John Deere 655 755 855 955 756 & 856 Compact Utility Tractors Technical Manual – PDF DOWNLOAD

Description

John Deere 655 755 855 955 756 & 856 Compact Utility Tractors Technical Manual – PDF DOWNLOAD

FILE DETAILS:

John Deere 655 755 855 955 756 & 856 Compact Utility Tractors Technical Manual – PDF DOWNLOAD

Language : English
Pages : 570
Downloadable : Yes
File Type : PDF
Size: 38.9 MB

TABLE OF CONTENTS:

John Deere 655 755 855 955 756 & 856 Compact Utility Tractors Technical Manual – PDF DOWNLOAD

TM1360 – 655 – 856 Compact Utility Tractors…………………………………….. 1
Introduction…………………………………………………………….. 2
Contents………………………………………………………………… 3
Section 10 – Specifications……………………………………………….. 5
GROUP 05 – Safety…………………………………………………….. 7
GROUP 10 – Repair Specifications……………………………………….. 17
GROUP 15 – Repair Information………………………………………….. 21
Torque Values…………………………………………………….. 21
GROUP 20 – Fuels, Lubricants and Coolants……………………………….. 25
Diesel Fuel………………………………………………………. 25
Hydraulic Transmission Oil…………………………………………. 26
Diesel Engine Oil…………………………………………………. 26
Gear Oil…………………………………………………………. 27
Extreme Pressure or Mutipurpose Grease………………………………. 27
Engine Coolanr……………………………………………………. 28
GROUP 25 – Serial Number Locations……………………………………… 41
GROUP 30 – Equipment Compatibility……………………………………… 0
Implement Combination Chart………………………………………… 0
Section 20 – Engine Repair………………………………………………… 43
GROUP 05 – Diesel Engine Repair – CTM3………………………………….. 45
GROUP 10 – Remove and Install Oil Cooler………………………………… 47
GROUP 15 – Remove and Install Radiator………………………………….. 49
GROUP 20 – Remove and Install Diesel Engine……………………………… 53
Section 30 – Fuel and Air…………………………………………………. 55
GROUP 05 – Fuel Transfer Pump………………………………………….. 57
GROUP 10 – Fuel Tank………………………………………………….. 59
GROUP 15 – Fuel Tank Tube and Sender……………………………………. 61
GROUP 20 – Air Cleaner………………………………………………… 63
Remove and Install Air Cleaner, 655, 755/756 and Early 855/856 Tractors…. 64
Remove and Install Air Cleaner – Late 855 and all 955 Tractors…………. 65
Remove and Install Air Restriction Indicator…………………………. 0
Section 40 – Electrical…………………………………………………… 67
GROUP 05 – Alternator Repair Specifications……………………………… 69
GROUP 10 – Nippon Denso 35 Amp Alternator……………………………….. 71
Remove and Install Voltage Regulator………………………………… 71
Disassemble and Test Rotor…………………………………………. 0
Assemble Rotor……………………………………………………. 0
Disassemble and Test Stator and Rectifier……………………………. 0
Assemble Stator and Rectifier………………………………………. 0
GROUP 15 – Nippon Denso 40 Amp Alternator……………………………….. 0
Disassembly Alternator…………………………………………….. 0
Inspect Alternator………………………………………………… 0
Assemble Alternator……………………………………………….. 0
Section 50 – Hydrostatic Transmission………………………………………. 73
GROUP 05 – Hydrostatic Transmission…………………………………….. 75
Specifications……………………………………………………. 76
Remove and Install Sheet Metal Panels……………………………….. 76
Remove Drive Shaft………………………………………………… 77
Install Drive Shaft……………………………………………….. 78
Remove and Install MFWD Drive Shaft…………………………………. 78
Remove and Install Charge Pump……………………………………… 79
Remove Hydrostatic Transmission…………………………………….. 80
Cross Section View – Hydrostatic Transmission………………………… 84
Disassemble Transmission…………………………………………… 85
Cross Section View – Center Section…………………………………. 92
Assemble Transmission……………………………………………… 94
Install Transmission………………………………………………. 99
Service Procedure………………………………………………….102
Bleed Hydraulic System……………………………………………..102
GROUP 10 – Transaxle…………………………………………………..103
Specifications…………………………………………………….105
Replace Seals……………………………………………………..107
Removal Preparations……………………………………………….107
Disconnect Linkage…………………………………………………108
Remove Rockshaft Housing Assembly……………………………………110
Disconnect Flow Divider and Selective Control Valves…………………..110
Remove Transaxle…………………………………………………..110
