver. It is better to excavate hard or rocky ground after breaking it with other equipment. This will reduce damage to the machine.

When operating on uneven ground or in places where there are obstacles, do the following:

•

Operate as slow as possible and avoid sudden changes in direction.

•

Avoid traveling over objects (such as rocks, trees, stumps, etc.).

To brake the machine when going down a slope, put the steering levers in NEUTRAL position. This will engage the hydrostatic braking.

When the engine stops on a slope, move the steering levers to the neutral position. Lower the boom/bucket.

When working in wet or soft ground, put planking on the ground to prevent the machine from getting stuck. If the machine is stuck in soft soil, use the following procedure to move the machine to firm ground:

•

NOTE: The left hand control console must be in the locked down position, with the engine stopped, to activate the accumulator pressure to lower the boom/bucket (attachments) to the ground.

If one track or both tracks are stuck in soft soil, push the bucket down against the ground to raise the track (or tracks, one side at a time) off the ground.

•

Place timber (planks) under the track(s) and drive the machine to firm ground.

•

It may help to put the bucket into the ground in front and move the arm as if you were digging to help move the machine.

Start the engine and resume the operation.

–16–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

OPERATING PROCEDURES (Cont’d)

A

TRAVELING DOWN OR BACKING UP SLOPES

AVOID INJURY OR DEATH

• Do not travel across or up slopes which are

over 15 degrees to the side, or to the back of machine or 25 degrees to the front. Keep boom centered while traveling.

• Keep attachments as low as possible when traveling on slopes or in rough conditions.

MC–1878B

W–2199–0595

• • • •

B

When going down a slope, control the speed with the steering levers and the speed control lever.

When going down grades that exceed 15 degrees, put the machine in the position shown, and run the engine slowly [A].

Operate as slow as possible and avoid sudden changes in lever direction.

Avoid traveling over objects (such as rocks, trees, stumps, etc.).

TRAVELING ON SIDE SLOPES

TRAVELING UP SLOPES

15 °Maximum

15° Maximum MC–1878C

Keep attachments as low as possible when traveling on slopes or on rough conditions.

C

RECOMMENDED POSITION FOR WORKING ON A SLOPE

W–2200–0595

Stop the machine travel before moving the upper equipment controls. Never allow the blade to strike a solid object. Damage to the blade or hydraulic cylinder can result.

Operating on a slope is inherently dangerous. recommended to level the work area [C].

It is

If this is not possible, the following procedures should be used: MC–1865C

Do not work on slopes which are over 15 degrees.

Slow down the work cycle.

Avoid working with the tracks across the slope as this reduces stability and increases the tendency for the machine to slide. Position the excavator with the blade down hill and lowered.

Avoid swinging or extending the bucket farther than necessary in a down hill direction. When you must swing the bucket down hill, keep the dipper arm low and skid the bucket downhill.

When working with the bucket on the uphill side, keep the bucket as close to the ground as possible. Dump the spoil far enough away from the trench or hole to prevent the possibility of a cave in.

–17–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

Operating in Water

A

Mud and water should be removed from the machine before parking. If possible, park the machine on boards or concrete to prevent the track or undercarriage from freezing to the ground and preventing machine movement.

Do not operate or immerse the Excavator in water higher than the bottom of the swing circle [A].

Properly grease the Excavator when it has been operated or immersed in water for a period of time.

Water must be removed from the cylinder rods. If water freezes to the cylinder rod, the cylinder seals can be damaged when the rod is retracted.

Water Level

PARKING THE HYDRAULIC EXCAVATOR

MC–1857

1. Stop the machine on level ground. Lower the work equipment and the blade to the ground.

B

2. Run the engine at idle speed for about 5 minutes to allow it to cool.

3. Push the speed control lever fully to the rear [B].

4. Turn the key switch to the ‘‘OFF’’ position [C].

5. Disconnect the seat belt. Remove the key from the switch to prevent operation of machine by unauthorized personnel.

P–6177

C OFF PREHEAT ON START

P–2516

–18–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

TRANSPORTING THE HYDRAULIC EXCAVATOR

A

• Make sure the parking brakes on the transport vehicle are engaged and wheels are blocked.

• Align the ramps with the center of the transport vehicle.

Secure the ramps to the truck bed and be sure ramp angle does not exceed 15 degrees.

• Use metal loading ramps and slip resistant surface.

• Make sure the ramps are the correct length and width, and can support the weight of the machine.

• Determine the direction of the track movement before

moving the machine (blade forward). Engage the swing lock pin to lock the upperstructure.

P–2831

• Move the machine forward onto the transport vehicle [A].

B

• Do not change direction of the machine while it is on the ramps.

• After loading the machine, position the arm and bucket as shown [B].

• Lower the boom.

• Stop the engine and remove the key.

Use the following procedure to fasten the Excavator to the transport vehicle:

• Put blocks under the front and rear of the track

P–2832

shoes.

• Fasten holddown chains to the front corners of the

C

blade and to the tie down loop at the track frame to prevent it from moving when going up or down slopes, or during sudden stops [C] & [D].

• Use chain binders to tighten the chains and then safely tie the chain binder levers to prevent loosening.

• When transporting the machine, observe the rules, motor vehicle laws and vehicle limit ordinances. Use a transport and towing vehicle of adequate length and capacity.

P–2278

D

Steel loading ramps are needed to support the weight of the machine when loading onto a transport vehicle. Wood ramps can break and cause personal injury.

W–2058–0887

P–2833

–19–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

LIFTING THE HYDRAULIC EXCAVATOR

A

Fully extend the cylinders of the bucket, arm & boom.

Put the work equipment control levers in neutral and engage the swing locking lever.

AVOID INJURY OR DEATH • Use a lifting fixture with sufficient capacity for the weight of the excavator plus any added attachments.

• Maintain center of gravity and balance when lifting.

• Do not swing boom or upperstructure.

Engage the swing locking lever.

• Never lift with operator on machine.

MC–1857A

Secure the lifting fixture sling to the lifting holes at the left and right side at the rear of the frame and the lift eye on the boom [A].

Install spreader bar above the cab to prevent lifting fixture from rubbing on ROPS or the rear engine cover.

LIFTING A LOAD Do not exceed rated load capacity, See ‘‘Lifting Decal’’, Page 50.

Use chain assembly (P/N 6665374) for lifting.

B

To install the chain assembly: Extend bucket cylinder fully. Stop the engine.

Wrap chain assembly around the arm or the bucket mounting plate [B].

Keep safety hook to the side with a small loop in the chain [B].

Attach the secondary lift system (i.e. cables, chains or slings) to the loop of the chain assembly.

P–3753

–20–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

BUCKET

A

Removal

1

AVOID INJURY OR DEATH Stop the machine on a firm flat surface. When removing or installing attachments (such as a bucket), always have a second person in the operator’s seat, give clear signals and work carefully.

2 P–6446

W–2140–0189

B

Select a flat level surface. Put the bucket on the ground.

Remove the fasteners from the pivot pins (Item 1 & 2) [A].

Remove the pivot pins and keep them clean. Do not damage the dust seals in the arm and the link.

1

Installation Install the arm into the bucket and align the hole. Install the pivot pin (Item 1) [A].

Attach the link to the other hole and install the pivot pin (Item 2) [A].

P–3010

NOTE: Install shims (Item 1) [B] as needed to eliminate any gap between the bucket and the arm and the links.

Install the fasteners. Add grease to the pivot pins before operation.

Never use attachments or buckets which are not approved by Melroe Company. Buckets and attachments for safe loads of specified densities are approved for each model.

Unapproved attachments can cause injury or death.

W–2052–1285

–21–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

CAB OPTION

A

331(S/N512912001–512912999)ExcavatorOperation&MaintenanceManual#6724471–OperatingInstructionsSection

Opening the Front Window Move the four (4) window latch pins inward and place them in the unlatched position [A].

P–6218

Grab both window handles and pull the top of the window inward [B].

