Caterpillar 515 and 525 Wheel Skidders Repair Service Manual

Model: 
Price: US$ 65.00

Complete service repair manual with Electrical Wiring Diagrams for Caterpillar 515 and 525 Wheel Skidders, with all the technical information to maintain, diagnose, repair, rebuild like professional mechanics.

Caterpillar 515 (4LR) and 525 (1DN) Wheel Skidders workshop service repair manual includes:
* Numbered table of contents easy to use so that you can find the information you need fast.
* Detailed sub-steps expand on repair procedure information
* Numbered instructions guide you through every repair procedure step by step.
* Troubleshooting and electrical service procedures are combined with detailed wiring diagrams for ease of use.
* Notes, cautions and warnings throughout each chapter pinpoint critical information.
* Bold figure number help you quickly match illustrations with instructions.
* Detailed illustrations, drawings and photos guide you through every procedure.
* Enlarged inset helps you identify and examine parts in detail.

WHEEL-TYPE SKIDDER
Model    Prefix
515 WHEEL SKIDDER     4LR
525 WHEEL SKIDDER     1DN

PRODUCT DETAILS:
Total Pages: 1,596 pages
File Format: PDF (Internal Links, Bookmarked, Table of Contents, Searchable, Printable, high quality)
Language: English

RENR2147 - Schematic (Caterpillar 515 and 525 Wheel Skidders Electrical System).pdf
RENR3057 - Specifications (515, 525, 525B, 525C, 535B, 535C, 545 and 545C Wheel Skidders Winch).pdf
RENR3057 - Systems Operation (515, 525, 525B, 525C, 535B, 535C, 545 and 545C Wheel Skidders Winch).pdf
RENR3057 - Testing and Adjusting (515, 525, 525B, 525C, 535B, 535C, 545 and 545C Wheel Skidders Winch).pdf
SENR1360 - Schematic (Caterpillar 515 & 525 Wheel Skidders Electrical System).pdf
SENR1361 - Schematic (Caterpillar 515 & 525 Wheel Skidders Electrical System).pdf
SENR6684 - Specifications (515 Wheel Skidder and 525 Wheel Skidder Power Train).pdf
SENR6685 - Systems Operation (515 Wheel Skidder and 525 Wheel Skidder Power Train).pdf
SENR6685 - Testing and Adjusting  (515 Wheel Skidder and 525 Wheel Skidder Power Train).pdf
SENR6686 - Systems Operation (515 Wheel Skidder and 525 Wheel Skidder Transmission and Grapple Electronic Control System).pdf
SENR6686 - Testing and Adjusting (515 Wheel Skidder and 525 Wheel Skidder Transmission and Grapple Electronic Control System).pdf
SENR6690 - Specifications (515 Wheel Skidder and 525 Wheel Skidder Braking System).pdf
SENR6691 - Systems Operation (515 Wheel Skidder and 525 Wheel Skidder Braking System).pdf
SENR6691 - Testing and Adjusting (515 Wheel Skidder and 525 Wheel Skidder Braking System).pdf
SENR6692 - Specifications (515 Wheel Skidder and 525 Wheel Skidder Hydraulic and Steering System).pdf
SENR6693 - Disassembly and Assembly (515 and 525 Wheel Skidders Machine Systems).pdf
SENR6694 - Schematic (Caterpillar 525 Wheel Skidder Electrical System).pdf
SENR6696 - Systems Operation (515 Wheel Skidder and 525 Wheel Skidder Hydraulic and Steering System).pdf
SENR6696 - Testing and Adjusting (515 Wheel Skidder and 525 Wheel Skidder Hydraulic and Steering System).pdf
SENR6718 - Schematic (515 and 525 Wheel Skidders Steering and Hydraulic System) (For Serial Numbers 1DN1-UP 4LR1-UP).pdf

MAIN SECTIONS
RENR2147 - Schematic (Caterpillar 515 and 525 Wheel Skidders Electrical System)......3
  Collage......4
  Main......19
RENR3057 - Specifications (515, 525, 525B, 525C, 535B, 535C, 545 and 545C Wheel Skidders Winch)......21