Remove Final Drive Axles……………………………………………111
Cross Section View – Transaxle………………………………………114
Repair Oil Supply System……………………………………………116
Repair PTO Inertia Brake……………………………………………117
Repair PTO Valves………………………………………………….119
Repair Rear PTO Shaft Assembly………………………………………121
Repair Differential Assembly………………………………………..122
Repair MFWD Gear Case Assembly………………………………………125
Remove Front Gear Case Cover………………………………………..128
Remove Gear Shaft Assemblies………………………………………..129
Repair PTO Shift Fork Asembly……………………………………….131
Repair PTO Reduction shaft Assembly………………………………….134
Repair Main PTO Shaft Assembly………………………………………135
Repair Mid PTO Shaft Assembly……………………………………….136
Repair Reduction Shaft Assembly……………………………………..137
Repair MID PTO Transfer Gear Assembly………………………………..137
Repair Differential Lock Lever Assembly………………………………138
Repair Range Shifter Shaft O-Ring……………………………………140
Repair Range Shift Fork Assembly…………………………………….144
Repair PTO Clutch Assembly………………………………………….145
Cross Section View – PTO Clutch……………………………………..149
Assemble PTO Clutch………………………………………………..149
Install PTO Clutch Assemblies……………………………………….152
Repair Differential Drive Shaft Assembly……………………………..152
Install Differential Drive Shaft Assembly…………………………….153
Install MID PTO Shaft Assembly………………………………………154
Install HI\LO Reduction Shaft Assembly……………………………….154
Install MID PTO Transfer Gear Assembly……………………………….154
Install Front Case Cover Assembly……………………………………155
Install MFWD Gear Case Assembly……………………………………..157
Adjust backlash – Differential Assembly………………………………158
Install Rear PTO Shaft Assembly……………………………………..161
Install Rear Case Cover Assembly…………………………………….161
Install PTO Valve Assembly………………………………………….162
Install PTO Inertia Brake Assembly…………………………………..163
Install Oil Supply System…………………………………………..164
Install Final Drive Axle Assemblies………………………………….165
Install Transaxle………………………………………………….167
Install Hydrostatis Transmission…………………………………….167
Install Linkage……………………………………………………169
Install ROPS………………………………………………………170
Install Rear Wheels………………………………………………..171
Install Rocksshaft Housing Assembly………………………………….171
Connect Flow Divider and Selective Control Valves……………………..171
Fill Hydraulic System Reservoir……………………………………..171
Bleed Hydraulic System……………………………………………..172
Adjust Control Linkages…………………………………………….172
GROUP 15 – Final Drives………………………………………………..173
Remove Final Drive…………………………………………………174
Planetary Carrier End Play Specification……………………………..176
Disassembly Final Drives……………………………………………177
Repair Planetary Gear Assembly – 655, 755/756, and 855/856 Tractors……..178
Repair Planetary Gear Assembly – 955 Tractors…………………………181
Remove Brake Camshaft Assembly………………………………………182
Remove Axle Shafts…………………………………………………182
Remove Oil Seal Wear Sleeve and Cover………………………………..183
Repair Axle Housing Assembly………………………………………..183
Assembly Axle Housing Assembly………………………………………185
Install Brake Camshaft Assembly……………………………………..186
Install Planetary Gear Assembly – 655, 755/756, and 855/856 Tractors…….186
Install Planetary Gear Assembly – 955 Tractors………………………..188
Install Final Drives……………………………………………….188
Install ROPS and Final Assembly……………………………………..190
Bleed Hydraulic System……………………………………………..191
Adjust Control Linkage……………………………………………..191
GROUP 20 – Mechanical front Wheel Drive (MFWD)……………………………193
Remove MFWD Axle…………………………………………………..194
Disassemble Final Drive Case………………………………………..196
Assemble Final Drive Case…………………………………………..198
Cutaway View – Spindle Gear Case…………………………………….201
Disassemble Spindle Gear Case……………………………………….202
Cross-Sectional View – MFWD…………………………………………208
Assemble Spindle Gear Case………………………………………….210
Disassemble Differential Input Housing……………………………….215
Disassemble Differential……………………………………………216
Assemble Differential………………………………………………218