B

When the top of the window moves inward, lift up on the window handles and the window will move up and will pivot inward, over the operators head.

When the window is over the operators head, lift the bottom of the window upward. The top edge of the window will engage the pocket at the top rear of the cab.

P–6219

Hold the bottom of the window up and move the two (2) bottom window latch pins outward. Make sure that the pins are secured to the open window latch points [C].

C

Closing the Front Window Hold the bottom of the window up and move the two (2) window latch pins inward and place them in the unlatched position [C].

Grab both window handles and pull the bottom of the window downward [B].

When the window is in the down and vertical position, push outward at each corner latch point and move the latch pins into the locked position [A].

P–6220

CAB/CANOPY FOPS (Falling Object Protective Structure)

D

1

A cab/canopy FOPS (Falling Object Protective Structure) (Item 1) [D] is available as a field installed accessory.

This kit is available through Melroe Parts Sales. See your excavator dealer to order this part.

B–14271

–22–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

PREVENTIVE MAINTENANCE AIR CLEANER SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 ALTERNATOR BELT ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 COOLING SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Coolant Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Coolant Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 ELECTRICAL SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Removal and Installation of the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Service the Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Using a Booster Battery (Jump Starting) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 ENGINE COVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

PREVENTIVE MAINTENANCE

ENGINE LUBRICATION SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Checking Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Replacement of Oil and Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 FINAL DRIVE CASE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Checking Oil Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Draining Final Drive Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 FUEL SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Filling the Fuel Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Fuel Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Fuel Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Fuel System Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Removing Air From the Fuel System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 HEATER FILTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Removal and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 HYDRAULIC SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Checking and Adding Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Diagnostic Couplers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Hydraulic Reservoir . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Replacement of Hydraulic Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Return Line Filter Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 JOYSTICK CONTROL CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 ISO to Standard Control Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Standard to ISO Control Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 LUBRICATION OF THE HYDRAULIC EXCAVATOR . . . . . . . . . . . . . . . . . . . 40 SERVICE SCHEDULE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 SPARK ARRESTOR MUFFLER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 TRACK TENSION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Rubber Tracks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Steel Tracks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

–23–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

MAINTENANCE SAFETY Instructions are necessary before operating or servicing machine, Read Operation & Maintenance Manual, Handbook and signs (decals) on machine. Follow warnings and instructions in the manuals when making repairs, adjustments or servicing. Check for correct function after adjustments, repairs or service. Failure to follow instructions can cause injury or death.

W–2003–1089

Safety Alert Symbol: This symbol is used for important safety messages. When you see this symbol, follow the safety message to avoid personal injury or death.

CORRECT

CORRECT

CORRECT

B–10731

B–14148

B–14142

Bobcat without

Use the correct procedure to lift and support the excavator.

Always lift the blade fully before installing jackstands.

Cleaning and maintenance are required daily.

Keep rear door closed except for service. Close and latch door before operating the excavator.

WRONG

WRONG

WRONG

B–14147

B–14141

B–14145

Have good ventilation when welding or grinding painted parts.

Wear dust mask when grinding painted parts. Toxic dust and gas can be produced.

Vent exhaust to outside when engine must be run for service.

Exhaust system must be tightly sealed. Exhaust fume can kill without warning.

Always lower the bucket and blade to the ground before doing any maintenance.

Never modify equipment or add attachments not approved by Melroe Company.

WRONG

WRONG

WRONG

B–14146

B–14143

B–6589

Stop, cool and clean engine of flammable materials before checking fluid.

Never service or adjust machine with the engine running unless instructed to do so in the manual.

Avoid contact with leaking hydraulic fluid or diesel fuel under pressure. It can penetrate the skin or eyes.

Never fill fuel tank with engine running, while smoking or when near open flame.

Keep body, jewelry and clothing away from moving parts, electrical contacts, hot parts and exhaust.

Wear eye protection to guard from battery acid, compressed springs, fluids under pressure and flying debris when engines are running or tools are used. Use eye protection approved for type of welding.

Lead–acid batteries produce flammable and explosive gases.

Keep arcs, sparks, flames and lighted tobacco away from batteries.

Batteries contain acid which burns eyes or skin on contact.

Wear protective clothing. If acid contacts body, flush well with water. For eye contact flush well and get immediate medical attention.

Never service the Hydraulic Excavator instructions.

Maintenance procedures which are given in the Operation & Maintenance Manual can be performed by the owner/operator without any specific technical training. Maintenance procedures which are not in this manual must be performed ONLY BY QUALIFIED BOBCAT SERVICE PERSONNEL. Always use genuine Bobcat replacement parts.

–24–

4–93

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

MAINTENANCE SAFETY

• Never service the machine without instructions.

• Cleaning and maintenance are required daily.

• Keep engine cover closed except for service. Close and latch the cover before operating.

• Never fill the fuel tank with the engine running, while smoking or when near open flame.

• Never modify equipment or add attachments not approved by Melroe Company

• Stop, cool and clean the engine of flammable materials before checking fluid levels.

6. Do not continuously apply more than 200 V. 7. Install the ground cable (from welder) at least 3 ft.

(1 m) away from the part being welded.

8. When attaching ground cable (from welder) make sure there are no seals or bearings between the ground and the part to be welded.

• Lead–acid batteries produce flammable and explosive gases. Keep arcs, sparks, flames and lighted tobacco away from batteries.

• Do not handle electrical equipment while wearing wet

gloves, or in wet places, this can cause an electrical shock.

• Never service or adjust machine with engine running

• Do not allow unauthorized personnel near the machine

• Keep body, loose objects and clothing away from mov-

• When working under the machine, always place signs

unless instructed to do so in this manual.

ing parts, electrical contacts, hot parts and exhaust.

Never wear loose clothing or jewelry around machinery.

• Avoid contact with leaking hydraulic fluid or diesel fuel

which is under pressure, it can penetrate the skin and eyes.

Wear safety glasses to prevent eye injury when any of the following conditions exist:

• When fluids are under pressure.

• Flying debris or loose material is present.

• Engine is running.

• Tools are being used.

• Do not check alternator belt tension with engine run-

ning. Stop the engine before inspecting any rotating parts.

• Always disconnect the negative (–) cable from the battery before doing electrical maintenance or welding.

• When tracks are adjusted, do not put your fingers between the track and rollers.

• Perform only the service procedures shown in this

during maintenance.

to that effect on the operator’s seat and around the machine.

• When maintenance is done with equipment raised, it must be securely blocked.

Relieve pressure on work cylinders as follows: 1. Lower work equipment to the ground. Stop the engine.

2. Operate all the control levers through their functions.

NOTE: Control console must be lowered to the latched position to activate the joystick function and relieve the accumulator pressure.

3. Loosen the cap on the hydraulic tank.

• When working on rocky ground, avoid damage to the under carriage. Check for loose nuts and bolts, cracks and other damage.

• Before working in water, rain or snow, check that plugs

and valves are tightened. When finished, wash the machine, then check for cracks, loose or missing nuts or bolts. Lubricate the machine.

manual; unless you have had special Bobcat Hydraulic Excavator training.

When welding on the machine, do the following: 1. Disconnect the negative (–) cable at the battery.

–25–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

SERVICE SCHEDULE Maintenance work must be done at regular intervals. Failure to do so will result in excessive wear and early failures. The service schedule is a guide for correct maintenance of the Hydraulic Excavator.

Instructions are necessary before operating or servicing machine.

Read Operation & Maintenance Manual, Handbook and signs (decals) on machine. Follow warnings and instructions in the manuals when making repairs, adjustments or servicing. Check for correct function after adjustments, repairs or service. Failure to follow instructions can cause injury or death.

W–2003–1089

SERVICE SCHEDULE ITEM Engine Air Cleaner Engine Oil Engine Coolant System Indicator Lights Operator Cab Seat Belt Safety Signs (Decals) Tracks All Machinery Pivot Points Hyd. Fluid, Hoses & Tubelines Fuel Tank/Fuel Filter Swing Circle Swing Pinion Spark Arrestor Muffler Engine Oil & Filter Alternator/Fan Belt Final Drive Case Hydraulic Filter Fuel Filter Battery Cooling System Alternator & Starter Cooling System Hydraulic Tank Final Drive Case Drain Return Line Filter Cab Heater Air Filter

HOURS

SERVICE REQUIRED

8–10

50

100

250

500 1000

Replace the filter element only when the red ring shows in the indicator window Check for leaks and damaged components.

