caterpillar 951b | 951c traxcavator service manual
TRANSCRIPT
CT-S-951B TRAX
CCaatteerr ppii ll llaarrService Manual
951B TraxcavatorS/n 79H, 32F, 69H & 86J
Volume 1 of 2
THIS IS A MANUAL PRODUCED BY JENSALES INC. WITHOUT THE AUTHORIZATION OF CATERPILLAR OR IT’S SUCCESSORS. CATERPILLAR AND IT’S SUCCESSORSARE NOT RESPONSIBLE FOR THE QUALITY OR ACCURACY OF THIS MANUAL.
TRADE MARKS AND TRADE NAMES CONTAINED AND USED HEREIN ARE THOSE OF OTHERS, AND ARE USED HERE IN A DESCRIPTIVE SENSE TO REFER TO THE PRODUCTS OF OTHERS.
Serv
ice
Man
ual
SIN 79H. 32F. 69H. 86J
< ,...-.-:-:::..\
( } ... .. ..../
4.75 11 BORE., 6.0 11 . STROKE
TWO.VALVE
·4& 6 CYLINDER ENGINES
(
4.75" BORE ENGINES TESTING AND ADJUSTING
Table of Contents
FUEL SYSTEM TESTING AND ADJUSTING
Checking Fuel Injection Pump Lifter Washer and Pump Plunger ....................... .
Checking Fuel Injection Valve. . . . . . . . .. . ....... .
Fuel Injection. Pump Camshaft Timing. Fuel Injection Service ................ . Fuel Pump Timing Dimension Setting:
On Engine .................................. . Off Engine ............................ ' ... .
Fuel Rack Setting-Using the 8S2349 Rack Positioning Tool Group and 9M9268 Dial Indicator.
5 4
7 4
5 6
8
Fuel Rack Setting-Using the Rack Setting Gauge. Fuel System Adjustments ............... .
Governor Adjustments.
Locating Top Dead Center Compression Position for No. I Piston. . . . . . . . . . ......... .
Testing Fuel Injection Equipment.
Visual Inspection ...
ADDITIONAL TOOL REQUIREMENTS
Crankshaft Rear Oil Seal Installation. . ........ .
Air Compressor ....................... .
Bolt, Nut and Taperlock Stud Torque ......... .
Connecting Rod.... ..... . Crankshaft ............. . Cylinder Blocks:
4 Cylinder.. . .......................... . 6 Cylinder ... .
Cylinder Head ....................... . Cylinder Liner .............................. .
Filter Base .................................. .
10 Water Pump Seal Installation.
SPECIFICATIONS
23
II
21 22
22 23 16 22
Oil Pump ............... .
Piston Rings.... .....
Solenoid Switch .. . Starting Motor ......... .
Timing Components ........ . Tur bocharger CAire search-T 1210) . Turbocharger CSchwitzer E Modell.
Valves
8 5
9
5
4
4
10
20
21
26 25,26
18 17 18
Fuel Injection Equipment .................... . 19 12 13
Valve Cover ..................................... . 13 17 IS 16
Fuel Transfer Pump .......................... .
Generators .................................... 25 Generator Regulators . . . . . . . . . . . . . . . . . . . . . . . . . .. 24 Governor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14, IS
Valve Guide and Seat Inserts .................. . Valve Rocker Arms and Lifters ................ .
Water Pump .............................. . Water Temperature Regulator.