  Gear Pump (Differential Lock) (Winch)......22
  Winch Drive Shaft......24
  Winch Hydraulic Control......26
RENR3057 - Systems Operation (515, 525, 525B, 525C, 535B, 535C, 545 and 545C Wheel Skidders Winch)......28
  Gear Pump (Differential Lock) (Winch)......29
  General Information......30
  Winch Hydraulic Control - Mechanically Controlled......33
  Winch Hydraulic System - Mechanically Controlled......36
RENR3057 - Testing and Adjusting (515, 525, 525B, 525C, 535B, 535C, 545 and 545C Wheel Skidders Winch)......44
  Bevel Gear and Pinion - Adjust......45
  Drum Bearing (Cable) - Adjust......55
  Machine Preparation for Troubleshooting......58
  Visual Inspection......61
  Winch Lubrication Oil Flow - Test......62
  Winch Pressures - Test and Adjust......68
  Winch Troubleshooting......83
SENR1360 - Schematic (Caterpillar 515 & 525 Wheel Skidders Electrical System)......87
  Collage......88
  Main......111
SENR1361 - Schematic (Caterpillar 515 & 525 Wheel Skidders Electrical System)......113
  Collage......114
  Main......139
SENR6684 - Specifications (515 Wheel Skidder and 525 Wheel Skidder Power Train)......141
  Axle Housing......143
  Bevel Gear and Pinion......145
  Brake and Planetary......148
  Cab Mounting......154
  Clutch (First and Third)......155
  Clutch (Forward High and Forward Low)......157
  Clutch (Reverse and Second)......159
  Differential Lock Manifold and Relief Valve......161
  Differential Lock Oil Filter......165
  Differential Oil Pressure Switch......166
  Differential......167
  Drive Shaft (Machine)......169
  Drive Shaft (Winch)......171
  Front Axle Support......173
  Gear Pump (Differential Lock)......175
  Gear Pump (Winch and Differential Lock)......176
  Output Transfer Gears......178
  Rim Group......182
  Torque Converter Oil Temperature Sender......183
  Torque Converter......184
  Transmission Case......189
  Transmission Clutch Solenoid Valve......201
  Transmission Dump Valve......203
  Transmission Hydraulic Control......205
  Transmission Oil Filter Bypass Switch......208
  Transmission Oil Filter......211
  Transmission Oil Pump......214
  Transmission Oil Temperature Switch......217
  Transmission Selector and Pressure Control Valve......218
  Transmission......220
  Window Wiper and Wiper Motor......222
SENR6685 - Systems Operation (515 Wheel Skidder and 525 Wheel Skidder Power Train)......224
  Axle (Front and Rear)......225
  Differential Lock ......227
  Differential Lock......233
  Differential......241
  Flow Control Valve......247
  General Information......249
  Torque Converter......252
  Transmission ......256
  Transmission Dump Valve......277
  Transmission Electrical System......280
  Transmission Hydraulic Control......284
  Transmission Hydraulic System......301
  Transmission Lubrication......304
  Transmission Oil Filter......305
  Transmission Oil Pump......309
  Transmission......310
SENR6685 - Testing and Adjusting  (515 Wheel Skidder and 525 Wheel Skidder Power Train)......329
  Axle Housing and Bearing Preload - Adjust......330
  Differential Backlash and Bearings - Adjust......333
  Differential Pinion Preload - Adjust......339
  Machine Preparation for Troubleshooting......342
  Power Train Troubleshooting......345
  Relief Valve (Differential Lock) - Test and Adjust......365
  Relief Valve Pressure (Front Differential Lock and Rear Differential Lock) - Test and Adjust......367
  Solenoid Valve (Transmission Clutch) - Test......370
  Torque Converter Stall - Test......374