Assemble Axle Housing………………………………………………222
Adjust Front Axle End Play………………………………………….224
Adjust Front Axle Toe-In……………………………………………224
GROUP 25 – Power Train Gears and Shafts………………………………….227
GROUP 30 – Speed Control Linkage………………………………………..234
Remove Speed Control Linkage………………………………………..234
Speed Control Linkage………………………………………………239
Install Speed Control Linkage……………………………………….240
Section 60 – Front Axle, Steering and Brakes…………………………………244
GROUP 05 – Standard Front Axle………………………………………….246
Specifications…………………………………………………….247
Remove Standard Front Axle………………………………………….247
Install Standard Front Axle…………………………………………248
Adjust Axle End-Play……………………………………………….249
Remove Spindle Shaft and Hub………………………………………..249
Repair Spindle shaft Bushing………………………………………..250
Repair spindle Shatf Bearing and Race………………………………..251
Install Spindle Shaft and Hub……………………………………….251
Remove Wheel Bearings………………………………………………252
Install Wheel Bearings……………………………………………..253
Adjust Toe-In……………………………………………………..254
GROUP 10 – Steering Valve………………………………………………256
Specifications…………………………………………………….257
Remove Steering Valve………………………………………………258
Disassemble Steering Valve………………………………………….259
Disassemble Metering Section………………………………………..262
Disassemble Steering Tube Section……………………………………265
Cross-Section View – Steering Valve………………………………….267
Assemble Steering Valve…………………………………………….268
Asemble Metering Section……………………………………………269
Assemble Control Valve Section………………………………………274
Install Steering Valve……………………………………………..277
GROUP 15 – Brake Linkage……………………………………………….280
Specifications…………………………………………………….280
Remove Brake Linkage……………………………………………….280
Install Brake Linkage………………………………………………285
Repair Brake Discs…………………………………………………290
Section 70 – Hydraulics……………………………………………………292
GROUP 05 – Hydraulic Pump………………………………………………294
Specifications…………………………………………………….294
Remove Hydraulic Pump………………………………………………295
Avoid High-Pressure Fluids………………………………………….296
Disassemble Hydraulic pump………………………………………….297
Assemble Hydraulic Pump…………………………………………….298
Repair Suction Screen………………………………………………300
Install Hydraulic Pump……………………………………………..300
Hydraulic System Bleed Procedure…………………………………….301
GROUP 10 – Flow Divider and Selective Control Valve (SCV’s)………………..302
Remove Flow Divider and Selective Control Valves………………………302
Avoid High-Pressure Fluids………………………………………….303
Repair System Relief Valve………………………………………….304
Repair Priority Flow Divider………………………………………..304
Repair Proportional Flow Divider…………………………………….305
Repair Regenrative (Front) and Float (Rear) Sections – (SCV’s)………….306
Install Flow Divider and Selective Control Valves……………………..310
GROUP 15 – Rockshaft…………………………………………………..312
Specifications…………………………………………………….313
Remove Piston Cover………………………………………………..314
Repair Lowering Check Valve…………………………………………314
Repair Stop Valve………………………………………………….315
Repair Implement Relief Valve……………………………………….316
Install Piston Cover……………………………………………….316
Remove Rockshaft Piston…………………………………………….317
Install Rockshaft Piston……………………………………………318
Remove Rockshaft Housing……………………………………………318
Avoid High-Pressure Fluids………………………………………….320
Disassemble Rockshaft Housing……………………………………….321
Repair Rockshaft Housing and Components………………………………322
Assemble Rockshaft Housing………………………………………….323
Install Rockshaft Housing…………………………………………..325
Remove Rockshaft Control Valve………………………………………327
Disassemble Rockshaft Control Valve………………………………….328
Assemble Rockshaft Control Valve…………………………………….330
Adjust Rockshaft Control Valve………………………………………334
GROUP 20 – Hydraulic Hoses……………………………………………..336
Repair Hydraulic Hoses……………………………………………..336
Section 80 – Mower’s, Hitches, Seat and ROPS…………………………………338
GROUP 05 – Mower Spindles……………………………………………… 0
Specifications……………………………………………………. 0
Remove Spindle Assembly……………………………………………. 0
