John Deere WL56 4WD Loader (PIN: 1YNWL56_ __DXXXXXX— ) Diagnosis and Tests Service Technical Manual (TM14283X19)
Complete Diagnosis & Tests Technical Manual with electrical wiring diagrams for John Deere WL56 4WD Loader (PIN: 1YNWL56_ __DXXXXXX— ), with workshop information to maintain, diagnose, and rebuild like professional mechanics.
John Deere WL56 4WD Loader (PIN: 1YNWL56_ __DXXXXXX— ) workshop Diagnosis & Tests technical 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.
tm14283x19 - WL56 4WD Loader (PIN: 1YNWL56_ __DXXXXXX— ) Technical Manual (Operation and Test).pdf
tm14283x19 - WL56 4WD Loader (PIN: 1YNWL56_ __DXXXXXX— ) Technical Manual (Operation and Test).epub
PRODUCT DETAILS:
Total Pages: 730 pages
File Format: PDF/EPUB/MOBI/AZW (PC/Mac/Android/Kindle/iPhone/iPad; bookmarked, ToC, Searchable, Printable)
Language: English
TABLE OF CONTENTS......1
Section 9000: General Information......15
Group 01: Safety......15
Recognize Safety Information......18
Follow Safety Instructions......19
Operate Only If Qualified......20
Wear Protective Equipment......21
Avoid Unauthorized Machine Modifications......22
Add Cab Guarding for Special Uses......23
Inspect Machine......24
Stay Clear of Moving Parts......25
Avoid High-Pressure Fluids......26
Avoid High-Pressure Oils......27
Work In Ventilated Area......28
Prevent Fires......29
Clean Debris from Machine......30
Prevent Battery Explosions......31
Handle Chemical Products Safely......32
Dispose of Waste Properly......33
Prepare for Emergencies......34
Use Steps and Handholds Correctly......35
Start Only From Operator's Seat......36
Use and Maintain Seat Belt......37
Prevent Unintended Machine Movement......38
Avoid Work Site Hazards......39
Use Special Care When Operating Loader......41
Keep Riders Off Machine......42
Avoid Backover Accidents......43
Avoid Machine Tip Over......44
Operating on Slopes......46
Operating or Traveling On Public Roads......47
Inspect and Maintain ROPS......48
Add and Operate Attachments Safely......49
Park and Prepare for Service Safely......50
Service Cooling System Safely......51
Service Tires Safely......52
Remove Paint Before Welding or Heating......53
Make Welding Repairs Safely......54
Drive Metal Pins Safely......55
Section 9001: Diagnostics......56
Group 20: Engine Control Unit (ECU) Diagnostic Trouble Codes......58
Engine Control Unit (ECU) Diagnostic Trouble Codes......58
91.03 - Primary Analog Throttle Out of Range High......56
91.04 - Engine Throttle Open or Short......56
97.03 - Water-in-Fuel Signal Out of Range High......56
97.04 - Water-in-Fuel Signal Out of Range Low......56
97.16 - Water-in-Fuel Detected......56
110.00 - Coolant Temperature Signal Extremely High......56
110.03 - Coolant Temperature Signal Out of Range High......56
110.04 - Coolant Temperature Signal Out of Range Low......56
110.15 - Coolant Temperature Signal Slightly High......56
110.16 - Coolant Temperature Signal Moderately High......56
Section 9005: Operational Checkout Procedure......101
Group 10: Operational Checkout Procedure......101
Operational Checkout......124
Section 9010: Engine......146
Group 05: Theory of Operation......146
John Deere Engine......182
Cold Start Aid System Theory of Operation—If Equipped......149
Group 10: System Diagrams......146
Engine Fuel System Component Location......152
Engine Cooling System Component Location......154
Engine Intake and Exhaust Component Location......156
Diesel Fired Coolant Heater (A8) Component Location—If Equipped......158
Group 15: Diagnostic Information......146
John Deere Engine......182
Engine Cranks/Will Not Start......146
Engine Misfires-Runs Irregularly......146
Engine Does Not Develop Full Power......146
Engine Emits Excessive White Exhaust Smoke......146
Engine Emits Excessive Black or Gray Exhaust Smoke......146
Engine Will Not Crank......146
Engine Idles Poorly......146
Abnormal Engine Noise......146
Excessive Fuel Consumption......146
Fuel in Oil......146