  Transmission Clutch Running Clearance - Check......376
  Transmission Pressures - Test and Adjust......379
  Visual Inspection......384
  Winch Lubrication Oil Flow - Test......387
  Winch Pressures - Test and Adjust......391
SENR6686 - Systems Operation (515 Wheel Skidder and 525 Wheel Skidder Transmission and Grapple Electronic Control System)......402
  Backup Alarm......403
  CAT Data Link......405
  Caterpillar Monitoring System......407
  Diagnostic Operation......409
  Electronic Control Module (Transmission and Grapple)......411
  General Information......421
  Grapple Electronic Control Operation......424
  Relay (Backup Alarm)......426
  Relay (Grapple Solenoid Return)......427
  Sensors......429
  Solenoid Valve (Clutch)......432
  Solenoid Valve (Grapple)......436
  Start Relay......438
  Start Switch (Key)......442
  Switches......446
  Transmission Electronic Control Operation......454
SENR6686 - Testing and Adjusting (515 Wheel Skidder and 525 Wheel Skidder Transmission and Grapple Electronic Control System)......464
  CID 0168 FMI 00 Electrical System Voltage Above Normal Range - Test......468
  CID 0168 FMI 01 Electrical System Voltage Below Normal Range - Test......469
  CID 0417 FMI 03 Relay (Grapple Solenoid Return) Voltage Above Normal - Test......471
  CID 0417 FMI 06 Relay (Grapple Solenoid Return) Current Above Normal - Test......474
  CID 0417 FMI 07 Relay (Grapple Solenoid Return) Improper Mechanical Response - Test......477
  CID 0444 FMI 03 Magnetic Switch (Start Relay) Voltage Above Normal - Test ......480
  CID 0444 FMI 03 Magnetic Switch (Start Relay) Voltage Above Normal - Test......483
  CID 0444 FMI 05 Magnetic Switch (Start Relay) Current Below Normal - Test......486
  CID 0444 FMI 06 Magnetic Switch (Start Relay) Current Above Normal - Test......492
  CID 0449 FMI 02 Control Switch (Grapple Rotation) Incorrect Signal - Test......500
  CID 0450 FMI 02 Control Switch (Tong Open, Tong Close) Incorrect Signal - Test......504
  CID 0451 FMI 03 Solenoid Valve (Grapple Clockwise Rotation) Voltage Above Normal - Test......508
  CID 0451 FMI 05 Solenoid Valve (Grapple Clockwise Rotation) Current Below Normal - Test......511
  CID 0451 FMI 06 Solenoid Valve (Grapple Clockwise Rotation) Current Above Normal - Test......514
  CID 0452 FMI 03 Solenoid Valve (Grapple Counterclockwise Rotation) Voltage Above Normal - Test......517
  CID 0452 FMI 05 Solenoid Valve (Grapple Counterclockwise Rotation) Current Below Normal - Test......520
  CID 0452 FMI 06 Solenoid Valve (Grapple Counterclockwise Rotation) Current Above Normal - Test......523
  CID 0453 FMI 03 Solenoid Valve (Tong Open) Voltage Above Normal - Test ......526
  CID 0453 FMI 03 Solenoid Valve (Tong Open) Voltage Above Normal - Test......529
  CID 0453 FMI 05 Solenoid Valve (Tong Open) Current Below Normal - Test......532
  CID 0453 FMI 06 Solenoid Valve (Tong Open) Current Above Normal - Test......535
  CID 0454 FMI 03 Solenoid Valve (Tong Close) Voltage Above Normal - Test......538
  CID 0454 FMI 05 Solenoid Valve (Tong Close) Current Below Normal - Test......541
  CID 0454 FMI 06 Solenoid Valve (Tong Close) Current Above Normal - Test......544
  CID 0455 FMI 00 Pressure Sensor (Tong Close) Above Normal Range - Test......547
  CID 0455 FMI 01 Pressure Sensor (Tong Close) Below Normal Range - Test......551
  CID 0621 FMI 02 Push Button Switch (Transmission Downshift) Incorrect Signal - Test......556