Disassemble Spindles – 60/72 In. Mowers……………………………… 0
Cross-Section View – 60 and 72 In. Mowers……………………………. 0
Assemble Spindles – 60/72 In. Mowers………………………………… 0
Disassemble Spindles – 50 In. Mowers………………………………… 0
Cross-Section View – 50 In. Mowers………………………………….. 0
Assemble Spindles – 50 In. Mowers…………………………………… 0
Install Spindle Assembly…………………………………………… 0
GROUP 10 – Mower Gearbox………………………………………………. 0
Specifications……………………………………………………. 0
Remove Gearbox……………………………………………………. 0
Disassemble Mower Gearbox………………………………………….. 0
Cross-Section View – 60/72 In. Early Mowers………………………….. 0
Cross-Section View – 60/72 In. Late Model Mowers……………………… 0
Cross-Section View – Gearbox – 60 In. Mowers…………………………. 0
Assemble Mower Gearbox…………………………………………….. 0
Install Mower Gearbox……………………………………………… 0
GROUP 15 – Operator’s Seat……………………………………………..340
Remove Operator’s Seat – North American………………………………340
Install Operator’s Seat – North American……………………………..341
Exploded View – European Seat Assembly……………………………….343
Remove Operator’s Seat – European (Early version)……………………..345
Install Operator’s Seat – European (Early version)…………………….347
Adjust Operator’s Seat – European……………………………………349
Adjust Operator’s Weight – European Seat……………………………..351
Adjust Operator’s Weight – European Seat……………………………..354
Adjust Operator’s Height – European Seat……………………………..357
Adjust Operator’s Height – European Seat……………………………..359
GROUP 20 – European Roll-Gard…………………………………………..362
Exploded View – European Roll Gard…………………………………..363
GROUP 25 – German Rear Hitch……………………………………………366
GROUP 30 – 3-Point Hitch……………………………………………….370
Repair Center Lift link…………………………………………….370
Repair Adjustable Lift link…………………………………………370
Section 210 – Machine Operational Checkout…………………………………..372
Before You Start………………………………………………………374
Section 220 – Eng/Fuel Operation and tests…………………………………..386
GROUP 05 – Engine Systems Operational Checkout Procedure…………………..388
GROUP 10 – Engine System Diagnosis………………………………………394
Engine Operating Check……………………………………………..394
Engine Will Not Start Or Starts Hard…………………………………395
Engine Surges or Stalls Frequently…………………………………..395
Engine Misses……………………………………………………..395
Engine Does Not Develop Full Power…………………………………..396
Excessive Black or Gray Exhaust Check………………………………..396
White Exhause Smoke………………………………………………..396
Slow Ecceleration/Engine Will Not Accelerate/No Fast Idle Speed…………397
Abnormal Engine Noise, Loud Knock or Vibration………………………..397
Low oil Pressure…………………………………………………..397
High oil Pressure………………………………………………….397
Oil In Coolant or Coolant In Oil…………………………………….398
Engine Overheats…………………………………………………..398
Engine Runs Cold…………………………………………………..398
Engine Starts But Then Stops When Key Is Released……………………..398
Adjust Throttle Cable………………………………………………398
Test Electric Fuel Pump Flow and Pressure…………………………….399
Test Mechanical Fuel Pump Flow and Pressure…………………………..400
Bleed Fuel Injection System…………………………………………401
Fuel Injection Pump Timig – 655 and 755/756 Tractors…………………..401
Fuel Injection Pump Timimg – 855/856 and 955 Tractors………………….402
Test Cooling System………………………………………………..402
Test Radiator Cap………………………………………………….402
Cylinder Compression Pressure Test…………………………………..403
Adjust Slow and Fast Idle………………………………………….. 0
Engine Speed Specification…………………………………………. 0
Engine oil Pressure test…………………………………………… 0
Engine Lubrication Check……………………………………………388
Engine Coolant Check……………………………………………….388
Air Restriction Indicator Check……………………………………..389
Radiator Screen Check………………………………………………389
Fan and Belt Check…………………………………………………389
Throttle Lever Check……………………………………………….389
Fuel System Check………………………………………………….390
Engine Start Check…………………………………………………391
Engine oil Pressure Check…………………………………………..391
Engine Idle Speed Check…………………………………………….391
Engine Performance Check……………………………………………391