Check the oil level & add oil as needed.

Check coolant level in recovery tank.

Check for correct operation.

Check the fastening bolts, nuts, & condition of cab/canopy.

Check the condition & that fasteners are tight.

Check for damaged signs (decals) replace as needed.

Check & adjust tension.

Lubricate 25 grease fittings.

Check fluid level & add as needed. Check for damage & leaks.

Repair & replace as needed.

Drain water & sediment from fuel tank/fuel filter.

Lubricate two grease fittings.

Lubricate one grease fitting.

Clean spark chamber.

Replace oil & filter element.

Check & adjust tension.

Check fluid level & add oil as needed.

Replace filter element.

Replace filter element.

Check & clean cable ends & check electrolyte level.

Clean the radiator fins.

Check the condition.

Drain, flush & add new coolant to the cooling system.

Change the fluid, clean fill neck strainer.

Change the oil.

Clean filter with solvent, dry with air pressure.

Clean the filter.

*After the first 50 hours of machine operation do the following: • Replace the hydraulic filter.

• Check the condition of the alternator/fan belt.

• Check the condition of the drain line filter. **After the first 100 hours of machine operation do the following procedures: • Change oil in final drive case.

1.

2.* *

4.5.

3. ** *

Or Every 12 Months.

–26–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

ENGINE COVER

A

AVOID INJURY Never service or adjust the machine when the engine is running unless instructed to do so in this manual.

W–2012–0290

Keep the engine cover closed when operating the machine.

P–6448

W–2141–0189

Open the engine cover to service the engine. Pull on the latch and lift the engine cover up until it is fully raised [A].

B 1

AIR CLEANER SERVICE See the Service Schedule (Page 26) for the correct service interval.

Check the air intake hose for damage. Check the air cleaner housing for damage. Check to make sure all connections are tight.

Replace the large (outer) filter element only when the red ring shows in the window of the condition indicator (Item 1) [B].

2

NOTE: Push the button on the condition indicator (Item 1) [B] and start the engine. If the red ring does not show, do not replace the filter element.

C

P–6449

Service the air cleaner as follows: Remove the dust cover wing nut (Item 2) [B].

Remove the dust cover (Item 1) [C].

2

Remove the wing nut (Item 2) [C] at the large air filter element.

1 P–6450

Remove the large filter element [D].

D

P–6451

–27–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

AIR CLEANER SERVICE (Cont’d)

A

NOTE: Make sure all sealing surfaces are free of dirt and debris.

Install the new filter element and tighten the wing nut.

Install the dust cover and tighten the wing nut.

Only replace the inner filter element (Item 1) [A] under the following conditions.

• Replace the inner filter element every third time the outer filter element is replaced.

1

• Replace the inner filter element when the red ring still shows in the condition indicator window after the outer filter element is replaced.

P–6452

NOTE: After replacing the primary (large) filter element, recheck the condition of the inner filter element by pushing the button on the condition indicator and start the engine. Run the engine at full throttle. If the red ring on the condition indicator shows, replace the inner filter element.

–28–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

FUEL SYSTEM

A

Fuel Specification Use only clean, high quality diesel fuel, Grade No. 1 or Grade No. 2.

2

The following is suggested blending guideline which should prevent fuel gelling problems.

Temp. F° (C°)

No. 2

No.1

+15o(9o) Down to –20o (–29o) Below –20o (29o)

100% 50% 0%

0% 50% 100%

1

P–2921

For local recommendations, the operator can contact his fuel supplier.

B

Stop and cool the engine before adding fuel, NO SMOKING! Failure to obey warnings can cause an explosion or fire.

W–2063–0887

Filling the Fuel Tank The fuel level in the tank is indicated by the fuel gauge (Item 1) [A] when the ignition switch is ‘‘ON’’.

NOTE: When the fuel level reaches the 2.5 gals. (9,3 L.) fuel level, the low fuel light (Item 2) [A] will come ‘‘ON’’ to alert the operator of this condition.

P–2920

C

Use the key to unlock the fuel fill door [B].

Turn the fuel cap to remove it [C].

Use a clean, approved safety container to add fuel to the tank.

Add fuel only in an area that has a free movement of air and no flames or sparks. NO SMOKING! After the tank is full, install and tighten the fuel cap. Close and lock the fuel door.

P–6453

Always clean up spilled fuel or oil. Keep heat, flames, sparks or lighted tobacco away from fuel and oil. Failure to use care around combustibles can cause explosion or fire which can result in injury or death.

W–2103–1285

–29–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

FUEL SYSTEM (Cont’d)

A

Fuel System Maintenance See the Service Schedule (Page 26) for the correct service intervals.

To remove water and sediment from the fuel tank, turn the upper structure until the fuel tank is centered between the rear tracks.

Open the drain valve (Item 1) [A] at the bottom of the fuel tank.

1

Drain contaminated fuel into a container.

P–3012

Fuel Filter See the Service Schedule (Page 26) for the service interval when to replace the fuel filter.

B

3

Loosen the drain (Item 1) [B] at the bottom of the filter element to drain any water from the fuel filter.

Tighten the drain when all the water has been removed.

2

Remove the filter element (Item 2) [B].

1

Clean the area around the filter housing. Put oil on the seal of the new filter element. Install the fuel filter and hand tighten.

4

Remove the air from the fuel filter (See Below).

Removing Air from the Fuel System

P–6454

After replacing the fuel filter or when the fuel tank has run out of fuel, the air must be removed from the fuel system before starting the engine.

C

Open the vent (Item 3) [B] on the fuel filter housing.

Operate the hand pump (priming bulb) (Item 4) [B] until the fuel flows from the vent with no air bubbles.

1

Tighten the vent plug.

Start the engine. It may be necessary to open the vent (Item 1) [C] at the fuel injection pump briefly until the engine runs smoothly.

P–6433

Always clean up spilled fuel or oil. Keep heat, flames, sparks or lighted tobacco away from fuel and oil. Failure to use care around combustibles can cause explosion or fire which can result in injury or death.

W–2103–1285

–30–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

ENGINE LUBRICATION SYSTEM Checking Engine Oil

A

Check the engine oil every day.

Stop the engine. Open the rear cover.

Remove the dipstick (Item 1) [A].

Keep the oil level between the marks on the dipstick.

Use a good quality motor oil that meets the correct API Service Classification (See Fuel, Coolant and Lubrication Chart, Page 60).

1 P–6455

Replacement of Oil and Filter

B

See the Service Schedule (Page 26) for the correct service interval.

1. Run the engine until it is at operating temperature.

Stop the engine.

2. Open the rear cover.

1

3. Remove the drain plug (Item 1) [B] from the oil pan.

Drain the oil into a container.

P–6456

C 4. Remove the oil filter (Item 1) [C], using a filter wrench.

1

5. Clean the filter housing surface. Put clean oil on the filter gasket. Install the new filter and hand tighten only.

6. Install and tighten the oil drain plug.

P–6455

D 1

7. Remove the oil fill cap (Item 1) [D]. Put in 7.5 qts.

(7,1 l.) of oil into the engine (See Fuel, Coolant and Lubricants Chart, Page 60).

8. Start the engine and let it run for several minutes.

Stop the engine. Check for leaks at the oil filter and the oil drain plug.

9. Check the oil level and add oil as needed if it is not at the ‘‘top’’ mark on the dipstick.

P–3539

–31–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

COOLING SYSTEM

A

Coolant Level

2

Check the cooling system every day to prevent overheating, loss of performance or engine damage.

When the engine is cool, the coolant level in the recovery tank (Item 1) [A] must be half full.