17 19
3
) .f
'--"- '" ~;"
4.75" BORE, FOUR CYLINDER TWO VALVE VEHICLE ENGINE
INDEX
SYSTEMS OPERATION
Air Induction and Exhaust Systems ...................... 7 Alternators ......................................... 11
Circuit Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 13 Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10
Fuel Injection Pump Operation. . . . . . . . . . . . . . . . . . . . . . . . .. 5 Fuel Injection Valve .................................. 6 Fuel System ........................................ 5
Generator .......................................... 12
Generator Regulator .................................. 12 Governor Operation .................................. 6
Lubrication System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 9
Solenoid ........................................... 13 Starting Motor ...................................... 13 Starting and Charging Systems .......................... 11
Valves and Valve Mechanism. . . . . . . . . . . . . . . . . . . . . . . . . . .. 8
TESTING AND ADJUSTING
Air Induction and Exhaust System ....................... 31 Checking Inlet Manifold Pressure at Torque
Converter Stall Speed ............................ 31 Compression. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 32 Crankcase Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 32 Cylinder Condition ............................ , ...... 32 Cylinder Head .................................... 33 Measuring Inlet Manifold Pressure ..................... 31 Precombustion Chamber Position. . . . . . . . . . . . . . . . . . . . .. 33 Restriction of Air Inlet and Exhaust ................... 31 Valve Clearance Setting ............................. 33
Basic Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 39 Connecting Rods and Pistons . . . . . . . . .. . . . . . . . . . . . . . .. 39 Crankshaft .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 39 Cylinder Liner Projection . . . . . . . . . . . . . . . . . . . . . . . . . . .. 39 Flywheel ........................................ 39 Oil Pump Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 40
Cooling System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 36 Testing Cooling System ............................. 36 Visual Inspection .................. . . . . . . . . . . . . . . .. 36
Flexible Drive Coupling ............................... 46 Fuel System ........................................ 23
Accessory Drive Shaft Timing ........................ 27 Check Fuel Injection Pump Lifter
Washer and Pump Plunger ......................... 23
Checking Fuel Injection Pump Timing-On Engine ........ 25 Checking Fuel Injection Valve ........................ 23 Fuel Bypass Valve ................................. 24 Fuel Injection Pump Timing Dimension Setting-Off Engine . 26 Fuel Injection Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 24 Fuel Injection Valve ............................ , 23, 24 Fuel Injection Pump Installation ...................... 24 Fuel Rack Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 28 Fuel System Adjustments. . . . . . . . . . . . . . . . . . . . . . . . . . .. 25 Governor Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 29 Locating Top Center Position for
No.1 Piston .................................... 24 Testing Fuel Injection Equipment ..................... 23 Visual Inspection .................................. 23
Lubrication System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 34 Excessive Oil Consumption .......................... 34 High Oil Pressure .................................. 34 Low Oil Pressure .................................. 34 Oil Pressure ...................................... 35 Unusual Bearing Wear. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 34
Problem Solving ..................................... 14
Starting and Charging System ........................... 41 Battery .......................................... 41 Charging System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 44 Starting System ................................... 41
SPECI FICATIONS
Alternators ..... . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 63, 64, 65 Alternator Regulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 65
Connecting Rod ..................................... 60 Crankshaft ......................................... 62 Cylinder Block ...................................... 60 Cylinder Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 53 Cylinder Liner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 61
Flexible Drive Coupling ............................... 75 Fuel Bypass Valve .................................... 49 Fuel Injection Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 48 Fuel Transfer Pump .................................. 49
Generators ...................................... 66,67 Generator Regulators ........................... 67,68,69 Governor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 50
Oil Filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 58 Oil Pump ........................................... 57
Piston and Rings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 61 Power Take-off and Hydraulic Pump Drive ................. 74
Radiator ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 59
Starter Solenoids .................................. 73, 74 Starting Motors ............................. 70,71,72,73
Temperature Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 59 Timing Gears . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 51 Turbocharger (AiResearch-T0490) ....................... 55 Turbocharger (AiResearch-TI210) ....................... 54 Turbocharger (Schwitzer E Model) ....................... 55 Turbocharger (Schwitzer-3LK) .......................... 56
Valves ............................................. 52 Valve Cover ......................................... 54 Valve Rocker Arms and Lifters .......................... 53
Water Pump ........................................ 59
3
;.-.