Operator Complaint Not Identified……………………………………392
Section 240 – Electrical Operation and tests…………………………………404
GROUP 05 – Electrical System Checkout……………………………………406
Instrument Panel Lamps Check………………………………………..406
Coolant Lamp and Neutral Start Check…………………………………407
Fuel Guage Check…………………………………………………..407
Lighting Circuit Check……………………………………………..407
Starting Circuit Check……………………………………………..408
PTO Safety Start Check……………………………………………..408
PTO/Seat Switch Check………………………………………………408
PTO Check…………………………………………………………408
PTO/Seat Switch Bypass Check………………………………………..409
GROUP 10 – Electrical System Diagnosis…………………………………..410
System Grounds Check……………………………………………….411
Test Battery………………………………………………………412
Test Battery Voltage……………………………………………….412
Charge Battery…………………………………………………….412
Battery Load Test………………………………………………….414
Dash lamps Test……………………………………………………414
Oil Pressure Lamp Test……………………………………………..414
Discharge Lamp Short Circuit test……………………………………415
Alternator Regulated Current Output Test……………………………..415
Alternator Unregulated Current output Test – 35 Amp……………………416
Alternator Unregulated Current Output Test – 40 Amp……………………417
Engine Preheat Circuit Check………………………………………..417
Engine Preheat Lamp Short Circuit Test……………………………….417
Engine Preheat Controller Test – 655 and 755/756………………………418
Engine Preheat Controller Test 855/856 and 955………………………..418
Coolant Temperature Lamp Check………………………………………418
Coolant Temperature Lamp Short Circuit Test…………………………..419
Transmission Neutral Start test……………………………………..419
Fuel Guage Full Test……………………………………………….420
Fuel Guage Empty Test………………………………………………420
Fuel Guage Sender In-Tank Test………………………………………420
Fuel Guage Sender bench Test………………………………………..420
Lighting Circuit No-Lights-Work Test…………………………………421
Light Switch Test………………………………………………….421
Starter Circuit Test……………………………………………….421
PTO Safety Start test………………………………………………422
Seat Switch Test…………………………………………………..422
Time Delay Control Module Delay Function Test…………………………422
PTO Magnet Voltage Test…………………………………………….423
Time Delay Control Module PTO Test…………………………………..423
TDC Input Voltage Test……………………………………………..423
PTO Indicator Lamp Test…………………………………………….424
PTO Selector Switch Test……………………………………………424
Fuel Shutoff Solenoid Test………………………………………….424
Fuel Shutoff Solenoid Pull-In Test…………………………………..425
Fuel Shutoff Solenoid Groud Circuit Test……………………………..425
Fuel Shutoff Solenoid Hold-In Test…………………………………..425
Fuel Shutoff Solenoid Voltage Test…………………………………..425
Adjust Fuel Shutoff Solenoid – 655 and 755/756………………………..426
Adjust Fuel Shutoff Solenoid – 855/856 and 955………………………..426
Starter Amp Draw Test………………………………………………426
Starter No Load Test – Running………………………………………427
Starter No Load Test – RPM………………………………………….428
Starter No Load Test – Amp Draw……………………………………..428
GROUP 15 – Electrical System Theory of Operation………………………….430
Component Locations………………………………………………..430
PTO Lamp Switch………………………………………………..430
Transmission Neutral Start Switch………………………………..430
Thermo-Start Control Module……………………………………..431
Thermo-Start Components…………………………………………431
Fuel Transfer Pump……………………………………………..432
Fuel Shutoff Solenoid…………………………………………..432
PTO Selector Switch…………………………………………….433
PTO Safety Seat Switch………………………………………….433
Time Delay Control (TDC) Module………………………………….433
PTO Magnet…………………………………………………….433
Fuel Guage Sender………………………………………………434
Oil Pressure Sender…………………………………………….434
Water Temperature Sender………………………………………..434
Warnig Light Flasher Element…………………………………….435
Electrical Circuit Operation………………………………………..436
PTO Circuit Operation…………………………………………..437
Fuel Transfer Pump Operation…………………………………….439
Engine Preheat Circuit Operation…………………………………440
Fuel Shutoff Circuit Operation…………………………………..441
Starting Circuit Operation………………………………………442