1

If the coolant level is low, add premixed coolant to the recovery tank.

NOTE: The coolant system is factory filled with propylene glycol. See information below for the correct mixture.

P–6458

B 1 Do not remove radiator cap when the engine is hot. You can be seriously burned.

W–2070–1285

2

Coolant Replacement Turn the upper structure so there is access to the engine and radiator from between the tracks. Stop the engine.

P–6459

When the engine is cool, loosen and remove the radiator cap (Item 2) [A].

Open the radiator drain valve (Item 1) [B]. Drain the coolant into a container.

Open the engine block drain valve (Item 2) [B] and drain the coolant into a container.

After all the coolant is removed, close both drain valves.

NOTE: Remove all coolant from the coolant recovery tank (Item 1) [A] also.

NOTE: The excavator is factory filled with propylene glycol coolant. DO NOT mix propylene glycol with ethylene glycol.

Propylene Glycol (Factory Installed) Add premixed coolant; 47% water and 53% propylene glycol to the recovery tank if the coolant level is low.

One gallon and one pint of propylene glycol mixed with one gallon of water is the correct mixture of coolant to provide a –34°F (–37°C) freeze protection.

Use a refractometer to check the condition of propylene glycol in your cooling system.

–32–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

ALTERNATOR BELT ADJUSTMENT To adjust the belt tension, use the following procedure:

A

Stop the engine. Open the engine cover.

The belt should deflect about 1/2 inch (13 mm) when pressed between the water pump pulley and crankshaft pulley with approximately 13 lbs. (58 N) pressure [A].

P–6460

If the tension is not correct, remove the seat and seat mount (see Service Manual):

B 2

Loosen the alternator mounting bolt (Item 1) [B].

Loosen the alternator adjustment bolt (Item 2) [B].

Move the alternator until the belt tension is correct.

Tighten the adjustment bolt and mounting bolt.

Replace the belt if it has stretched or there are cracks in the belt. Check the pulley grooves, make sure the belt is not in contact with the bottom of the grooves in the pulleys.

1 P–6461

ELECTRICAL RELAYS AND DIODES

C 2

The engine harness electrical relays (Item 1) [C] and the diodes (Item 2) [C] are located in the engine compartment to the right of the air cleaner.

The two (2) relays (Item 1) [C] control the starter and the glow plugs.

1

The two (2) diodes (Item 2) [C] are for alternator feedback protection and the glow plug during start function.

P–6449

–33–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

ELECTRICAL SYSTEM

A

The excavator has a 12 volt, negative ground electrical system.

Fuses The fuses are located in the lower part of the right hand control console [A].

1

Loosen the two knobs (Item 1) [A] and remove the access plate.

1. FUSE – 20 AMP: This fuse supplies power to the ignition switch [B].

2. FUSE – 10 AMP: This fuse supplies power to the dash panel and the hour meter [B].

P–2941

3. FUSE – 15 AMP: This fuse supplies power to the light switch [B].

B

4. FUSE – 15 AMP: This fuse supplies power to the horn and the heater (if equipped) [B].

Replace all fuses with the same type and capacity.

1

NOTE: Before replacing any fuse, find and fix the problem that caused the circuit overload.

Make sure the key switch is in the ‘‘OFF’’ position before replacing the fuse.

2 3

Service the Electrical System (and Battery)

4

Remove the right side cover [C], using the ignition key to unlock the cover.

P–2947

The battery cables must be clean and tight. Remove any acid or corrosion from the battery and cables using a sodium bicarbonate and water solution. Cover the battery terminals and cable ends with battery saver grease [D].

C

Check for broken or loose connections.

If the battery cables are removed for any reason, disconnect the negative (–) cable first and when installing the battery cables, make the last connection the negative (–) cable to the battery.

With factory equipped battery, no maintenance is needed as this is a maintenance free battery.

If the machine has a Melroe parts replacement battery installed, check the electrolyte level in the battery. (See Battery Manual P/N 6566047 for additional information.)

P–6462

If it is lower than 1/2’’ (13 mm) above the plates, add distilled water only.

D (+)

Batteries contain acid which burns eyes and skin on contact. Wear goggles and protective clothing to keep acid off body.

(–)

In case of acid contact, wash immediately with water for several minutes and get medical attention in case of eye contact.

P–6463

–34–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

ELECTRICAL SYSTEM (Cont’d)

A

Using A Booster Battery (Jump Starting)

1

1

If jump starting the excavator from a second machine: When jump starting the excavator from a battery installed in a second machine. Make sure that the second machine is NOT running while using the glow plugs. High voltage spikes from a running machine can burn out the glow plugs.

I–2060–0195

P–6464

B

If it is necessary to use a booster battery to start the engine. BE CAREFUL! Make sure the swing lock is in the engaged position.

The key switch must be in the ‘‘OFF’’ position.

The booster battery must be 12 volt.

Using the ignition key, unlock the two (2) side cover locks (Item 1) [A].

Tilt the top of the side cover out and lift up on the side cover to remove [B].

Connect the end of the first cable to the positive (+) terminal of the booster battery. Connect the other end of the same cable to the positive (+) terminal (Item 1) [C] of the machine battery.

Connect the end of the second cable to the negative (–) terminal of the booster battery. Connect the other end of the same cable to the frame (Item 2) [C].

NOTE:

Also see ‘‘Cold Temperature Procedure’’, Page 15.

Keep arcs, sparks, flames and lighted tobacco away from batteries. When ‘‘jumping’’ from a booster battery make final connection (negative) at engine frame.

Do not jump start or charge a frozen battery.

Warm battery to 60oF. (16oC.) before connecting or disconnecting cables to battery.

Battery gas can explode and cause serious injury.

W–2066–0490

P–6462

C 1

Starting

2

Start the engine. After the engine is running, remove the cable (Item 2) connected to the frame first. Disconnect the cable from the machine battery (Item 1) [C].

P–6465

Damage to the alternator can occur if:

• Engine is operated with battery cables disconnected.

• Battery cables are connected when using a

fast charger or when welding on the loader (Remove both cables from the battery.

• Extra battery cables (booster cables) are connected wrong from the battery.

I–2023–1285

–35–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

ELECTRICAL SYSTEM (Cont’d)

A

Removal and Installation of the Battery Remove the side cover (See Page 35).

(+)

Disconnect the negative (–) cable (Item 1) [A] first.

Disconnect the positive (+) cable (Item 2) [A].

2

(–)

1

P–6463

Remove the bolt (Item 1) [B] and remove the hold down clamp (Item 2) [B].

B

2 1 P–6466

Remove the battery from the compartment [C].

Always clean the terminals and the cable ends, even when installing a new battery.

C

Install the battery. Install the hold down clamp and tighten the bolt.

Connect the battery cables. Connect the negative (–) cable (Item 1) [A] last to prevent sparks at the terminal.

P–6467

Batteries contain acid which burns eyes and skin on contact. Wear goggles and protective clothing to keep acid off body.

D

In case of acid contact, wash immediately with water for several minutes and get medical attention in case of eye contact.

W–2065–1286

Electric Solenoid (Engine Stop) The electric solenoid shuts off fuel supply and stops the engine when the key is turned to the ‘‘OFF’’ position [D].

P–6468

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

HYDRAULIC SYSTEM Checking and Adding Fluid

A 1

To check and add hydraulic fluid to the reservoir, use the following procedure: 1. Put the machine on a flat level surface.

2. Retract the arm and bucket cylinders, put the bucket on the ground and raise the blade. Stop the engine.

3. Check the hydraulic fluid level, it must be visible in the sight gauge (Item 1) [A] located on the side of the hydraulic reservoir.

P–6469

4. If the fluid level is not correct, open the hydraulic tank access door [B].

B

5. Remove oil fill cap [B].

6. Check the condition of the fill strainer [C]. The screen must be installed in fill neck when adding oil.

7. Add the correct fluid to the reservoir until it is visible in the sight gauge (See Fuel, Coolant and Lubricants Chart, Page 60).