INDEX DISASSEMBL Y AND ASSEMBLY
941 & 951 ENGINE ",
,'C" ":» INDEX
Air Induction and Exhaust System Components ............................. 10
Basic Block Components ............................................... 16
Camshaft ........................................................... 13 Camshaft Bearings .................................................... 13 Camshaft Gears ...................................................... 13 Connecting Rods ..................................................... 17 Cooling System Components ............................................ 22 Crankshaft .......................................................... 17 Crankshaft Front Oil Seal .............................................. '. 13 Crankshaft Pulley . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 12 Crankshaft Rear Oil Seal ............................................... 15 Cylinder Block ....................................................... 16 Cylinder Head ....................................................... 10 Cylinder Head and Valve Components .................................... , 11
Engine Front Support ................................................. 12 Engine Removal and Installation ......................................... 9 Exhaust Manifolds .................................................... 10
Fan Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 23 Flywheel ........................................................... 14 Flywheel Housing ..................................................... 14 Fuel Filter .......................................................... 17 Fuel Priming Pump .................................................... 19 Fuel Injection Pump Housing ........................................... , 20 Fuel System Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 17 Fuel Transfer Pump .................................................. , 19
Governor ........................................................... 17
Lubrication System Components ........................................ , 21
Main Bearings ........................................................ 17
Oil Pump ........................................................... 21
Pistons ............................................................. 17
Radiator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 24 Rings ............................................................. , 16 Rocker Arm Cover ................................................... , 11 Rocker Arm and Push Rods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 12
Service Guide ....................................................... , 6
Timing Gear Cover ...... ' ............................................. , 12 Timing Gears ........................................................ 13 Torque Converter Oil Cooler ............................................ 22
Valves .............................................................. 12
Water Pump ......................................................... 23 Water Temperature Regulator ........................................... 22
941 & 951 ENGINE
Approximate weight of flywheel and ring gear, 100 Ibs. (45,36 mkg).
Approximate weight of flywheel housing, 100 Ibs. (45,36 mkg).
Align mark (4) on flywheel with mark (6) on crankshaft.
DISASSEMBLY AND ASSEMBLY
Heat ring gear (5). Do not exceed 6000 F. (315 0
C). Install with chamfered portion of ring gear teeth toward starter pinion when flywheel is installed.
Trim gasket (7) flush with bottom face of cylinder block. Gasket will leak if not cut square and flush with oil pan face.
FLYWHEEL AND FLYWHEEL HOUSING 4-Mark on Flywheel. 5-Ring gear. 6-Mark on Crankshaft. 7-Gasket.
CRAN KSHAFT REAR 01 L SEAL
Refer to SERVICE GUIDE for Preliminary Information.
Tools Required: 958871 Locator. 958531 Wear 51eeve Installer
Ring 958548 5eal Pilot. 7M2770 Cement.
958890 Bolts, (three). 958864 Pusher Plate. 958858 Nut. 9585435eal Installer Ring.
,',- Bolt locator (3) to crankshaft (7) with three bolts ;.y (2). Do not tighten bolts.
Install wear sleeve (6) over locator assembly (3) and crankshaft (7) with angle (A) toward rear of engine. Tighten bolts (2).
Install wear sleeve installer ring (1), pusher plate (5) and nut (4).
CAUTION - Before tightening nut (4), check to see that wear sleeve (6) is started evenly on crankshaft (7).
Tap pusher plate (5) with a soft hammer while tightening nut (4). Tighten nut until pusher plate bottoms against locator assembly (3).
INSTALLING CRANKSHAFT REAR OIL SEAL WEAR SLEEVE
1-958531 Wear 51eeve Installer Ring. 2-958890 Bolts, (three). 3-958871 Locator. 4-958858 Nut. 5-988864 Pusher Plate. 6-Wear sleeve. ·7-Crankshaft. A-Angle.
TABLE OF
TABLE OF CONTENTS
Periodic Service Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 4 10 Service Hours . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 7 50 Service Hours . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 16 100 Service Hours . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 25 250 Service Hours . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 28 500 Service Hours . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 34 1000 Service Hours . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 36 2000 Service Hours . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 45 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 49 General Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 50
Lubricating Oils .... " ............................. 50 Lubricating Grease .............................. 51 Diesel Fuel ..................................... 51 Hydraulic System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 52 Cooling System ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 52 Air Cleaner Elements ........................... , 54 Glow Plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 56 Fuel Injection Valves. . . . . . . . . . . . . . . . . . . . . . . . . . . .. 57 Rollers and Idlers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 58 Booster Batteries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 58 Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 59 Electric Starter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 59 Wiring Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 60 Servicing Hints ................................. , 61 Lift Arm Support Bracket . . . . . . . . . . . . . . . . . . . . . . . .. 61 Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 63 Locations of Serial Numbers ...................... 63
As a member of the National Safety Council, we are privileged to use the Green Cross for Safety to designate not only our interest in Safety, but to emphasize and call attention to the safety precautions in this book.
