Safety Information
This safety alert symbol indicates important safety messages in this manual. When you see this symbol, carefully read the message that follows and be alert to the possibility of personal injury or property damage.
WARNING: BEFORE STARTING ENGINE: Study Operator and Service Manuals
• Study Engine Operator and Maintenance Manual
• Practice All Safety Precautions
• Make Pre-Operation Check
•
• Learn Controls Before Operating
WARNING: DO NOT use this machine for any other purpose than blasthole drilling. The Innity Series rotary blasthole drill is designed for blasthole drilling purposes only. Any other use could result in personal injury and/or property damage and will void the warranty.
CAUTION: Each person performing service work must be satised that they have adequate knowledge and training to perform the required tasks. A thorough understanding of hydraulic and pneumatic systems as well as electrical and mechanical knowledge and experience is required.
This manual is furnished with your Innity Series rotary blasthole drill to aid you in performing the necessary service work to maintain your drill in good operating condition
This manual contains repair and adjustment information for all major operating systems on the machine. In some cases such as hydraulic pumps and motors it is better to replace the unit with a new or rebuilt unit than to perform major repairs. Should further information be desired or should particular problems arise which are not covered sufciently in this manual, the matter should be referred to manufacturer.
The descriptions and specications contained in this manual were in effect at the time of printing. The right is reserved to make changes at any time without notice and without obligation.
It is YOUR responsibility to understand and follow manufacturer's instructions on machine operation and service, and to observe pertinent safety precautions, laws and regulations. Failure to read and understand this manual and all safety, capacity and instruction placards on the machine before operating the unit, constitutes a misuse of the machine. It is your responsibility to know the manufacturer's specic requirements, government regulations, required precautions and any work hazards which may exist. You must make these known to all personnel working with the equipment or in the area, so that all may take the necessary and required safety precautions. Keep all children, visitors, and untrained personnel away from the equipment. It is also your responsibility to operate your equipment with skill, good judgment, and caution. Following recognized safety procedures will help you avoid accidents. Failure to heed these instructions can result in property damage, serious injury or death.
Drill Model: _____________________________________________________________________
Drill Serial No. : _____________________________________________________________________
Date Delivered: _____________________________________________________________________
Dealer: _____________________________________________________________________
Customer: _____________________________________________________________________
SKF Introduction Int-3 Contents Safety Information BI620410
Use only genuine Terex Reedrill parts in the maintenance, rebuild, or repair, of Terex Reedrill machines. Terex Reedrill shall have no liability as to any unauthorized modification of machines or parts and shall have no obligation or liability as to any machines or parts which have been improperly handled, or which have not been operated, maintained, or repaired according to Reedrill's furnished manuals, or other written instructions, or which are operated with other than genuine Reedrill parts.
Effective Date: August, 2007. Product specifications and prices are subject to change without notice or obligation. The photographs and/or drawings in this document are for illustrative purposes only. Refer to the appropriate Operator’s Manual for instructions on the proper use of this equipment. Failure to follow the appropriate Operator’s Manual when using our equipment or to otherwise act irresponsibly may result in serious injury or death. The only warranty applicable to our equipment is the standard written warranty applicable to the particular product and sale and Terex makes no other warranty, express or implied. Products and services listed may be trademarks, service marks or trade-names of Terex Corporation and/or its subsidiaries in the USA and other countries. All rights are reserved. Terex® is a registered trademark of Terex Corporation in the USA and many other countries. Copyright (or ©) 2007 Terex Corporation.
Your cooperation in furnishing as much information as possible will assist us in filling your orders correctly and in the shortest possible time.
1. IDENTIFICATION OF THE MACHINE
Always furnish the Reedrill Model Number and Serial Number when ordering parts. This information is found on the machine nameplate.
2. PART NUMBER AND DESCRIPTION
In addition to the Serial Number, always give the part number and description of each part ordered. If there is any doubt as to the correct part number and description, furnish a dimensioned sketch or return the part to be replaced, transportation charges prepaid.
3. SHIPMENT
Unless otherwise instructed, all shipments will be made via road freight and charged on our invoice. Shipments cannot be made on open account until your credit has been approved by our Accounting Department.