8. Install the reservoir cap and close and lock the access door.

P–6453

C

Return Line Filter Service See the Service Schedule (Page 26) for the correct service interval.

1. Open the right side cover (See Page 35).

2. Remove the filter cartridge (Item 1) [D].

3. Disassemble the cartridge and clean thoroughly.

4. Install the filter cartridge.

Replacement of the Hydraulic Filter

P–6470

See the Service Schedule (Page 26) for the correct service interval.

1. Open the right side cover (See Page 35).

D

2. Use a filter wrench and remove the filter element (Item 2) [D].

3. Clean the housing where the filter gasket makes contact.

2 1

4. Put clean hydraulic fluid on the gasket. Install the new filter element and hand tighten only.

5. Start the engine. Run the machine through the hydraulic functions. Stop the engine. Check the fluid level at the reservoir and add as needed. Check around the filter for leaks.

P–6471

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

HYDRAULIC SYSTEM (Cont’d) Hydraulic Reservoir

A

See the Service Schedule (Page 26) for the correct service interval.

1. Move the upper structure so there is clearance for the reservoir drain between the tracks.

2. Retract the arm and bucket cylinders, lower the bucket to the ground. Stop the engine.

3. Remove and replace the hydraulic filter(Page 37).

4. Remove the drain plug from the bottom of the reservoir [A].

P–3014

5. Drain the fluid into a container.

B

6. Install the drain plug.

7. Add approximately 10.5 gals. (40 L) of fluid to the reservoir (See Fuel, Coolant and Lubricants Chart, Page 60).

8. Run the machine through the hydraulic functions.

Stop the engine. Check the fluid level and add as needed.

1 P–6472

Always clean up spilled fuel or oil. Keep heat, flames, sparks or lighted tobacco away from fuel and oil. Failure to use care around combustibles can cause explosion or fire which can result in injury or death.

W–2103–1285

Diagnostic Couplers The diagnostic couplers are located on each hydraulic pump (Item 1) [B].

The couplers can be used to check circuit pressures (Refer to the Service Manual).

–38–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

SPARK ARRESTOR MUFFLER See the Service Schedule (Page 26) for the correct service interval.

A

1

Do not operate the excavator with a defective exhaust system.

This excavator is factory equipped with a U.S.D.A. Forestry Service approved spark arrestor muffler. It is necessary to do maintenance on this spark arrestor muffler to keep it in working condition. The spark arrestor muffler must be serviced by dumping the spark chamber every 100 hours of operation.

P–6483

B

If this machine is operated on flammable forest, brush or grass covered land, it must be equipped with a spark arrestor attached to the exhaust system and maintained in working order. Failure to do so will be in violation of California State Law, Section 4442 PRC.

1

Make reference to local laws and regulations for spark arrestor requirements.

I–2061–0195

P–6473

Stop the engine. Open the engine cover.

Remove the six (6) bolts (Item 1) [A] from the left side cover.

Remove the left side cover.

Remove the plug (Item 1) [B] from the bottom of the muffler.

When an engine is running in an enclosed area, fresh air must be added to avoid concentration of exhaust fumes. If the engine is stationary, vent the exhaust outside.

Exhaust fumes contain odorless, invisible gases which can kill without warning.

W–2050–1285

When the engine is running during service, the steering levers must be in neutral.

Failure to do so can cause injury or death.

Stop engine and allow the muffler to cool before cleaning the spark chamber. Wear safety glasses or goggles. Failure to obey can cause serious injury.

W–2011–1285

W–2203–0595

Start the engine and run for about ten (10) seconds while a second person, wearing safety glasses, holds a piece of wood over the outlet of the muffler. (The carbon deposits will be forced out of the muffler plug hole.)

Never use machine in atmosphere with explosive dust or gases or where exhaust can contact flammable material. Failure to obey warnings can cause injury or death.

W–2068–1285

Stop the engine. Install and tighten the plug.

Close the engine cover.

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

LUBRICATION OF THE HYDRAULIC EXCAVATOR

A

Lubricate the Hydraulic Excavator as specified in the Service Schedule (Page 26) for the best performance of the machine.

1

Record the operating hours each time you lubricate the Bobcat Hydraulic Excavator.

2

Always use a good quality lithium based multipurpose grease when lubricating the machine. Apply the lubricant until extra grease shows.

3

Lubricate the following locations on the Hydraulic Excavator EVERY 8–10 HOURS:

P–2908

Ref. Description (# of Fittings) 1. Blade Cylinder Rod End (1) [A].

B

6

2. Blade Pivots (2) [A].

3. Blade Cylinder Base End (1) [A].

4 4. Boom Swing Bracket Pivot (2) [B].

5. Boom Swing Bracket (1) [B].

6. Boom Base Pivot (1) [B].

5 P–6474

C

7. Boom Swing Bracket Top Pivot (1) [C].

7

8. Boom Swing Bracket Pivot (2) [C].

9. Boom Swing Cylinder Rod End (1) [C].

10. Boom Cylinder Base End (1) [C].

9 8 10

P–6475

D

11. Boom Cylinder Rod End (1) [D].

12

12. Arm Cylinder Base End (1) [D].

11 P–6476

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

LUBRICATION OF THE HYDRAULIC EXCAVATOR (Cont’d)

A

13

Ref. Description (# of Fittings) 13. Arm Cylinder Rod End (1) [A].

14

14. Arm Base Pivot (1) [A].

15. Bucket Cylinder Base End (1) [A].

15 P–6477

16. Bucket Cylinder Rod End (1) [B].

B

17

17. Bucket Link Pivots (2) [B].

18. Bucket Pivots (3) [B].

16 18

P–6478

19. 19.

Boom Swing Cylinder Base End (1) [C].

C

19 P–3011

Lubricate the following locations on the Hydraulic Excavator EVERY 50 HOURS:

D

Ref. Description (# of Fittings) 20. Swing Circle Ball Bearings (2) [D].

NOTE: Do not over grease the swing circle or damage to the seals could result. Install 4 to 5 pumps of grease from a grease gun into each of the two grease fittings. Rotate the upperstructure 90o and install 4 to 5 pumps of grease into each of the 2 grease fittings.

20

P–6479

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

LUBRICATION OF THE HYDRAULIC EXCAVATOR (Cont’d)

A

Lubricate the following locations on the Hydraulic Excavator EVERY 50 HOURS:

21

Ref. Description (# of fittings) 6. Swing Circle Pinion (1) [A].

NOTE: Install 4 pumps of grease from a grease gun into the grease fitting. Rotate the upper structure 180o and install 4 more pumps of grease into the grease fitting.

P–6475

FINAL DRIVE CASE

B

Checking Oil Level 1. Put the machine on a level surface with the plugs positioned as shown in figure [B].

2. Remove the top plug (Item 1) [B]. The oil level should be at the bottom edge of the plug hole.

1

3. Add gear lube 90W through the hole if the oil level is below the hole (See Fuel, Coolant and Lubricant Chart, Page 60).

2

4. Install and tighten the plug.

P–6290

5. Repeat the procedure for the other side.

Draining Final Drive Case See the Service Schedule (Page 26) for the correct service interval.

1. Put the machine on level surface with the plugs positioned as shown in figure [B].

2. Remove the bottom plug (Item 2) and top plug (Item 1) [B].

3. After all the gear lube is removed, install and tighten the bottom plug (Item 2) [B].

4. Add 0.55 quarts (0,5 L.) of gear lube to the top plug hole (or until the gear lube level is at the bottom edge of the plug hole). Install and tighten the plug.

5. Repeat the procedure for the other side.

–42–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

TRACK TENSION

A

NOTE: The wear of the pins and bushings on the undercarriage vary with the working conditions and the different types of soil conditions. It is necessary to inspect track tension to maintain the correct tension, see Service Schedule (Page 26) for the correct service interval.

Adjustment Raise one side of the machine using the boom and arm [A] (Approximately 4 inches).

Raise the blade fully and install jackstands under the blade and track frame [A] and [B]. Lower the boom until all machine weight is on the jackstands.