  CID 0622 FMI 02 Push Button Switch (Transmission Upshift) Incorrect Signal - Test......559
  CID 0623 FMI 02 Rocker Switch (Transmission Direction) Incorrect Signal - Test......562
  CID 0641 FMI 03 Solenoid Valve 1 (Direction Clutch) Voltage Above Normal - Test......565
  CID 0641 FMI 05 Solenoid Valve 1 (Direction Clutch) Current Below Normal - Test......569
  CID 0641 FMI 06 Solenoid Valve 1 (Direction Clutch) Current Above Normal - Test......572
  CID 0642 FMI 03 Solenoid Valve 2 (Direction Clutch) Voltage Above Normal - Test......575
  CID 0642 FMI 05 Solenoid Valve 2 (Direction Clutch) Current Below Normal - Test......579
  CID 0642 FMI 06 Solenoid Valve 2 (Direction Clutch) Current Above Normal - Test......582
  CID 0643 FMI 03 Solenoid Valve 3 (Direction Clutch) Voltage Above Normal - Test......585
  CID 0643 FMI 05 Solenoid Valve 3 (Direction Clutch) Current Below Normal - Test......589
  CID 0643 FMI 06 Solenoid Valve 3 (Direction Clutch) Current Above Normal - Test......592
  CID 0644 FMI 03 Solenoid Valve 4 (Speed Clutch) Voltage Above Normal - Test......595
  CID 0644 FMI 05 Solenoid Valve 4 (Speed Clutch) Current Below Normal - Test......599
  CID 0644 FMI 06 Solenoid Valve 4 (Speed Clutch) Current Above Normal - Test......602
  CID 0645 FMI 03 Solenoid Valve 5 (Speed Clutch) Voltage Above Normal - Test......605
  CID 0645 FMI 05 Solenoid Valve 5 (Speed Clutch) Current Below Normal - Test......609
  CID 0645 FMI 06 Solenoid Valve 5 (Speed Clutch) Current Above Normal - Test......612
  CID 0646 FMI 03 Solenoid Valve 6 (Speed Clutch) Voltage Above Normal - Test......615
  CID 0646 FMI 05 Solenoid Valve 6 (Speed Clutch) Current Below Normal - Test......619
  CID 0646 FMI 06 Solenoid Valve 6 (Speed Clutch) Current Above Normal - Test......622
  CID 0687 FMI 02 Option Code Incorrect Signal - Test......625
  Electrical Components And Connector Locations......627
  Electrical Connector - Inspect......630
  Electrical General Information......632
  Electrical Service Tools......634
  Electronic Control Module (Transmission and Grapple) - Replace......636
  Glossary of Electrical Terms......637
  Machine Preparation for Troubleshooting......639
  System Schematic 1......642
  System Schematic 2......645
  Troubleshooting Backup Alarm......648
  Troubleshooting Key Start Switch......655
  Troubleshooting Pressure Switch (Parking Brake Oil)......659
  Troubleshooting Service Codes......662
  Troubleshooting Start Relay......665
  Troubleshooting Switch (Neutral Lock)......671
  Troubleshooting Switch (Tong Auto_Manual)......673
  Using Caterpillar Electronic Technician (ET) To Determine Service Codes......676
  Using Caterpillar Monitoring System to Determine Service Codes......678
  Using Electronic Control Analyzer Programmer (ECAP) to Determine Service Codes......682
  Visual Inspection......684
SENR6690 - Specifications (515 Wheel Skidder and 525 Wheel Skidder Braking System)......687
  Accumulator Charging Valve (Brake)......688
  Brake Accumulator (Charged)......689
  Brake Accumulator (Uncharged)......693
  Brake Control (Parking Brake)......695
  Brake Control Valve (Parking)......696
  Brake Control Valve (Service)......697
  Foot Brake Control (Pedal)......699
  Parking Brake Actuator......700
  Parking Brake......701
  Pressure Switch (Brake Accumulator Charge)......702
  Pressure Switch (Parking Brake Oil)......703
  Priority Valve......704
  Service Brakes......707
SENR6691 - Systems Operation (515 Wheel Skidder and 525 Wheel Skidder Braking System)......713