9 ~
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,
SLEEVE METERING FUEL SYSTEM DISASSEMBLY AND ASSEMBl Y
ALPHABETICAL INDEX
The Alphabetical Index aids in quickly locating the page number of the operation to be performed and refers to the operation number as listed in the Service Index on the following page.
Page No.
Oper.
Check Valve and Bypass Valve ............................................ 5
Fuel Injection Pumps ................................................... 7 Fuel Injection Pumps. Disassemble & Assemble ............................... 8 Fuel Injection Pump Housing, Disassemble & Assemble ...................... 20,21 Fuel Injection Pump Housing & Governor, Install as a Unit ................... 22 Fuel Injection Pump Housing & Governor, Separation & Connection ............ 12-15 Fuel Transfer Pump. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 9-11
Governor, Disassemble & Assemble ...................................... 16-19
Speed Limiter ..............•............................... _ . _ . . . . . . . .. 6
No.
3 4 8 9 6 5
7
2
3
951 B TRAXCAVATOR
ENGINE
General Information
F:lel System
Air Induction and Exhaust System
Engine Timing Components ..
Cooling System .................... .
Lubrication System
Electrical System
POWER TRAIN
General Information ........ .
Torque Converter and Transmission.
Transmission Hydraulic Controls ..
Transmission Lubrication System
Steering Clutches, Brakes and Final Drive
CHASSIS
Undercarriage ..
LOADER PORTION
Loader Hydraulic System
SYSTEMS OPERATION 2-1
Table of Contents
2-10
2-20
2-30
2-40
2-50
2-60
2-70
2-100
2-110
2-120
2-130
2-150
2-210
2-310
951 B TRAXCAVATOR SYSTEMS OPERATION 2-30
Engine
AIR INDUCTION AND EXHAUST SYSTEM
Air induction and exhaust system parts include: l-Exhaust manifold.,2-lnlet manifold. 3-Engine cylinder. 4-Air inlet. 5-Turbocharger compressor impeller. 6-Turbocharger turbine wheel. 7-Exhaust outlet.
This engine has an exhaust driven turbocharger to provide compacted air to the cylinders.
Filtered air from the dry-type air cleaner is piped to the turbocharger compressor section where air is compressed. From the compressor, air is directed into the inlet manifold to the engine cylinders.
When the engine load increases, more fuel is injected into the engine cylinders. The volume of exhaust gas increases, this causes the turbocharger turbine wheel and compressor impeller to rotate faster. The increased RPM of the impeller increases the quantity of inlet air. As the turbocharger provides additional inlet air, more fuel can be burned; hence more horsepower derived from the engine.
ALTITUDE OPERATION Maximum turbocharger speed is determined by
the rack setting, the high idle speed setting and the altitude at which the engine is operated. The high idle speed and the rack setting are not the same for all altitudes.
If the high idle speed or the rack setting is greater than specified for the altitude at which the engine is operated, serious damage to engine or turbocharger parts can result.
The fuel pump rack has been set by qualified personnel for a particular engine application. The governor housing and turbocharger are sealed to prevent unqualified personnel from adjusting the rack; adjusting the high idle speed or installing the wrong turbocharger nozzle.
The engine can be operated at a lower altitude than specified without danger of engine damage. In
this situation the engine will perform at slightly less than maximum efficiency. When operated-at a higher altitude, the rack setting and high idle speed setting must be changed.
VALVES AND VALVE MECHANISM This is a four stroke per cycle engine; i.e., four
separate piston strokes are required to complete the firing of one cylinder.
There are two in-head valves (inlet and exhaust) for each cylinder. The valves are actuated by the camshaft through mechanical lifters, push rods and rocker arm assemblies. The camshaft is timed to the crankshaft and turns at one-half crankshaft RPM. Valve rotators cause the valves to rotate during engine operation.
Components of a typical valve and valve mechanism group are: l-Valve spring. 2-Retainer. 3-Lock. 4-Rocker arm assembly. 5-Push rod. 6-Valve guide. 7-Valve rotator. 8-Valve. 9-Valve seat insert.
Correctly adjusted valves operate for many hours before they need to be reconditioned. Eventually, however, the valve faces and seats become pitted, causing loss of compression. The cylinder head contains valve seat inserts which can be replaced when the seats have been reground to the extreme limits.
TURBOCHARGER The turbocharger is mounted to the engine ex
haust manifold. All the exhaust gases from the diesel engine pass through the turbocharger.