P–2935

B

Stop the engine.

AVOID INJURY Keep fingers and hands out of pinch points when checking track tension.

W–2142–0189

P–2939

Rubber Tracks

C

Measure the rubber track sag at either middle track roller [C]. Do Not get fingers into pinch points between the track and the track roller. Use a bolt or a dowel of the appropriate size to check the gap between the contact edge of the roller and the top edge of the track guide lug [C] and [D].

Rubber Track Gap . . . . . . . . . . . . . . . . . . . 9/16’’ (15 mm)

P–2936

D Track Frame Track 9/16” (15 mm)

Track Roller

Track

–43–

B–14067

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

TRACK TENSION (Cont’d)

A

Steel Tracks Measure the steel track sag at the center of the track, between the lower edge of the track frame and the top surface of the track [A].

4.25–4.75 inch (108–120 mm)

Steel Track Sag . . . . . . . . . 4.25’’ – 4.75’’ (108–120 mm).

CD–13227

To adjust the track tension, do the following:

B

Loosen the two (2) bolts from the cover [B]. Pivot the cover downwards.

P–6480

Add grease to the fitting (Item 1) [C] until the track tension is correct.

C

1

P–6481

Loosen the bleed fitting (Item 1) [D] to release tension from the track.

D

NOTE: Do not loosen the grease fitting (Item 2) [D].

1

Repeat the procedure for the other side.

NOTE: Left hand side track frame grease fitting and bleed fitting are shown in photo [D]. For right hand side track frame, the grease fitting (Item 2) [D] will be on the top and the bleed fitting (Item 1) [D] will be on the bottom.

2 P–6482

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

JOYSTICK CONTROL CHANGE Rotate the upperstructure so that it is 90° to the excavator tracks.

ISO PATTERN

A

Control Valve

1

Remove the center floor panel (see Service Manual).

R.H. Travel

NOTE: Remove the center floor panel to access the front of the control valve (hoses 1 and 2).

Boom Bucket Auxiliary

NOTE: Access the rear of the control valve from under the left side of the upperstructure (hoses 3 and 4).

ISO to STANDARD Control Pattern

Arm L.H. Travel

3

2

Mark the hoses as shown [A].

Remove hoses (Items 1 & 2) [A] and change their position on the control valve as shown in [B].

4

STANDARD PATTERN

B

Remove hoses (Items 3 & 4) [A] and change their position on the control valve as shown in [B].

B–13429

Control Valve

2

3 R.H. Travel

The Right Hand Joystick will now control the arm (arm out and arm in) and the bucket curl.

Boom

The Left Hand Joystick will not control the boom (boom up and boom down) and the upperstructure swing.

Bucket Auxiliary

DO NOT change any of the hoses on the top of the control valve to the work cylinders. Change only the hoses that connect the joysticks to the control valve spools.

Arm L.H. Travel

1

Clean the existing decals on the control consoles with soap and water and let dry.

4 B–13429

Install the STANDARD control pattern decals (P/N 6589843 for RH console and P/N 6589842 for LH console) on top of the existing control pattern decals.

STANDARD to ISO Control Pattern Mark the hoses as shown [B].

Remove hoses (Items 1 & 2) [B] and change their position on the control valve as shown in [A].

Remove hoses (Items 3 & 4) [B] and change their position on the control valve as shown in [A].

The Right Hand Joystick will now control the boom (boom up and boom down) and the bucket curl.

The Left Hand Joystick will now control the arm (arm out and arm in) and the upperstructure swing.

DO NOT change any of the hoses on the top of the control valve to the work cylinders. Change only the hoses that connect the joysticks to the control valve spools.

Clean the existing decals on the control consoles with soap and water and let dry.

Install the ISO control pattern decals (P/N 6589740 for RH console and P/N 6589741 for LH console) on top of the existing control pattern decals.

–45–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

HEATER AIR FILTER (With Cab Option Only)

A

331(S/N512912001–512912999)ExcavatorOperation&MaintenanceManual#6724471–PreventiveMaintenanceSection

See the Service Schedule (Page 26) for the correct service interval.

1

Remove the air filter (Item 1) [A] from the back of the heater.

Clean the filter element with water only, and dry with compressed air.

Install the filter element in the back of the heater.

P–6291

–46–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

MACHINE SIGN TRANSLATIONS WARNING (6588382) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 LIFT CHART (6589745) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 SERVICE SCHEDULE (6588716) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 WARNING (6588380) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 WARNING (6577754, 6589742 & 6643355) . . . . . . . . . . . . . . . . . . . . . . . . . . 53 WARNING (6643356 & 6587139) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

MACHINE SIGN TRANSLATIONS

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

ADVERTENCIA (SPANISH) EVITE UN ACCIDENTE QUE PUEDE SER MORTAL TRANSPORTE DE LA EXCAVADORA • Utilice rampas de acerp de superficie antideslizante y con rebordes.

• Asegure las rampas a la plataforma de vehiculo.

• Accione el freno de estacionamiento.

• Asegure las ruedas delanteras y traseras.

• No ponga las rampas con mas de 15° de inclinacion.

• El extremo superior de la rampa debe quedar al nivel de la plataforma.

• Active el pasador de bloqueo del giro antes de mover la máquina.

• Coloque calzos bajo las orugas y disponga cadenas de sujeción.

IZADO DE LA EXCAVADORA • Los dispotivos de izado deben tener la capacidad adecuada al peso de la máquina.

AVERTISSEMENT (FRENCH)

• Mantener el centro de gravedad y el equilibrio al proced-

EVITER LES BLESSURES OU LA MORT

er al izado.

• No girar el aguilón o el chasis superior. Embragar la palanca de giro.

• No izar nunca estando el operador en la máquina.

Vea la indicaciones en los manuales de Manejo y de Mantenimiento.

TRANSPORT DE LA MACHINE • Utiliser des rampes en ancier avec des rebords et une surface antidérapante.

• Attacher les rampes au plancher de la remorque.

• Enclencher le frein de stationnement.

• Caler les roues à l’avant et à l’arrière.

• L’inclinaison de la rampe ne doit pas dépasser 15°.

• L’extrémité de la rampe doit être dans l’alignement du plancher de la remorque.

• Enclencher l’axe de verrouillage d’orientation avant le chargement ou le transport.

• Attacher le pelle avec des chaïnes et bloquer les chenilles.

LEVAGE DE LA MACHINE • Les câbles de levage au les élingues en nylon dolvent être capables de supporter le polds de la machine.

• Maintenir le centre de gravité à l’endroit voulu et toujours garder l’équillibre pendant le levage.

• Ne jamais faire tourner la flèche ni la superstructure. Enclencher l’axe de verrouillage d’orientation.

• Ne jamais lever la pelle quand l’opérateur a’y trouve.

Se reporter au manuel de l’Opérateur et d’Entretien pour plus de renseignements.

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

ADVERTENCIA (SPANISH)

AVERTISSEMENT (FRENCH)

EVITE UN ACCIDENTE QUE PUEDE SER MORTAL

EVITER DES BLESSURES OU LA MORT

Lea detenidamente el Manuel de Manejo antes de utilizar la cargadora.

Lire et comprendre le Manuel de l’operateur avant d’utiliser la pelle.

Utilice el cinturón bien ajustado.

Accione los mandos únicamente ocupando el asiento de la máquina.

Serrer spogneusement la ceinture de sécurite.

N’actionner les commandes ou à partir du siége de l’operateur.

Trabaje siempre con una cabina de protección.

No altere los equipos. No utilice implementos que no estén aprobados por Melroe.

Toujours utiliser une cabine de protection.

Ne jamais modifier l’equipement ni ajouter des accessoires non aprouves par Melroe.

No circule por terreno escarpado o superficies inestables..

Eviter les endroits escarpes ou les surfaces instables.

No utilice nunca los mandos como agarraderos para subir a la máquina.

Ne jamais se servir des commandes pour monter dans la cabine.