  Accumulator Charging Valve (Brake)......714
  Brake Accumulator......716
  Brake Control Valve (Parking)......719
  Brake Control Valve (Service)......723
  General Information......727
  Monitoring System......731
  Parking Brake......734
  Pressure Switch (Brake Accumulator Charge)......737
  Pressure Switch (Parking Brake Oil)......739
  Priority Valve (Brake)......741
  Service Brakes......748
SENR6691 - Testing and Adjusting (515 Wheel Skidder and 525 Wheel Skidder Braking System)......750
  Accumulator Charging Valve (Brake) - Test and Adjust......751
  Brake Accumulator - Test and Charge......756
  Brake System Air - Purge......763
  Braking System Troubleshooting......765
  Hydraulic Oil Contamination - Test......769
  Machine Preparation for Troubleshooting......771
  Parking Brake - Manual Release......774
  Parking Brake - Test......776
  Parking Brake Control - Adjust......778
  Parking Brake System Pressure - Test......782
  Priority Valve (Brake) - Test and Adjust......784
  Service Brake Control - Adjust......791
  Service Brake System Pressure - Test......797
  Service Brake Wear Indicator - Check......800
  Service Brakes - Test......805
  Visual Inspection......807
SENR6692 - Specifications (515 Wheel Skidder and 525 Wheel Skidder Hydraulic and Steering System)......808
  Articulated Hitch......809
  Bank Valve (Four) (Grapple)......813
  Bank Valve (Six) (Grapple)......815
  Bank Valve (Three) (Grapple)......817
  Breaker Relief Valve (Hydraulic Tank)......819
  Check Valve (Pilot)......820
  Control Valve (Decking Blade)......821
  Control Valve (Grapple Arch and Grapple Boom)......823
  Control Valve (Grapple Rotator)......825
  Control Valve (Grapple Swing Boom)......827
  Control Valve (Grapple Tong)......829
  Control Valve (Hydraulic Retrieval Device)......833
  Control Valve (Steering)......835
  Control Valve (Steering, Decking Blade)......837
  Decking Blade......841
  Hydraulic Tank and Filter......845
  Lift Cylinder (Decking Blade)......851
  Main Control Valve (Hydraulic Retrieval Device)......853
  Pilot Valve (Grapple)......855
  Piston Pump (Implement, Pilot, Steering, Brake)......861
  Pressure Sensor (Tong Oil)......866
  Pressure Switch (Primary Steering Oil and Secondary Steering Oil)......870
  Priority Valve (Brake)......872
  Secondary Steering Pump and Electric Motor......875
  Selector and Pressure Control Valve (Grapple)......877
  Solenoid Valve (Hydraulic Retrieval Device)......879
  Steering Control Linkage......881
  Steering Cylinder......882
  Temperature Sender (Hydraulic Oil)......883
SENR6693 - Disassembly and Assembly (515 and 525 Wheel Skidders Machine Systems)......884
  Accumulator Charging Valve (Brake) - Remove and Install......888
  Bank Valve (Four) (Grapple) - Assemble......892
  Bank Valve (Four) (Grapple) - Disassemble......904
  Bank Valve (Four) (Grapple) - Install......916
  Bank Valve (Four) (Grapple) - Remove......920
  Bank Valve (Six) (Grapple) - Assemble......925
  Bank Valve (Six) (Grapple) - Disassemble......939
  Bank Valve (Six) (Grapple) - Install......953
  Bank Valve (Six) (Grapple) - Remove......955
  Bank Valve (Two) (Decking Blade, Steering) - Disassemble......958
  Brake Accumulator - Remove and Install......966
  Brake Control Valve (Parking) - Remove and Install......969
  Brake Control Valve (Service) - Remove and Install......972
  Cab - Install......976
  Cab - Remove......983
  Control Valve (Steering and Decking Blade) - Assemble......991