MAILING ADDRESSFOR PARTS ORDER ENTRY SHIPPING ADDRESS Terex Reedrill WA Terex Reedrill WA Terex Reedrill WA P. O. Box 1006 Telephone (08) 9495 7700 Lot 21 Brant Rd Kelmscott WA, 6111 Fax (08) 9495 7750 Kelmscott WA, 6111 AUSTRALIAN BRANCHES Brisbane Newcastle Mackay 585 Curtain Ave East 139 Racecourse Rd 10-12 Corporate Dve Eagle Farm QLD 4009 Rutherford NSW 2320 Mackay QLD 4740 Ph. (07) 3632 4600 Ph. (02) 4932 0000 Ph. (07) 4953 5600 Fax. (07) 3216 3934 Fax (02) 4932 0733 Fax (07) 4952 5311 © TEREX REEDRILL 2007
Int-4 SKF Introduction Contents
Ordering
BI620410
Parts Ordering and Product Support
Parts
and Product Support
SKF Introduction Int-5 Contents Introduction....................................................................................Int-3 Safety Information ........................................................................................................................Int-3 Parts Ordering and Product Support ..........................................................................................Int-4 Table of Contents ..........................................................................................................................Int-5 General Locator ..........................................................................................................................Int-16 Section 1 - Safety..............................................................................1-1 Section 1 Contents .........................................................................................................................1-3 Safety ...............................................................................................................................................1-4 Personal Protective Equipment ..................................................................................................1-4 Noise ..........................................................................................................................................1-4 Electrical Contact .......................................................................................................................1-4 Overhead and Buried Utilities.....................................................................................................1-4 Contact with Electric Wires .........................................................................................................1-5 Contaminated Air ........................................................................................................................1-5 Machine Stability ........................................................................................................................1-6 Moving and Rotating Parts .........................................................................................................1-7 High Pressure Air or Fluid ..........................................................................................................1-7 Before Operation ........................................................................................................................1-7 During Operation ........................................................................................................................1-8 Maintenance .............................................................................................................................1-10 Safety Locator ...........................................................................................................................1-11 Section 2 - Operator's Cab / Controls .............................................2-1 Section 2 Contents .........................................................................................................................2-3 Graphic Symbol Legend ................................................................................................................2-4 Warning Decals ...............................................................................................................................2-8 Operators Controls and Indicators .............................................................................................2-10 Control Panels ..........................................................................................................................2-10 Right Hand Control Panel .............................................................................................................2-11 Instrument Panel and Circuit Breakers ......................................................................................2-12 Circuit Breakers ........................................................................................................................2-12 Light Switches ..........................................................................................................................2-13 Instrument Panel ......................................................................................................................2-13 System Pressure Guage Panel ....................................................................................................2-14 Left Hand Control Panel ...............................................................................................................2-16 Foot Control Pedals ......................................................................................................................2-22 Cab Foot Controls ....................................................................................................................2-22 Thread Grease Switch..............................................................................................................2-22 Pipe Safety Arm Override Switch .............................................................................................2-22 Air Conditioner ..............................................................................................................................2-23 T8 Series Split System Air Conditioning Manual ......................................................................2-23 BI620410
Int-6 SKF Introduction Contents Section 3 - Main Frame / Crawlers ..................................................3-1 Section 3 Contents .........................................................................................................................3-3 Main Frame Repair - General .........................................................................................................3-5 Main Frame Repair .....................................................................................................................3-5 Leveling Jacks ................................................................................................................................3-6 Leveling Jacks ............................................................................................................................3-6 Leveling Jack Cylinders ..............................................................................................................3-7 Mast Elevating Cylinders ...............................................................................................................3-8 Crawler Assembly ...........................................................................................................................3-9 Metric Bolt Torque Specifications ...............................................................................................3-10 Track Maintenance.........................................................................................................................3-11 Before Operating the Machine ..................................................................................................3-11 General Maintenance ................................................................................................................3-11 Track Tension Adjustment ...........................................................................................................3-12 Hydraulic Tensioner ..................................................................................................................3-13 Idler Unit ........................................................................................................................................3-14 General Description..................................................................................................................3-14 Removal and Disassembly .......................................................................................................3-16 Assembly and Installation.........................................................................................................3-18 Track Tension Unit ........................................................................................................................3-20 Installation ................................................................................................................................3-21 Track Rollers .................................................................................................................................3-22 General Description..................................................................................................................3-22 Removal and Disassembly .......................................................................................................3-24 Track Roller - Assembly............................................................................................................3-25 Track Roller - Test and Install ...................................................................................................3-26 Support Rollers .............................................................................................................................3-27 General Description..................................................................................................................3-27 Support Roller Assembly ..........................................................................................................3-28 Removal and Disassembly .......................................................................................................3-29 Track Chain - Separate .................................................................................................................3-32 Track Chain - Repair .....................................................................................................................3-33 Track Link - Repair & Replace..................................................................................................3-33 Track Link - Description ............................................................................................................3-34 Track Shoes Installation...............................................................................................................3-35 Track Link Position ...................................................................................................................3-35 Track Shoe - Mounting to Tracsk Chain ...................................................................................3-36 Track Shoe Bolt Torque (Direct Torque Method) .......................................................................3-37 Track Shoe Bolt Torque (Torque Turn Method) .........................................................................3-38 Track Chain and Shoe Installation ..............................................................................................3-39 Track Chain with Shoes............................................................................................................3-39 Track Chain & Shoe - Assembly & Installation .........................................................................3-39 Track and Support Rollers ...........................................................................................................3-41 General Description..................................................................................................................3-41 Track Roller - Removal & Disassembly ....................................................................................3-43 BI620410
SKF Introduction Int-7 Contents Track and Support Roller - Assembly .......................................................................................3-45 Track and Support Roller - Test and Install ..............................................................................3-46 Final Drive .....................................................................................................................................3-48 Final Drive - General Description .............................................................................................3-48 Final Drive Unit Removal .............................................................................................................3-49 Removal from Track Frame ......................................................................................................3-49 Final Drive Unit Installation .........................................................................................................3-50 Installation into Track Frame ....................................................................................................3-50 Final Drive Maintenance ...............................................................................................................3-51 Oil Check / Change ..................................................................................................................3-51 Final Drive Oil ................................................................................................................................3-52 Specifications ...........................................................................................................................3-52 Recommended Oil ....................................................................................................................3-52 Final Drive Assembly ....................................................................................................................3-54 Auxiliary Crane ............................................................................................................................3-113 Hydraulic Crane (Auxiliary Crane) ...........................................................................................3-113 Load Lift Capacities .................................................................................................................3-113 Maintenance ............................................................................................................................3-114 Section 4 - Engine / Drive Train / Compressor...............................4-1 Section 4 Contents .........................................................................................................................4-3 Power Group Locator .....................................................................................................................4-6 Cummins Engine ............................................................................................................................4-7 Engine Fuel System ...................................................................................................................4-8 Construction ...............................................................................................................................4-9 Combo Fuel Filter Head & Pump Manifold ...............................................................................4-10 FS1006 Fuel Filter with Water Separator .................................................................................4-10 Fuel Manifold with Integrated FSO Valve ..................................................................................4-11 Fuel Connections ......................................................................................................................4-11 Pre Filters .................................................................................................................................4-12 Wiring with EFS Power Relay ..................................................................................................4-12 Pressure and Temperature Sensors .........................................................................................4-12 Operation ..................................................................................................................................4-13 QST30 Electric Fuel Supply System ........................................................................................4-14 Oil Reserve Systems ................................................................................................................4-16 Engine Oil Reserve System (Basic Circuit) ..............................................................................4-16 LED Monitor Readings .............................................................................................................4-17 Adjustment of Running Oil Level ..............................................................................................4-17 Oil Reserve Basic Circuit ..........................................................................................................4-18 Oil Pressure Switch ..................................................................................................................4-18 Oil Reserve System ..................................................................................................................4-18 Troubleshooting ........................................................................................................................4-19 Maintenance .............................................................................................................................4-19 Engine and Compressor Air Cleaner ..........................................................................................4-20 Engine and Compressor Air Cleaner Service ...........................................................................4-21 Compressor Assembly .................................................................................................................4-24 BI620410