Asegúrese de que no hay nadie dentro del radio de giro.

No circule ni gire con la cuchars desplegada.

S’assurer quil n’y a personne dans la zone de balayage maximal.

Ne jamais rouler ou tourner avec le godet allongé.

Enpendientes, circule con la parte más pesada hacia arriba.

En pente, maintenir le côte lourd vers le haut.

Para extender la pluma a un lado: • Lleve la carga apenas levantada.

• Gire lentamente.

• No sobrepase la capacida nominal véase la table de capacidades).

En cas de déport du côte des chenilles: • Tenir la charge vers le bas.

• Faire tourner lentement.

• Ne pas dépasser la capacité de charge – se reporter au tableau des charges de levage.

ANTES DE BAJAR DEL EQUIPO:

AVANT DE QUITTER LA PELLE:

1. Baje el implemento al suelo.

1. Abaisser l’equipement au sol.

2. Pare el motor.

2. Arréter le moteur.

–52–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

ADVERTENCIA (SPANISH) EVITE UN ACCIDENTE QUE PUEDE SER MORTAL No afloje el engrasador más de 1–1/2 vuelta.

ADVERTENCIA (SPANISH)

No afloje ninguna otra pieza. Está cargado con grasa a presión.

NO SE EXPONGA A SUFRIR LESIONES

AVERTISSEMENT (FRENCH)

• NO ABRA LA PUERTA CON EL MOTOR EN MARCHA, SOLO SI ES NECESARIO PARA EL MANTENMIENTO.

• NO SE ACERQUE AL VENTILADOR NI A OTRAS PIEZAS MOVILES.

EVITER DES BLESSURES OU LA MORT Ne pas deserrer le graisseur de plus de 1–1/2 tour.

AVERTISSEMENT (FRENCH)

Ne pas deserrer une pièce autre que le graisseur. La graisse se trouve sous haute pession.

ÉVITER LES BLESSURES • NE PAS OUVRIR LA PORTE D’ACCÉS AU MOTEUR QUAND IL TOURNE, SAUF POUR ENTRETIEN.

• SE TENIR À L’ÉCART DU VENTILATEUR ET DES ORGANES MOBILES.

ADVERTENCIA (SPANISH) EL CILINDRO CONTIENE GAS BAJO ALTA PRESION. EL ABNRIR EL CILINDRO PUEDE SOLTAR LA VARILLA Y CAUSAR HERIDAS O LA MUERTE.

AVERTISSEMENT (FRENCH) LES VERINS RENFERMENT UN GAZ SOUS PRESSION. NE JAMAIS OUVRIR UN VERIN CAR LA TIGE RISQUE DE S’ECHAPPER BRUTALEMENT ET DE CAUSER DES BLESSURES OU MEME LA MORT.

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

331(S/N512912001–512912999)ExcavatorOperation&MaintenanceManual#6724471–MachineSignTranslationsSection

ADVERTENCIA (SPANISH) • NO AFLOJE EL TAPON DE LLENADO SI EL MOTOR ESTA CALIENTE.

• SE EXPONE A SUFRIR UNA QUEMADURA GRAVE. AVERTISSEMENT (FRENCH) • NE PAS DESSERRER LE BOUCHON DE VIDANGE QUAND LE MOTEUR EST CHAUD.

• DANGER DE BRÛLURES GRAVES.

–54–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

SPECIFICATIONS BUCKET SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 FUEL, COOLANT AND LUBRICANT CHART . . . . . . . . . . . . . . . . . . . . . . . . . 60 HYDRAULIC EXCAVATOR SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . 57 Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Digging Force . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Drive System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Hydraulic Cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Lifting Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Machine Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Operation & Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Swing System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Track . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Undercarriage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 OIL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

SPECIFICATIONS

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

HYDRAULIC EXCAVATOR SPECIFICATIONS Machine Dimensions

• All dimensions are shown in inches. Respective metric dimensions are given in

millimeters enclosed by parentheses.

• Where applicable, specifications conform to SAE standards. Specifications are subject to change without notice.

Inches (mm) A

Max. digging depth

119.2 (3029)

B

Max. vertical wall depth

56.2 (1428)

C

Max. digging reach

195.4 (4963)

D

Max. digging reach at ground level 190.5 (4839)

E

Max. digging height

180.3 (4579)

F

Max. dumping height

124.4 (3160)

G

Max. Work Equip. Radius W/Boom 81.7 (2074) at max. height & arm retracted

H

Max. height of Min. swing radius

138.9 (3529)

I

Max. lift above ground (blade)

14.1 (358)

J

Max. drop below ground blade

11.0 (280)

–57–

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

HYDRAULIC EXCAVATOR SPECIFICATIONS (Cont’d) Lifting Capacity

OPERATIONS & PERFORMANCE

331

Weights Operating Weight (W/Canopy & Rubber Track) . . . . . . . .

(W/Canopy & Steel Track) . . . . . . . . . .

(W/Cab & Rubber Track) . . . . . . . . . . .

(W/Cab & Steel Track) . . . . . . . . . . . . .

7125 lbs. (3232 kg) 7283 lbs. (3304 kg) 7385 lbs. (3350 kg) 7543 lbs. (3422 kg)

Travel Speed Low Range . . . . . . . . . . . . . . . . . . . . . . .

High Range . . . . . . . . . . . . . . . . . . . . . .

1.24 MPH (2,0 km/hr.)

2.30 MPH (3,7 km/hr.)

Controls Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Function . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ENGINE Make . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Horsepower . . . . . . . . . . . . . . . . . . . . . . . .

Displacement . . . . . . . . . . . . . . . . . . . . . . .

Maximum Torque . . . . . . . . . . . . . . . . . . . .

Maximum Governed RPM – Full Load . .

No Load . .

Low Idle Speed . . . . . . . . . . . . . . . . . . . . .

Number of Cylinders . . . . . . . . . . . . . . . . .

Bore/Stroke . . . . . . . . . . . . . . . . . . . . . . . .

Cooling System . . . . . . . . . . . . . . . . . . . . .

Lubrication System . . . . . . . . . . . . . . . . . .

Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Starter . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Alternator . . . . . . . . . . . . . . . . . . . . . . . . . .

Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Two Hand Levers or Foot Pedals Two joystick levers control boom, bucket, arm and swing.

Separate lever controls blade.

Left foot pedal controls auxiliary hydraulics.

Right foot pedal controls boom swing.

Kubota V2203–B Diesel 40 HP (29.9 kW) @ 2400 RPM 134 cu. in. (2197 cu. cm.)

102.5 ft–lbs. (139 Nm) @ 1600 RPM 2400 RPM 2600 RPM 1150 RPM Four 3.42/3.64 (87/92,4) Liquid Pressure Cartridge Type – Full Flow 12 Volt, (2.7 Kw) Reduction Drive 12 volt, 50 Amp. 12 Volt, 500 Cold Crank Amps. at 0oF (–18oC) 75 min. reserve capacity at 25 Amps.

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HYDRAULIC EXCAVATOR SPECIFICATIONS (Cont’d) HYDRAULIC SYSTEM Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . .

System Relief Pressure . . . . . . . . . . . . . .

Control Valves . . . . . . . . . . . . . . . . . . . . . .

Engine driven, gear type Triple Section Gear Pumps 3 x 9.1 gal/min. (34,5 L/min.)

2500 PSI (17235 kPa) 6–spool,Parallel Type, Open Center 3–spool,Parallel Type, Open Center Two Axial Piston Orbit Motor 2088 PSI (14395 kPa) 363 PSI (2500 kPa)

Drive Motor . . . . . . . . . . . . . . . . . . . . . . . . .

Swing Motor . . . . . . . . . . . . . . . . . . . . . . . .

Swing Relief Setting . . . . . . . . . . . . . . . . .

Joystick Control Setting . . . . . . . . . . . . . .

Port Relief Valve (Arm Circuit) Base end . . . . . . . . . . . . . . . . . . . . . . . .

Rod end . . . . . . . . . . . . . . . . . . . . . . . . .