  Control Valve (Steering and Decking Blade) - Install......1000
  Control Valve (Steering and Decking Blade) - Remove......1003
  Control Valve (Winch) - Assemble - C-500 Series Winch......1006
  Control Valve (Winch) - Disassemble - C-500 Series Winch......1009
  Control Valve (Winch) - Install - 400 Series Winch......1012
  Control Valve (Winch) - Install - C-500 Series Winch......1014
  Control Valve (Winch) - Remove - 400 Series Winch......1016
  Control Valve (Winch) - Remove - C-500 Series Winch......1018
  Cylinder (Grapple Arch) - Remove and Install......1021
  Cylinder (Grapple Boom) - Remove and Install......1025
  Decking Blade - Remove and Install......1028
  Evaporator Coil - Remove and Install......1033
  Fairlead Roller - Remove and Install......1037
  Floorplate - Remove and Install......1042
  Gear Pump (Winch and Differential Lock) - Assemble......1045
  Gear Pump (Winch and Differential Lock) - Disassemble......1050
  Gear Pump (Winch and Differential Lock) - Install......1055
  Gear Pump (Winch and Differential Lock) - Remove......1056
  Grapple - Remove and Install......1058
  Grapple Arch (Dual Function) - Remove and Install......1063
  Grapple Arch (Single Function) - Remove and Install......1068
  Grapple Boom (Dual Function) - Remove and Install......1073
  Grapple Control Handle and Pilot Valve (Grapple) - Install......1079
  Grapple Control Handle and Pilot Valve (Grapple) - Remove......1082
  Heater Coil - Remove and Install......1085
  Hydraulic Oil Cooler - Remove and Install......1090
  Hydraulic Retrieval Device (Grapple Equipped) - Remove and Install......1095
  Hydraulic Retrieval Device (HRD) Control Valve - Assemble......1101
  Hydraulic Retrieval Device (HRD) Control Valve - Disassemble......1105
  Hydraulic Retrieval Device (HRD) Control Valve - Install......1109
  Hydraulic Retrieval Device (HRD) Control Valve - Remove......1112
  Hydraulic Retrieval Device (HRD) Solenoid Valve - Remove and Install......1116
  Hydraulic Retrieval Device (Swing Boom Equipped) - Remove and Install......1120
  Hydraulic Tank - Install......1125
  Hydraulic Tank - Remove......1130
  Lift Cylinder (Decking Blade) - Remove and Install......1135
  Main Frames - Connect......1140
  Main Frames - Separate......1149
  Parking Brake - Remove and Install......1158
  Parking Brake Actuator - Remove and Install......1163
  Pilot Valve (Grapple) - Assemble......1166
  Pilot Valve (Grapple) - Disassemble......1169
  Piston Pump (Implement, Pilot, Steering, Brake) - Assemble......1172
  Piston Pump (Implement, Pilot, Steering, Brake) - Disassemble......1179
  Piston Pump (Implement, Pilot, Steering, Brake) - Install......1189
  Piston Pump (Implement, Pilot, Steering, Brake) - Remove......1192
  Refrigerant Accumulator - Remove and Install......1195
  Seat - Remove and Install......1199
  Secondary Steering Pump and Electric Motor - Remove and Install......1205
  Selector and Pressure Control Valve (Grapple) - Remove and Install......1209
  Steering Cylinder - Remove and Install......1212
  Steering Frame Lock - Separate and Connect......1216
  Steering Wheel - Remove and Install......1219
  Sweeps - Remove and Install......1224
  Swing Boom Saddle - Remove and Install......1227
  System Pressure - Release......1232
  Winch - Assemble - C-501 and C-502 Winches......1234
  Winch - Assemble - C-503 Winch......1257
  Winch - Disassemble - C-501 and C-502 Winches......1278
  Winch - Disassemble - C-503 Winch......1297
