John Deere 670B, 672B, 770B, 770BH, 772B, 772BH HFWD/Motor Grader Technical Service Manual TM1453

670B, 672B 770B, 770BH 772B, 772BH Motor Graders Repair

REPAIR TECHNICAL MANUAL Graders models 670B; HFWD models 672B, 770BH, 772BH TM1453 22 FEB 05 (ENGLISH)

For complete service information also see: 670B, 672B 770B, 770BH 772B, 772BH Motor Graders Diagnostic

TM1452

Series 300, 3029, 4039, 4045, 6059 and 6068 Diesel Engines

CTM8

Alternators and Starting Motors

CTM77

Radial Piston Pumps

CTM7

Series 400, 6076 Diesel Engines

CTM42

Series 300 - 3179,4239,6359,4276,6414 Diesel Engines

CTM4

Series 400 6466 Diesel Engines

CTM1

John Deere Construction and Forestry Pinted by Belgreen

tm1453-REPAIR TECHNICAL MANUAL

(g) by Belgreen v2.5

Table of contents FOREWORD Section I - GENERAL INFORMATION Group I - Safety Group II - General Specifications Group III - Torque Values Group IV - Fuels And Lubrication Section 01 - WHEELS Group 0110 - Powered Wheels And Fastenings Section 02 - AXLES AND SUSPENSION SYSTEMS Group 0230 - Non-Powered Wheel Axles Group 0250 - Axle Shafts, Bearings, And Reduction Gears Group 0260 - Hydraulic System Section 03 - TRANSMISSION Group 0300 - Removal And Installation Group 0315 - Controls Linkage Group 0350 - Gears, Shafts, Bearings, And Power Shift Clutch Group 0360 - Hydraulic System Section 04 - ENGINE Group 0400 - Removal And Installation Section 05 - ENGINE AUXILIARY SYSTEM Group 0505 - Cold Weather Starting Aids Group 0510 - Cooling System Group 0515 - Speed Controls Group 0520 - Intake System Group 0560 - External Fuel Supply Systems Section 07 - DAMPENER DRIVE Group 0752 - Elements Section 08 - TRANSFER DRIVE Group 0800 - Removal And Installation Group 0851 - Gears, Shafts, And Bearings Section 09 - STEERING SYSTEM Group 0920 - Power Steering Group 0960 - Hydraulic System Section 10 - SERVICE BRAKES Group 1011 - Active Elements Group 1015 - Controls Linkage Group 1060 - Hydraulic System Section 11 - PARK BRAKE Group 1111 - Active Elements Group 1115 - Controls Linkage Section 16 - ELECTRICAL SYSTEM Group 1671 - Batteries, Support And Cables Group 1672 - Alternator, Regulator And Charging System Wiring Group 1673 - Lighting System Group 1674 - Wiring Harness And Switches Group 1675 - System Controls Group 1677 - Motors And Actuators Section 17 - FRAME, CHASSIS OR SUPPORTING STRUCTURE Group 1740 - Frame Installation Section 18 - OPERATOR’S STATION Group 1800 - Removal And Installation Group 1810 - Operator Enclosure <- Go to Global Table of contents

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Group 1821 - Seat And Seat Belt Group 1830 - Heating And Air Conditioning Section 21 - MAIN HYDRAULIC SYSTEM Group 2160 - Hydraulic System Section 34 - GRADING DEVICE Group 3415 - Controls Linkage Group 3440 - Frames Group 3450 - Circle Gearbox Group 3460 - Hydraulic System Section 42 - GROUND CONDITIONING TOOL Group 4240 - Frames Group 4260 - Hydraulic System Section 99 - DEALER FABRICATED TOOLS Group 9900 - Dealer Fabricated Tools

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tm1453-REPAIR TECHNICAL MANUAL

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tm1453-REPAIR TECHNICAL MANUAL

GENERAL INFORMATION

(g) by Belgreen v2.0

Foreword This manual is written for an experienced technician. Essential tools required in performing certain service work are identified in this manual and are recommended for use.

Live with safety: Read the safety messages in the introduction of this manual and the cautions presented throughout the text of the manual.

This is the safety-alert symbol. When you see this symbol on the machine or in this manual, be alert to the potential for personal injury.

Technical manuals are divided in two parts: repair and operation and tests. Repair sections tell how to repair the components.

Operation and tests sections help you identify the majority of routine failures quickly.

Information is organized in groups for the various components requiring service instruction. At the beginning of each group are summary listings of all applicable essential tools, service equipment and tools, other materials needed to do the job, service parts kits, specifications, wear tolerances, and torque values.

Technical Manuals are concise guides for specific machines. They are on-the-job guides containing only the vital information needed for diagnosis, analysis, testing, and repair.

Fundamental service information is available from other sources covering basic theory of operation, fundamentals of troubleshooting, general maintenance, and basic type of failures and their causes.