Charging Circuit Operation………………………………………443
Oil Pressure Circuit Operation…………………………………..444
Coolant Temperature Circuit Operation…………………………….445
Fuel Gauge Circuit Operation…………………………………….446
Lighting Circuit Operation………………………………………447
Electrical Schematic Diagrams……………………………………….448
Section 250 – Power Train Operation and tests………………………………..478
GROUP 05 – Power Train System Checkout…………………………………..480
Transmission and Transaxle Leak Test…………………………………480
Oil Cooler Check…………………………………………………..480
Transmission Neutral Check………………………………………….480
Transmission Neutral Return Check……………………………………481
Transmission Drive Check……………………………………………481
Transmission Differential Lock Check…………………………………481
PTO Linkage Check………………………………………………….482
Seat Switch PTO By-Pass (Override) Check……………………………..482
PTO Brake Check……………………………………………………483
Twospeed Axle Linkage Check…………………………………………483
Mechanical Front Wheel Drive (MPWD) Linkage Check……………………..483
Cruise Control Lock/Release Check……………………………………484
Cruise Control Release Check (Forward)……………………………….484
Cruise Control Release Check (Master/Park Brake)………………………484
Cruise Control Adjustment Check……………………………………..484
Forward Control Pedal Check…………………………………………485
Reverse Control Pedal Check…………………………………………485
Seat Lockout Rod Check……………………………………………..485
Operator Complaint Not Identified……………………………………485
GROUP 10 – Power Train Tests and Adjustments……………………………..486
GROUP 15 – Power Train Theory of Operation……………………………….498
Hydrostatis Transmission General Operation……………………………499
Cross-Section View – Hydro Center Section…………………………500
Neutral Operation………………………………………………501
Forward Operation………………………………………………502
Reverse Operation………………………………………………503
Foot Control Linkage Operation………………………………………504
Seat Lockout Operation……………………………………………..505
Forward Operation………………………………………………….506
Cruise Control Operation……………………………………………507
Reverse Operation………………………………………………….509
Master Brake and Turn Brake Operation………………………………..511
Master/Park Brake Operation…………………………………………512
Transaxle Operation………………………………………………..513
Mechanical Front Wheel Drive (MFWD) Operation…………………………514
Hydraulic Oil Warm-Up Procedure……………………………………..486
Adjust Transmission Neutral…………………………………………487
Adjust Transmission Neutral Return Spring…………………………….488
Power Train Drive Test……………………………………………..488
Movement in One Direction Only………………………………………488
No Movement In Either Direction……………………………………..489
Low Power/Wheels Stall Too Easily……………………………………489
Tractor Will Not Reach Full Speed……………………………………489
Transmission Operating Hot………………………………………….490
Transmission Charge Pump Pressure Test……………………………….490
Charge Relied Valve Check…………………………………………..491
Adjust Charge Relief Valve………………………………………….491
Transmission Charge Pump Flow Test…………………………………..491
Transmission Relief Valve High Pressure Test………………………….492
Adjust Transaxle Differential Lock Pedal……………………………..493
Adjust PTO Lever and PTO Selector Lever………………………………493
Adjust Transaxle Two-Speed Lever…………………………………….494
Adjust Cruise Control Lock………………………………………….494
Adjust Forward Control Pedal………………………………………..494
Adjust Reverse Control Pedal………………………………………..495
Adjust Seat/Control Pedals Lockout Rod……………………………….495
Section 260 – Steering/Brake Operation and tests……………………………..516
GROUP 05 – Steering and Brake System Checkout…………………………….518
Steering System Check………………………………………………518
Master/Park Brake Pedal Travel Check…………………………………518
Turn Brake Pedals Travel Check………………………………………519
Tractor Drive Check………………………………………………..519
Operator Complaint Not Identified……………………………………519
GROUP 10 – Steering and Brakes System Test and Adjustments…………………520
Hydraulic Oil Warm-Up Procedure……………………………………..520
Steering Relief Valve Pressure Test …………………………………521
Steering System Leakage Test………………………………………..521