Int-8 SKF Introduction Contents Flexible Drive Coupling ................................................................................................................4-25 Flexible Drive Coupling Service ...............................................................................................4-25 Pump Drive ....................................................................................................................................4-27 Pump Drive Assembly - Removal and Replacement................................................................4-27 Pump Drive Gearbox ....................................................................................................................4-28 Pump Drive Gearbox - Repair ..................................................................................................4-28 Hydraulic Pumps ..........................................................................................................................4-30 Hydraulic Pump Identification ...................................................................................................4-30 Hydraulic Pump Removal and Replacement............................................................................4-31 Compressor Service Procedures ................................................................................................4-32 Compressor Installation............................................................................................................4-32 Compressor Drive Coupling - Removal and Replacement.......................................................4-33 Taper-Loc Bushing Installation .................................................................................................4-35 Compressor Shaft Seal ................................................................................................................4-36 High Pressure Compressosr .......................................................................................................4-39 Safety .......................................................................................................................................4-39 Description ...............................................................................................................................4-42 Compressed Air Functions .......................................................................................................4-42 Compressor Oil Circuit ................................................................................................................4-46 Compressor Condensation Table ...............................................................................................4-49 Compressor Air Circuit ................................................................................................................4-50 Legend .....................................................................................................................................4-51 Compressor Functional Description ...........................................................................................4-65 Compressor Operation .................................................................................................................4-67 Operation ..................................................................................................................................4-67 Compressor Maintenance ............................................................................................................4-70 General Maintenance ...............................................................................................................4-70 Interstage Tube ........................................................................................................................4-72 Discharge Check Valve ............................................................................................................4-73 Separator Elements..................................................................................................................4-74 Separator Elements - Remove & Replace ...............................................................................4-75 Scavenge Line..........................................................................................................................4-76 Compressor Discharge Temperature Gauge, Switch and Sender ...........................................4-77 Minimum Pressure Valve ..........................................................................................................4-78 Minimum Pressure / Check Valve Maintenance .......................................................................4-78 Thermal Bypass Valve ..............................................................................................................4-79 Thermal Bypass Valve Maintenance ........................................................................................4-80 Oil Stop Valve ...........................................................................................................................4-81 Compressor Fluid Filter ............................................................................................................4-83 Changing Filter Elements .........................................................................................................4-84 Inlet Valve .................................................................................................................................4-85 Relieving Regulators ................................................................................................................4-87 System Blowdown Valve ..........................................................................................................4-92 Running Blowdown Valve .........................................................................................................4-93 Running Blowdown Maintenance .............................................................................................4-94 Moisture Separator Maintenance .............................................................................................4-95 BI620410
SKF Introduction Int-9 Contents Auxiliary Regulators .................................................................................................................4-96 Auxiliary Regulator Maintenance..............................................................................................4-98 Troubleshooting ......................................................................................................................4-100 Compressor Oil Cooler Assembly .............................................................................................4-103 Hydraulic Oil / Radiator Cooler Assembly ................................................................................4-104 Coolers Maintenance ..................................................................................................................4-105 Compressor Oil / Hydraulic Oil Cooler Service Manual ..........................................................4-106 Radiator Cooler Service Manual .................................................................................................4-113
5 - Dust Control System .....................................................5-1 Section 5 Contents .........................................................................................................................5-3 Dust Control System ......................................................................................................................5-4 Dust Control Systems .................................................................................................................5-4 Water Injection ................................................................................................................................5-5 Water Tanks................................................................................................................................5-5 Water Tank Top up Soleniod Valve .............................................................................................5-6 Water Injection Relief Valve........................................................................................................5-8 Water Injection Control ...............................................................................................................5-9 Water Injection Basic Circuit......................................................................................................5-11 Water Pump ...................................................................................................................................5-12 Pump Specifications .................................................................................................................5-12 Servicing Instructions ...............................................................................................................5-12 Parts List ..................................................................................................................................5-13 Replacing Piston Cup Seals .....................................................................................................5-14 Replacing Suction and Discharge Valves .................................................................................5-15 Replacing Power End Bearings................................................................................................5-16 Servicing the Wrist Pin Bearings ..............................................................................................5-17 Fastener Torque Requirements ................................................................................................5-17 Recommended Lubricants .......................................................................................................5-18 Water Pump Motor Repair ........................................................................................................5-18 Water Injection Hydraulic Control Valve Repair........................................................................5-18 Water Pump Drive Coupling .....................................................................................................5-18 Level and Flow Transducer ......................................................................................................5-18