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Section I page 1

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Section I - GENERAL INFORMATION Table of contents Group I - Safety ........................................................................................................................................ 1 Handle Fluids Safely-Avoid Fires ........................................................................................................... 1 Prevent Battery Explosions ................................................................................................................... 1 Prepare for Emergencies ...................................................................................................................... 1 Prevent Acid Burns ............................................................................................................................... 3 Handle Chemical Products Safely ......................................................................................................... 3 Avoid High-Pressure Fluids ................................................................................................................... 4 Park Machine Safely ............................................................................................................................. 4 Support Machine Properly .................................................................................................................... 5 Wear Protective Clothing ...................................................................................................................... 6 Work in Clean Area ............................................................................................................................... 6 Service Machines Safely ....................................................................................................................... 6 Work In Ventilated Area ........................................................................................................................ 7 Illuminate Work Area Safely ................................................................................................................. 7 Replace Safety Signs ............................................................................................................................ 8 Use Proper Lifting Equipment ............................................................................................................... 8 Remove Paint Before Welding or Heating ............................................................................................. 8 Avoid Heating Near Pressurized Fluid Lines ........................................................................................ 10 Keep ROPS Installed Properly ............................................................................................................. 10 Service Tires Safely ............................................................................................................................ 11 Avoid Harmful Asbestos Dust ............................................................................................................. 11 Practice Safe Maintenance ................................................................................................................. 13 Use Proper Tools ................................................................................................................................. 13 Dispose of Waste Properly .................................................................................................................. 14 Live With Safety ................................................................................................................................. 14 Group II - General Specifications ......................................................................................................... 16 670B And 672B Specifications ............................................................................................................ 16 770B, 770BH, And 772BH Specifications ............................................................................................ 18 Group III - Torque Values ...................................................................................................................... 20 Hardware Torque Specifications ......................................................................................................... 20 Metric Bolt and Cap Screw Torque Values .......................................................................................... 21 Additional Metric Cap Screw Torque Values ....................................................................................... 22 Unified Inch Bolt and Cap Screw Torque Values ................................................................................. 24 Check Oil Lines And Fittings ............................................................................................................... 24 Service Recommendations for O-Ring Boss Fittings ........................................................................... 26 Service Recommendations for Flat Face O-Ring Seal Fittings ............................................................ 28 Service Recommendations for Metric Series Four Bolt Flange Fitting ................................................. 29 Service Recommendations For Inch Series Four Bolt Flange Fittings ................................................. 30 Group IV - Fuels And Lubrication ........................................................................................................ 31 Fuel Specifications .............................................................................................................................. 31 Low Sulfur Diesel Fuel Conditioner ..................................................................................................... 31 Storing Fuel ........................................................................................................................................ 31 Do Not Use Galvanized Containers ..................................................................................................... 31 Fuel Tank ............................................................................................................................................ 31 Circle Drive Gearbox Oil ..................................................................................................................... 32 Transmission, Hydraulic System, Tandem Drive, And Wheel Motor Oil .............................................. 32 Circle Drive Gearbox Oil ..................................................................................................................... 33 Grease ................................................................................................................................................ 33 Alternative and Synthetic Lubricants .................................................................................................. 34 Lubricant Storage ............................................................................................................................... 34 <- Go to Global Table of contents

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Mixing of Lubricants ........................................................................................................................... 34 Diesel Engine Coolant ......................................................................................................................... 34

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tm1453-REPAIR TECHNICAL MANUAL

Section I - GENERAL INFORMATION

Group I: Safety

Group I - Safety Handle Fluids Safely-Avoid Fires

Avoid Fires When you work around fuel, do not smoke or work near heaters or other fire hazards.

Store flammable fluids away from fire hazards. Do not incinerate or puncture pressurized containers.

Make sure machine is clean of trash, grease, and debris.

Do not store oily rags; they can ignite and burn spontaneously.

Prevent Battery Explosions

Battery Explosions Keep sparks, lighted matches, and open flame away from the top of battery. Battery gas can explode.

Never check battery charge by placing a metal object across the posts. Use a volt-meter or hydrometer.

Do not charge a frozen battery; it may explode. Warm battery to 16°C (60°F).

Prepare for Emergencies

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Section I page 1

tm1453-REPAIR TECHNICAL MANUAL

Section I - GENERAL INFORMATION

Group I: Safety

First Aid Kit Be prepared if a fire starts.

Keep a first aid kit and fire extinguisher handy.

Keep emergency numbers for doctors, ambulance service, hospital, and fire department near your telephone.

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Section I page 2

tm1453-REPAIR TECHNICAL MANUAL

Section I - GENERAL INFORMATION

Group I: Safety

Prevent Acid Burns

Acid Burns Sulfuric acid in battery electrolyte is poisonous. It is strong enough to burn skin, eat holes in clothing, and cause blindness if splashed into eyes.

Avoid the hazard by: 1. Filling batteries in a well-ventilated area.

2. Wearing eye protection and rubber gloves.

3. Avoiding breathing fumes when electrolyte is added.

4. Avoiding spilling or dripping electrolyte.

5. Use proper jump start procedure.

If you spill acid on yourself: 1. Flush your skin with water.

2. Apply baking soda or lime to help neutralize the acid.

3. Flush your eyes with water for 15-30 minutes. Get medical attention immediately.

If acid is swallowed: 1. Do not induce vomiting.

2. Drink large amounts of water or milk, but do not exceed 2 L (2 quarts).

3. Get medical attention immediately.

Handle Chemical Products Safely

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Section I page 3

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