  Winch - Install - 400 Series Winch......1313
  Winch - Install - C-500 Series Winch......1317
  Winch - Remove - 400 Series Winch......1320
  Winch - Remove - C-500 Series Winch......1324
  Winch Brake - Assemble - C-500 Series Winch......1328
  Winch Brake - Disassemble - C-500 Series Winch......1332
  Winch Brake - Install - C-500 Series Winch......1334
  Winch Brake - Remove - C-500 Series Winch......1337
  Winch Drive Shaft - Install......1339
  Winch Drive Shaft - Remove......1343
  Winch Input Gear (Pinion) - Assemble - C-500 Series Winch......1348
  Winch Input Gear (Pinion) - Disassemble - C-500 Series Winch......1350
  Winch Input Gear (Pinion) - Install - C-500 Series Winch......1352
  Winch Input Gear (Pinion) - Remove - C-500 Series Winch......1359
  Window Wiper and Wiper Motor (Front) - Remove and Install......1361
  Window Wiper and Wiper Motor (Rear) - Remove and Install......1365
SENR6694 - Schematic (Caterpillar 525 Wheel Skidder Electrical System)......1369
  Collage......1370
  Mian......1378
SENR6696 - Systems Operation (515 Wheel Skidder and 525 Wheel Skidder Hydraulic and Steering System)......1380
  Bank Valve (Four) (Grapple)......1381
  Bank Valve (Six) (Grapple)......1387
  Control Valve (Decking Blade)......1390
  Control Valve (Grapple Arch)......1398
  Control Valve (Grapple Boom)......1406
  Control Valve (Grapple Rotator)......1414
  Control Valve (Grapple Swing Boom)......1421
  Control Valve (Grapple Tong)......1429
  Control Valve (Hydraulic Retrieval Device)......1444
  Control Valve (Steering)......1452
  Control Valve (Steering, Decking Blade)......1462
  General Information......1465
  Hydraulic Tank and Filter......1472
  Pilot Valve (Grapple)......1474
  Piston Pump (Implement, Pilot, Steering, Brake)......1478
  Pressure Sensor (Tong Oil)......1488
  Priority Valve (Brake)......1491
  Secondary Steering Pump and Electric Motor......1495
  Secondary Steering System......1497
  Selector and Pressure Control Valve (Grapple)......1503
  Signal Resolver Network......1505
SENR6696 - Testing and Adjusting (515 Wheel Skidder and 525 Wheel Skidder Hydraulic and Steering System)......1508
  Control Valve (Grapple Rotate Motor) - Test and Adjust......1509
  Grapple Cylinder - Isolate for Drift Check......1512
  Grapple Cylinder Speed - Check......1516
  Hydraulic Oil Contamination - Test......1519
  Hydraulic and Steering System Troubleshooting......1521
  Lift Cylinder (Decking Blade) - Isolate for Drift Check......1530
  Lift Cylinder Speed (Decking Blade) - Check......1533
  Machine Preparation for Troubleshooting......1535
  Pilot System Pressure - Test......1538
  Piston Pump (Implement, Pilot, Steering, Brake) - Test and Adjust......1542
  Pressure Sensor (Tong Oil) - Check......1549
  Pressure and Flow Compensator Valve - Adjust......1553
  Pump Flow - Test......1557
  Relief Valve (Brake Priority) - Test and Adjust......1560
  Relief Valve (Line) - Test and Adjust......1565
  Relief Valve (Steering Cylinder Crossover) - Test and Adjust......1574
  Resolver Valve - Test......1581
  Steering Control Linkage - Adjust......1586
  Steering Time - Check......1588
  System Pressure - Release......1590
  Visual Inspection......1592
SENR6718 - Schematic (515 and 525 Wheel Skidders Steering and Hydraulic System) (For Serial Numbers 1DN1-UP 4LR1-UP)......1595

Caterpillar 515 and 525 Wheel Skidders Repair Service Manual

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