Section
Rack....................................6-1 Section 6 Contents .........................................................................................................................6-3 Mast Weldment................................................................................................................................6-5 Mast Repair ................................................................................................................................6-5 Mast Assembly ................................................................................................................................6-6 Mast Assembly ...........................................................................................................................6-6 Mast Pivot Caps .........................................................................................................................6-7 Mast Elevate Cylinders ...............................................................................................................6-7 Angle Drilling ..............................................................................................................................6-8 Feed Cylinders ................................................................................................................................6-9 SKF 12 Feed System .................................................................................................................6-9 Feed Cylinder - Removal ..........................................................................................................6-10 BI620410
Section 6 - Mast / Rotary Drive / Pipe
Int-10 SKF Introduction Contents Feed Cylinder Assembly............................................................................................................6-11 Feed CylinderRepair ................................................................................................................6-12 Feed Cylinder Installation .........................................................................................................6-12 Hoist / Pulldown Cable Assembly ...............................................................................................6-13 Hoist / Pulldown Cable Adjustment ............................................................................................6-14 Auto Tensioning - Operating Principle ......................................................................................6-14 Auto Tensioning - Cable Removal, Adjustment and Installation ...............................................6-14 Rope Tensioning Circuit ...........................................................................................................6-16 Rotary Drive Alignment ................................................................................................................6-19 Alignment Procedure ................................................................................................................6-19 Rotary Drive Assembly .................................................................................................................6-20 Rotary Drive - Removal from Mast ...........................................................................................6-21 Rotary Drive - Installation .........................................................................................................6-21 Rotary Drive Gearbox ...................................................................................................................6-22 Air Swivel (Dual Seal Style) ......................................................................................................6-24 Air Swivel Service .....................................................................................................................6-24 Rotary Drive Motor .......................................................................................................................6-25 Repair .......................................................................................................................................6-25 Rotary Drive Rebuild Manual .......................................................................................................6-26 Winch Assembly ...........................................................................................................................6-66 Precautions on the use of Winches ..........................................................................................6-66 Wedge Socket ..........................................................................................................................6-68 Grooved Drums ........................................................................................................................6-69 Plain (Smooth) Drums ..............................................................................................................6-69 Drums - Multiple Layers ...........................................................................................................6-69 Winch Assembly Service ..........................................................................................................6-70 BG8A and BG8B Hydraulic Winch Service Manual..................................................................6-71 H.O.B.O. Wrench .........................................................................................................................6-102 Breakout System - HOBO ......................................................................................................6-103 Pipe Safety Arm......................................................................................................................6-103 Deck Wrench ...............................................................................................................................6-104 Pipe Positioner ............................................................................................................................6-105 Carousel Pipe Rack ....................................................................................................................6-106 If Pipe Rack does not Rotate..................................................................................................6-106 Chain Drive - Adjust / Replace ...............................................................................................6-106 Pipe Rack Bearings - Replace ...............................................................................................6-107 Carousel Top Tube Bearing - Replace ...................................................................................6-108 Carousel Lower Bearing - Replace .........................................................................................6-110 Carousel Pivot Support Upper Bearing - Replace ...................................................................6-112 Carousel Pivot Support Lower Bearing - Replace ...................................................................6-114 Mid Point Carousel Pivot Support ...........................................................................................6-115 Carousel Rotate Motor ............................................................................................................6-115 BI620410
Section 7 - Hydraulic Systems
SKF Introduction Int-11 Contents
........................................................7-1 Hydraulic Symbols .........................................................................................................................7-5 Hydraulic Tank ................................................................................................................................7-7 Pressure Setting Sequence ...........................................................................................................7-9 Pressure Setting Sequence........................................................................................................7-9 Main Return and Case Drain Filter ..............................................................................................7-10 Routine Maintenance ................................................................................................................7-11 Changing Filter Elements ..........................................................................................................7-11 Main Hydraulic Pump ...................................................................................................................7-12 Hydraulic Pump Identification - SKF12.....................................................................................7-12 Hydraulic Piston Pumps Removal and Replacement ...............................................................7-13 Hydraulic Piston Pumps Adjustment ........................................................................................7-13 Right Track / Pulldown, Left Track / Rotation Pumps ...............................................................7-14 Technical Data ..........................................................................................................................7-14 AA4VG EP Controller ...............................................................................................................7-17 EP (24VDC) Control .................................................................................................................7-19 Main Pump