The exhaust gases enter the turbine housing and are directed through the blades of & turbine wheel, causing the turbine wheel and a compressor wheel to rotate.
Filtered inlet air' from the air cleaners is drawn through the air inlet of the compressor housing by
1
951 POWER TRAIN INDEX
SYSTEMS OPERATION
Front Idlers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 16
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 4
Planetary Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5 First Speed Forward. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6 First Speed Reverse ................................ 7 Second Speed Forward. . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6 Third Speed Forward. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6
Recoil Spring and Track Adjusting Mechanism . . . . . . . . . . . . .. 16
Steering Clutches, Brake and Final Drive .................. 12
Steering Clutch Hydraulic System ....................... ~. 13 Steering Clutch Release Hydraulic Control . . . . . . . . . . . . . . . .. 13
Torque Converter .................................... 5 Torque Converter and Transmission . . . . . . . . . . . . . . . . . . . . .. 5 Track ............................................. 15 Track Carrier Rollers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 15 Track Rollers ....................................... 16 Transmission Hydraulic Controls ........................ 8 Transmission Lubrication System ........................ 11
Undercarriage .......................... ' ... '. . . . . . . . .. 15
TESTING AND ADJUSTING
Backlash, Bevel Gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .. 26 Bevel Gear and Pinion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 26 Bevel Gear Shaft Bearing Preload ........................ 26 Bevel Pinion Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 27
Checking Flexible Drive Coupling Alignment ............... 25
Flexible Drive Coupling ............................... 25
Instrument Test, Chart ...... . . . . . . . . . . . . . . . . . . . . . . . . .. 23
Operational Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 19
Problem Solving ..................................... 19
Steering Clutches and Brakes ........................... 28
Steering Clutches and Brakes Control Linkage .............. 28 Steering Clutch Release Hydraulic Test .................... 28
Steering Oil Pump, Specifications ........................ 22
Torque Converter, Transmission and Hydraulic Controls ...... 21 Track Roller Frame Alignment . . . . . . . . . . . . . . . . . . . . . . . . .. 31 Tracks
Hydraulic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 30 Mechanical ..................................... " 30
Transmission Control Linkage. . . . . . . . . . . . . . . . . . . . . . . . . .. 24 Transmission Oil Pump, Specifications .................... 22
Undercarriage ....................................... 30
Visual Checks ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 19
SPECIFICATIONS
Bevel Pinion ........................................ 35 Steering Clutch Case and Cover. . . . . . . . . . . . . . . . . . . . . . . . .. 38 Steering Clutch Release Hydraulic Control ................. 40
Case and Cover for Steering Clutch ....................... 40 Steering Clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 39
Filter for the Steering Clutch ........................... 40 Torque Converter .................................... 36
Final Drive ......................................... 41 Track ............................................. 42
Flexible Drive Coupling (86Jl·86Jl931) .................. 35 Track Carrier Roller .................................. 43
Flexible Drive Coupling (86Jl932·Up) .................... 35 Track Rollers ....................................... 43
Front Idler ......................................... 51 Track Roller Frame. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 34
Oil Pump for the Steering Clutch ........................ 39 Transmission Hydraulic Controls ........................ 37 Transmission Filter ................................... 37
Pressures of the Hydraulic Controls ...................... 38 Transmission Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 36
Recoil Spring ....................................... 43
3
INDEX DISASSEMBLY AND ASSEMBLY
941 & 951 INDEX
POWER TRAIN
Bevel Gear and Pinion Setting . . . . . . . . . . . . . . . . . . . . • . . . . .. 52 Bevel Gear Shaft Bearings and Bevel Gear Removal •......... 51 Bevel Pinion Disassembly and Assembly .•. . . . . . . . . . . . . . . .. 28 Bevel Pinion Removal and Installation .................... 27
Checking Flexible Drive Coupling Alignment ............... 7 Control Pedals Removal ....................•.......... 39