Steering Valve Leakage Test…………………………………………522
Adjust Master/Park Brake Pedal Freeplay………………………………524
Adjust Turn Brake Pedals Freeplay……………………………………527
GROUP 15 – Steering and Brakes Theory of Operation………………………..528
Brakes Operation…………………………………………………..528
Steering Operation…………………………………………………529
Section 270 – Hyd Operation and tests……………………………………….530
GROUP 05 – Hydraulic System Checkout…………………………………….532
Hydraulic Pump Noise……………………………………………….532
No Hydraulic Functions/No Power Steering……………………………..533
Hydraulic Functions Are Slow………………………………………..533
Hydraulic Oil Overheats…………………………………………….533
No Hydraulic Functions/Power Steering Works Or Is Slow…………………534
Rockshaft Hitch Will Not Lift……………………………………….534
Selective Control Valves Fail or Function Erratically………………….534
Auxiliary Hydraulics Fail or Operate Slowly…………………………..535
Selective Control Valve Check……………………………………….536
Rockshaft Check……………………………………………………536
Rockshaft Freeplay Check……………………………………………536
Rockshaft Stop Valve Check………………………………………….537
Power Steering Priority Check……………………………………….537
Operator Complaint Not Identified……………………………………537
GROUP 10 – Hydraulic System Tests and Adjustments…………………………538
Hydraulic Pump Flow Test……………………………………………538
System Relief Valve Pressure Test Without SCV…………………………538
System Relief Valve Pressure Test with SCV……………………………539
Transaxle Lube Pressure Test………………………………………..540
PTO Clutch Engagement Pressure Test………………………………….540
Adjust Rockshaft Valve……………………………………………..541
Rockshaft Leakage Test……………………………………………..541
Hydraulic Pump and Flow Control Operation…………………………….542
Rockshaft Operation………………………………………………..543
Steering Valve Operation……………………………………………545
Selective Control Valve Operation……………………………………546
PTO System Operation……………………………………………….547
Hydraulic System Schematic………………………………………….549
Selective Control Valve Check……………………………………….536
Rockshaft Check……………………………………………………536
Rockshaft Freeplay Check……………………………………………536
Rockshaft Stop valve Check………………………………………….537
Power Steering Priority Check……………………………………….537
Operator Complaint Not Identified……………………………………537
GROUP 15 – Hydraulic System Theory of Operation…………………………..542
Hydraulic Troubleshooting Chart……………………………………..532
Hydraulic Pump Noise……………………………………………….532
No Hydraulic Functions/No Power Steering……………………………..533
Hydraulic Functions Are Slow………………………………………..533
No Hydraulic Functions/Power Steering Works Or Is Slow…………………534
Hydraulic Oil Overheats…………………………………………….533
Rockshaft Hitch Will Not Lift……………………………………….534
Selective Control Valves Fail or Function Erratically………………….534
Auxiliary Hydraulics Fail Or Operate Slowly…………………………..535
Index……………………………………………………………………559
A……………………………………………………………………559
B……………………………………………………………………559
C……………………………………………………………………559
D……………………………………………………………………561
E……………………………………………………………………561
F……………………………………………………………………562
G……………………………………………………………………562
H……………………………………………………………………562
I……………………………………………………………………563
L……………………………………………………………………563
M……………………………………………………………………563
P……………………………………………………………………564
R……………………………………………………………………565
S……………………………………………………………………566
T……………………………………………………………………568
V……………………………………………………………………570
W……………………………………………………………………570
3……………………………………………………………………570

IMAGES PREVIEW OF THE MANUAL:

JOHN DEERE 655 755 855 955 756 & 856 COMPACT UTILITY TRACTORS TECHNICAL MANUAL – PDF DOWNLOAD:

PLEASE NOTE:

• This is not a physical manual but a digital manual – meaning no physical copy will be couriered to you. The manual can be yours in the next 2 mins as once you make the payment, you will be directed to the download page IMMEDIATELY.
• This is the same manual used by the dealersinorder to diagnose your vehicle of its faults.
• Require some other service manual or have any queries: please WRITE to us at [email protected]

S.V