Port Relief Valve (Boom Circuit) Base end . . . . . . . . . . . . . . . . . . . . . . . .

Rod end . . . . . . . . . . . . . . . . . . . . . . . . .

Port Relief Valve (Bucket Circuit) Base end . . . . . . . . . . . . . . . . . . . . . . . .

Rod end . . . . . . . . . . . . . . . . . . . . . . . . .

.

SWING SYSTEM Swing Drive . . . . . . . . . . . . . . . . . . . . . . . .

Swing Circle . . . . . . . . . . . . . . . . . . . . . . . .

Swing Speed . . . . . . . . . . . . . . . . . . . . . . .

Boom Swing (Left) . . . . . . . . . . . . . . . . . .

(Right) . . . . . . . . . . . . . . . . .

CYLINDER CYCLE TIMES Boom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Arm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Bucket . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Boom Swing . . . . . . . . . . . . . . . . . . . . . . .

Blade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

HYDRAULIC CYLINDERS Boom (Cushion–Boom Up) . . . . . . . . . . .

Arm (Cushion–Retract & Extend) . . . . . .

Bucket . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Boom Swing (Cushion–Left & Right) . . .

Blade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DRIVE SYSTEM Final Drive . . . . . . . . . . . . . . . . . . . . . . . . .

Type of Reduction . . . . . . . . . . . . . . . . . . .

Maximum Drawbar Pull . . . . . . . . . . . . . .

Gradeability . . . . . . . . . . . . . . . . . . . . . . . .

UNDERCARRIAGE Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2950 PSI (20345 kPa) 2950 PSI (20345 kPa) 2950 PSI (20345 kPa) 3400 PSI (23448 kPa) NONE 3400 PSI (23448 kPa) Orbit Motor to a 5.77:1 Planetary Drive Single Row Shear Type Ball Bearings W/Internal Gears Built Into Swing Circle 9.5 RPM 50 degrees 90 degrees

Raise 5.0 sec.

Retract 4.8 sec.

Curl 4.7 sec.

Left 4.2 sec.

Raise 1.5 sec.

Bore

Rod Dia.

Stroke

3.25 (83) 3.00 (76) 3.25 (83) 3.00 (76) 3.50 (89)

1.75 (44) 1.75 (44) 2.00 (50) 1.50 (38) 1.75 (44)

25.31 (643) 23.62 (600) 19..69 (500) 20.67 (525) 4.92 (125)

Each Track is Independently Driven by Axial Piston Motor Two Stage Planetary Gear Reduction 7100 lbs. (3550 kg) 30 degrees Crawler–Tractor Design Undercarriage. Sealed Track Rollers with Box Section Track Roller Frame Grease Type Track Adjusters W/Shock Absorbing Recoil Spring

BRAKES Travel . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Swing . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TRACK Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Number of Shoes . . . . . . . . . . . . . . . . . . .

Number of Track Rollers . . . . . . . . . . . . .

Ground Pressure . . . . . . . . . . . . . . . . . . . .

Lower 6.8 sec.

Extend 3.2 sec.

Dump 3.0 sec.

Right 3.3 sec.

Lower 2.3 sec.

Hydraulic Lock in Motor Hydraulic Lock in Motor & Pin Lock Rubber (Standard) 12.6 (320) 4 4.63 PSI (31,9 kPa)

Steel (Optional) 12.6 (320) 41 4 4.73 PSI (32,6 kPa)

CAPACITIES Fuel Tank . . . . . . . . . . . . . . . . . . . . . . . . . .

Cooling System . . . . . . . . . . . . . . . . . . . . .

Engine Oil & Filter . . . . . . . . . . . . . . . . . . .

Hydraulic Reservoir . . . . . . . . . . . . . . . . . .

Hydraulic System . . . . . . . . . . . . . . . . . . .

Final Drive Case (Each) . . . . . . . . . . . . . .

14.4 Gals. (54,5 L) 4.0 Gals. (15,0 L) 7.5 Qts. (7,1 L) 10.5 Gals. (40 L) 17.6 Gals. (66,6 L) 0.55 Qts. (0,5 L)

DIGGING FORCE Arm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Bucket . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3600 lbs. (1633 kg) 5170 lbs. (2350 kg)

VIBRATION DATA Hand Arm Vibration . . . . . . . . . . . . . . . . . .

Whole Body Vibration . . . . . . . . . . . . . . . .

Less Than 2,5 m/sec2 RMS (tested per ISO 5349) Less Than 0,5 m/sec2 RMS (tested per ISO 7096)

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

FUEL, COOLANT AND LUBRICANTS Use the following charts for correct selection of Fuel, Coolant and Lubricants.

7.5 qts.

(7,1 L)

Coolant Mixture**

*If Bobcat fluid (P/N 6563328 is not available use Engine Oil SAE 10W–30/10W–40, Class SE. OIL SPECIFICATIONS When fuel sulphur content is less than 0.5% change the engine oil and filter as shown in the Service Schedule (Page 25).

Change engine oil and filter according to the following chart if fuel sulphur content is above 0.5%.

Fuel Sulphur Content 0.5 to 1.0% Above 1.0%

Change Interval Of Engine & Oil Filter 1/2 of Regular Interval 1/4 of Regular Interval

* * COOLANT MIXTURE Propylene Glycol (Factory Installed) Add premixed coolant 47% water and 53% propylene glycol to the recovery tank if the coolant level is low.

One gallon and one pint of propylene glycol mixed with one gallon of water is the correct mixture of coolant to provide a –34°F (–37°C) freeze protection.

Use a refractometer to check the condition of propylene glycol in your cooling system.

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

BUCKET SPECIFICATIONS

Bucket Size

Capacity SAE Heaped

Shipped Weight

12 in. (305 mm) 16 in. (406 mm) 20 in. (509 mm) 24 in. (609 mm) 30 in. (762 mm)

1.59 cu. ft. (0,043 cu. m.)

2.12 cu. ft. (0,060 cu. m.)

2.81 cu. ft. (0,080 cu. m.)

3.62 cu. ft. (0,103 cu. m.)

4.60 cu. ft. (0,130 cu. m.)

126.6 lbs. (57,5 kg) 144.0 lbs. (65,4 kg) 160.0 lbs. (73,0 kg) 175.6 lbs. (79,7 kg) 215.9 lbs. (98,0 kg)

Trapezoidal Bucket 12” x 36” (300 x 900 mm)

4.20 cu. ft. (0,119 cu. m.)

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200.0 lbs. (90,7 kg) approx.

331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

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331 (S/N 512912001 & Above) Excavator Operation & Maintenance Manual

WARRANTY EXCAVATOR The Melroe Company warrants to its authorized dealer and authorized excavator dealers of Melroe Equipment, Ltd., who in turn, warrants to the original buyer (owner) that each Bobcat Excavator will be free from proven defects in material and workmanship for 12 months after delivery to the owner.

During the warranty period, the authorized selling Melroe Excavator dealer shall repair or replace, at his option, without charge for parts and labor, any part of the Melroe Excavator product which fails because of defects in material and workmanship. The owner shall provide the authorized excavator dealer with prompt written notice of the defect and allow reasonable time for replacement or repair.

Melroe may, at its option, request failed parts to be returned to the factory. Travel time of mechanics and transportation of the Melroe product to the authorized excavator dealer for warranty work are the responsibility of the owner.

Warranty does not cover replacement of scheduled service items such as oil, filters, turn–up parts, and other high–wear items. The warranty does not cover damages resulting from abuse, accidents, alterations, air flow obstructions, or failure to maintain or use the Melroe attachment according to the instructions applicable to it.

THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES (EXCEPT THOSE OF TITLE), EXPRESSED OR IMPLIED, AND THERE ARE NO WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL THE AUTHORIZED SELLING DEALER OR MELROE BE LIABLE FOR DOWNTIME EXPENSES, LOSS OF MACHINE USE OTHER INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES.

6570375 (1–87) Revised (3–96)

Printed in U.S.A.