Final Drive Assembly ............••.••.•....•...••..•. 62 Final Drive and Bearing Cage Disassembly •................ 55 Final Drive Disassembly ..............•..•............. 58 Final Drive Pinion Removal and Installation . . . . . . . • . . • . . . .. 53 Final Drive Removal and Installation ..•.......•.......... 57 Flexible Coupling Drive ........•...•••.•...•••.•••.•.• 7
Planetary Transmission Disassembly and Assembly ......... " 16 Planetary Transmission Removal and Installation .••...••..•. 15 Power Train Service Guide .•.•.......•.............•... 5
Steering Clutch and Bevel Gear Case and Cover Removal .•.... 41 Steering Clutch and Brake Controls (Pedal Steer Machines) .... 39 Steering Clutch and Bevel Gear Shaft Removal (Lever
Steer Machines) ...................................• 47
Steering Clutch and Bevel Gear Shaft Removal (Pedal Steer Machines) ................................... 46
Steering Clutch Control Adjustments ...... . . . . . . . . . . . . . .. 44 Steering Clutch Case Cover Removal (Lever Steer Machines) ... 43 Steering Clutch Case Cover Removal (Pedal Steer Machines) ... 42 Steering Clutch Disassembly and Assembly. . . . . . . . . . . . . . . .. 49 Steering Clutch Lever Bumper Stops. . . . . . . . . . . . . . . . . . . . .. 44 Steering Clutch Control Mechanism (Lever Steer Machines) . . .• 44
Disassembly and Assembly . . • . . . . . . . . . . . . . . . . . . . . . . .. 44 Steering Clutch Oil Filter Disassembly ..................•. 41 Steering Clutch Oil Strainer Disassembly .... , ............. 41 Steering Clutch Release Hydraulic Control Removal ... , .. : . .. 39
Torque Converter Disassembly and Assembly ..••.. ' •..•..... 12 Torque Converter, Transmission and Bevel Pinion Removal. . •• 9 Torque Converter Removal and Installation ................ 11 Transmission Hydraulic Controls ......................•. 31
Disassembly and Assembly . . . . • . . . . . . . . . . . . . . . . . • • • .• 32 Removal and Installation ............•............... 31
Transmission Lubrication System Components. . . . . . . . . . . . .. 35 Disassembly and Assembly . • . . • . . . . . . . . . . . • • . . . . . . . •• 36 Removal and Installation •. • . . . . . . . . . . . . . . . . . • . . . . . .. 35
UNDERCARRIAGE
Alignment of Track Roller Frames .................•..... 75
Filling and Bleeding the Hydraulic Track Adjuster •..•....... 74 Front Idler Disassembly .......................•....... 71 Front Idler Removal and Installation •..••.....••....••... 68
Installing Track . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . • . . •. 67
Recoil Spring ........•....••.••..••••..••.••...•••.. 72 Relieving Track Tension •..•••..•.•••••••••.••.••••••.• 66
Separating Track . . . . . . . . . . . . . . . . . . . . • . . . • • . • • • . . . . • .. 66
4
Track Adjusting Mechanism ............................ 73 Track Carrier Roller Disassembly .......•....•.....•..... 69 Track Carrier Roller Removal and Installation .............. 68 Track Disassembly and Assembly ........................ 67 Track Roller Frame Removal ..........................• 74 Track Roller Disassembly ..............•.............•. 70 Track Roller Removal and Installation .................... 68
Undercarriage ........••.•................•.•........ 66 Undercarriage Service Guide. . . . . . . . . . . . • . . . . . . • • . . . . • .. 6
941 & 951 LOADER COMPONENTS DISASSEMBL V AND ASSEMBL V
INDEX
Bucket ............................................................. 14 Bucket Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 14 Bucket Positioner Mechanism ............................................. 10'
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Control Valve and Linkage Removal ..................................... . 6 ,
_/
Control Valve Disassembly ............................................. . 7
Hydraulic Oil Pump .................................................. . 9 Hydraulic System Components ......................................... . 6
Lift Circuit Make·up Valve ............................................. . 8 Lift and Tilt Control Valve ............................................. . 7 Lift Cylinder ....................................................... . 12 Lift Cylinder Oil Lines ................................................ . 11 Loader Frame ....................................................... . 14
Main Pressure Relief Valve ............................................. . 8
Service Guide ......................................... '.' ............ . 5
Tank Removal and Installation .......................................... . 6 Tilt Cylinder ........................................................ . 13 Tilt Cylinder Oil Lines ................................................ . 11 Tilt Circuit Make-up Valve ............................................. . 8 Tilt Kickout Valve ................................................... . 8
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'-... ~?