Adjustments...........................................................................................................7-24 Hydraulic Centering ..................................................................................................................7-25 Set Charge Pressure 450psi ....................................................................................................7-27 Set Pressure Override 5000psi ................................................................................................7-27 Hydraulic Piston Pumps - Maintenance .....................................................................................7-29 Hydraulic Piston Pumps - Troubleshooting ...............................................................................7-31 Charge Circuit ...............................................................................................................................7-35 Double Gear Pump - Right Charge and Water Injection ..........................................................7-35 Routine Maintenance ...............................................................................................................7-38 Changing Filter Elements .........................................................................................................7-38 Loop Filters ...................................................................................................................................7-39 Loop Filters ...............................................................................................................................7-39 Routine Maintenance ...............................................................................................................7-42 Changing Filter Elements .........................................................................................................7-42 Diverter Valve ................................................................................................................................7-43 Operation ..................................................................................................................................7-43 Diverter Valve ...........................................................................................................................7-43 Tram Circuit ...................................................................................................................................7-44 Hoist / Pulldown Circuit................................................................................................................7-46 Basic Pulldown Circuit ..............................................................................................................7-46 Hoist / Pulldown Circuit ............................................................................................................7-47 Rope Tensioning Circuit ..............................................................................................................7-48 Rotation Circuit .............................................................................................................................7-50 Rotation Circuit .........................................................................................................................7-50 Rotary Drive Gearbox Motor ........................................................................................................7-52 Rotation Motor ..........................................................................................................................7-56 Fan and Auxiliary Pump Circuit ...................................................................................................7-66 Fan and Auxiliary Functions Pump ...........................................................................................7-68 Hydraulic Pumps ..........................................................................................................................7-69 BI620410
Int-12 SKF Introduction Contents Hydraulic Piston Pumps - Removal and Replacement.............................................................7-69 Model A11VLO Hydraulic Piston Pumps - Repair ....................................................................7-69 Repair Instructions ...................................................................................................................7-70 New or Rebuilt Hydraulic Pump - Start Up .................................................................................7-71 Start Up Procedure...................................................................................................................7-71 Auxiliary Functions / Fan Circuit .................................................................................................7-73 Operation ..................................................................................................................................7-74 Cooler Fan Circuit .........................................................................................................................7-80 Cooler Fan Motor ..........................................................................................................................7-82 Jack and Mast Elevate Circuit .....................................................................................................7-86 4 Bank Valve ............................................................................................................................7-86 Counterbalance Valve Adjustment ..............................................................................................7-88 Counterbalance Valve Adjustments ..........................................................................................7-88 Mast Elevating Cylinders .............................................................................................................7-89 Mast Elevating Cylinders Counterbalance Valves ....................................................................7-89 Leveling Jack Cylinders ...............................................................................................................7-90 Jack Counterbalance Valves ....................................................................................................7-90 Auxiliary Functions / 6 Bank Valve .............................................................................................7-91 Auxiliary Funstions / 9 Bank Valve .............................................................................................7-93 Hydraulic Operated Breakout Wrench (HOBO) ..........................................................................7-94 Setting of Sequence Valves .....................................................................................................7-94 Carousel Rotate Motor .................................................................................................................7-95 Repair Information ....................................................................................................................7-95 Pilot Control Manifold.................................................................................................................7-102 Hydraulic Gear Pump ..................................................................................................................7-117 Hydraulic Gear Pumps - Removal and Replacement..............................................................7-117 Hydraulic Gear Pump - Repair ................................................................................................7-117 Hydraulic Gear Pumps - Shaft Seal Removal and Replacement ............................................7-118 Dust Collector / Water Injection Circuit ....................................................................................7-120 Pressure Adjustment ..............................................................................................................7-120 Water Injection / Foam Injection Valve ...................................................................................7-122 Water Injection / Foam Injection Valve .....................................................................................7-123 Introduciton.............................................................................................................................7-123 Valve Stack Assembly ............................................................................................................7-124 Segment Alterations ...............................................................................................................7-125 Pulsar Solenoid Removal and Plug ........................................................................................7-127 Recommended Test Stand .....................................................................................................7-128 Final Stack Adjustment ...........................................................................................................7-131 Assembly Drawing - VBL Bypass Inlet Segment Parts List ....................................................7-137 Assembly Drawing - VPL Work Segment Parts List ...............................................................7-139 Air Conditioner Compressor Drive Circuit ...............................................................................7-141 Hydraulic Cylinder Repair ..........................................................................................................7-142 BI620410
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