4
LOADER HYDRAULICS INDEX
SYSTEMS OPERATION
Bucket Positioner Hydraulic Circuit ...................... 10 Main Pressure Relief Valve ............................. 13 Bucket Positioner Hydraulic Circuit (Early Machines) ........ 11
Systems Operation ................................... 8 Lift Circuit ......................................... 13 Lift Kickout (Mechanical) .............................. 13 Tilt Circuit ......................................... 9 Loader Hydraulic System .............................. 5 Tilt Circuit Relief Valves ............................. " 9
TESTI NG AND ADJUSTI NG
Bucket Positioner Hydraulic Circuit ...........•.......... 20 Operational Checks ................................. " 15 Bucket Positioner Hydraulic Circuit (Early Machines) ........ 21
Tilt Circuit Relief Valves ............................. " 18 Checking Pump Efficiency .................•........... 16
Visual Checks •.••....•.............................. 15 Lift Kickout System .. . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .. 23 Loader Hydraulic System .............................. 15 Loader System Test Procedures ......................... 16
Main Pressure Relief Valve .............................. 18
SPECI FICATIONS
Auxiliary Control Valve ............................... 29 Loader Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 28
Bucket Positioner Master Valve .......................... 28 Main Control Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 26 Bucket Positioner Master Valve (Early Machines) ............ 28 Main Pressure Relief Valve ............................. 26
Cylinders. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . .. 29 Rod End Tilt Relief Valve .............................. 27
Head End Tilt Relief Valve . . . . . . . . . . . . • . . . . . . . . . . . . . . .. 27 Hydraulic Oil Pump .................................. 27
3
9518 TRAXCAVATOR
December 1967
TESTING AND ADJUSTING 3-1
Table of Contents
ENGINE
Problem Solving ........................ , ....................... .
Fuel System .......................... .
Air Induction and Exhaust System ........................ , , , , , , , . ,
Cooling System
Electrical System ................................................ .
POWER TRAIN
Problem Solving
3-10
3-20
3-30
3-50
3-70
3-100
Torque Converter, Transmission and Hydraulic Controls, 3-110
Steering Clutches and Brakes. , ..... , .... , ... , .... , ' , . , .. , , , . , . , 3-150
LOADER PORTION
Loader Hydraulic System "",., .. ,",." ... " .... ',' , , , . , . , ' . " 3-310
951 B TRAXCAVATOR
Dial indicator adjusted to zero reading: 3-Spacer. 4-Hole attachment.
4. Before starting the engine, be sure the rack moves freely throughout its entire length of travel. The speed limiter will restrict the rack travel until the engine is operating with proper oil pressure, or the plunger is manually depressed.
5. If it is necessary to adjust the rack, refer to FUEL RACK SETTING - USING THE RACK SETTING GAUGE and follow steps 1,4 and 5.
GOVERNOR ADJUSTMENTS
i CAUTION-The low and high idle RPM and the _ _ rack setting dimensions for this engine are in-
.'0: corpora ted in the RACK SETTING INFORMATION. ~ Only competent personnel should attempt to ~ adjust these settings.
Low and High Idle RPM The engine RPM should be checked with an ac
curate tachometer. Provisions for using a tachometer have been made at the Service Meter drive housing. The reading taken at this point will be one-half engine RPM' with a 1: 1 tachometer.
Low and high idle RPM can be adjusted by removing the cover on top of the governor and turn-
Parts involved in making governor adjustments are: 1-Cover. 2-Retainer holes (two). 3-High idle adjusting screw. 4-Low idle adjusting screw.
TESTING AND ADJUSTING 3-20
Engine
ing the high idle and low idle adjusting screws. Turning either adjusting screw in a clockwise direction will decrease the respective high and low idle RPM. The holes in the cover are shaped to prevent the screws from turning after the adjustment has been made.
After setting the idle RPM, move the governor control lever to change the engine RPM. Return it to the idle position and recheck the idle RPM. Re-peat the adjustment procedure until the specified .: idle RPM is obtained.
FUEL RACK SETTING-USING THE RACK SETTING GAUGE
Use either the 7S7113 or the 8M530 Rack Setting Gauge to check the fuel rack setting. The fuel rack can be checked and adjusted with the fuel injection pump housing either installed or off the engine. 1. Remove the rack cover from the front of the
accessory drive housing rear flange and the cover from the rear of the governor housing.
This view illustrates the installation of the: 1-7S7113 or 8MS30 Rack Setting Gauge.
2. Install a 7S7113 or 8M530 Rack Setting Gauge over the front end of the fuel rack.
3. Set gauge to the proper rack setting. Refer to the RACK SETTING INFORMATION for correct setting.
2
4---_--t:
175644
This cross section identifies: 2-Torque spring. 3-Spacer. 4-Collar. S-Shims. 6-Stop bar.
5
951B TRAXCAVATOR
December 1967
DISASSEMBLY AND ASSEMBLY 4-1
Table of Contents
General Instructions
ENGINE
Service Guide ..
Engine Removal and Installation
Fuel System Components
Air Induction and Exhaust System Components
Timing Components
Cooling System Components
Lubrication System Components
Crankshaft, Pistons and Connecting Rods
POWER TRAIN
Service Guide
Flexible Coupling Drive
Torque Converter, Transmission and Bevel Pinion
Transmission Hydraulic Controls
Transmission Lubrication System Components
Steering Clutch and Brake Controls
Steering Clutches, Bevel Gear and Final Drive
Service Guide
Undercarriage
CHASSIS
LOADER PORTION
Service Guide
Hydraulic System Components
Hydraulic Lines, Cylinders, Bucket, Bucket Control and Frame
4-3
4-10
4-15
4-20
4-30
4-40
4-50
4-60
4--65
4-100
4-105
4-110
4-120
4-130
4-150
4-155
4-200
4-210
4-300
4-310
4-330
1
)
)
>.
9518 TRAXCAVATOR SPECIFICATIONS 5-1
Table of Contents
ENGINE 5-10
Connecting Rod ...... . Piston Rings . . . . . ........... . Cooling System Pressure . Pump, Fuel Transfer Crankshaft .... ............................... .
10 6 9 9 3 9
Pump, Oil ............................. . Cylinder Block ............... . ...... . Cylinder Head .......... . ....... . Cylinder Liner .......... .
. "Engine Support
Filter Base .............. . Flexible Coupling Drive Fuel Injection Equipment .. . Fuel Transfer Pump ..... .
General Tightening Torque (Bolt, Nut, Taperlock Stud). Generator ................ . Generator Regulator Governor
Oil Pump
2
7 2 2 3
I 8 8 3
7
Pump, Water
Radiator
Solenoid Switch Starting Motor
Timing Components Turbocharger
Valves ................. . Valve Guide and Seat Inserts Valve Rocker Arms and Lifters
Water Pump .......... . Water Temperature Regulator
POWER TRAIN 5-100
Bevel Pinion 3 Steering Clutch Steering Clutch Hydraulic Control
Filter, Steering Clutch Oil Steering Clutch Oil Filter ........ . Filter, Transmission Oil .. . Steering Clutch Oil Pump Final Drive ............... .
8 6 7 3
Steering Clutch Release Hydraulic Control Flexible Coupling Drive ........... .
Hydraulic Control Pressures
Oil Pump, Steering Clutch Oil Pump, Transmission
6
6 5
Torque Converter Transmission Transmission Hydraulic Controls Transmission Oil Filter Transmission Oil Pump
CHASSIS 5-200
Front Idler ............................... ..... . 3
2
2
Track Carrier Rollers
Recoil Spring .................... . Track Rollers ........... .
Track Track Roller Frame
LOADER PORTION 5-300
Bucket Positioner Master Valve 4 Main Pressure Relief Valve ........
Cylinders ...................... . 4 Relief Valve, Head End Tilt
Head End Tilt Relief Valve Hydraulic Oil Pump ........ .
3 Relief Valve, Main Pressure . . . . . . . . . . .
2 Relief Valve, Rod End Tilt . ...... , ........
Lift Cylinders 5 Tilt Cylinders ...... . .........
Loader Frame 6 Valve, Bucket Positioner Master ..
Main Control Valve ..... 2 Valve, Main Control .... . ........
. -10
3 7 6
6
8 9
5 5
4 4 4
6 6
7 8 8 6 8
3 2 4 6 5
2
3
2
3
3 3 3
4
4 4
1
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