Low Pressure Fuel System Check......146
Group 20: Adjustments......146
John Deere Engine......182
Group 25: Tests......146
John Deere Engine......182
Section 9015: Electrical System......183
Group 05: Theory of Operation......183
Start and Charge Circuits Theory of Operation......189
Controller Area Network (CAN) Circuits Theory of Operation......193
Engine Control Unit (ECU) Circuits Theory of Operation......195
Display Unit Circuits Theory of Operation......200
Transmission Control Unit (TCU) Circuits Theory of Operation......203
Park Brake Circuit Theory of Operation......207
JDLink™ Circuit Theory of Operation—IF Equipped......209
Group 10: System Diagrams......183
Electrical Diagram Information......215
Electrical Schematic Symbols......219
System Functional Schematic, Wiring Diagram, and Component Location Master Legend......222
System Functional Schematic......227
Power and Ground Cables (W1) Component Location......236
Loader Frame Harness (W2) Component Location......237
Loader Frame Harness (W2) Wiring Diagram......239
Load Center Harness (W3) Component Location......240
Load Center Harness (W3) Wiring Diagram......246
Engine Harness (W6) Component Location......258
Engine Harness (W6) Wiring Diagram......262
Beacon Light Harness (W8) Component Location—If Equipped......264
Beacon Light Harness (W8) Wiring Diagram—If Equipped......265
Rear Frame Harness (W13) Component Location......266
Rear Frame Harness (W13) Wiring Diagram......268
License Plate Light Harness (W14) Component Location—If Equipped......269
License Plate Light Harness (W14) Wiring Diagram—If Equipped......270
Cab Roof Harness (W19) Component Location......271
Cab Roof Harness (W19) Wiring Diagram......275
Heater and Air Conditioner Harness (W20) Component Location......277
Heater and Air Conditioner Harness (W20) Wiring Diagram......279
Radio Harness (W23) Component Location—If Equipped......280
Radio Harness (W23) Wiring Diagram—If Equipped......281
Fuel Injector Harness (W32) Component Location......282
Fuel Injector Harness (W32) Wiring Diagram......283
Auxiliary Fuel Filter Harness (W33) Component Location—If Equipped......285
Auxiliary Fuel Filter Harness (W33) Wiring Diagram—If Equipped......286
Diesel Fired Coolant Heater Harness (W34) Component Location—If Equipped......288
Diesel Fired Coolant Heater Harness (W34) Wiring Diagram—If Equipped......289
JDLink™ Harness (W36) Component Loaction—If Equipped......291
JDLink™ Harness (W36) Wiring Diagram—If Equipped......292
Fuse and Relay Specifications......293
Group 15: Diagnostic Information......184
Service ADVISOR™ Diagnostic Application......297
Service ADVISOR™ Connection Procedure......298
Reading Diagnostic Trouble Codes with Service ADVISOR™ Diagnostic Application......301
Intermittent Diagnostic Trouble Code (DTC) Diagnostics......304
Diagnostic Trouble Codes—After Machine Repair......305
Electrical Component Specifications......306
Group 20: Adjustments......184
Boom Height Kickout (BHKO) Adjustment......310
Return-to-Dig Adjustment......311
Group 25: Tests......184
Alternator Test......316
Transmission Control Valve Solenoid Check......318
Clutch Cut-Off Sensor Check......319
Connector Terminal Test......320
Section 9020: Power Train......323
Group 05: Theory of Operation......323
TeamMate™ IV Axles......327
Power Train Operation......328
Torque Converter Operation......329
Transmission Operation......331
Transmission Operation—First Gear Forward......332
Transmission Clutch Pack Engagement and Solenoids Activated......335
Clutch Pack Operation......337
Transmission Hydraulic System......339
Transmission Control Valve Component Operation......341
Transmission Clutch Modulation Operation......343
Thermal Bypass Valve Operation......344
Axle Oscillation......346
Inboard Planetary Axle Operation......347
Differential Operation......348
Final Drive—Axle Operation......349
Service Brake Operation......350
Park Brake Operation......351
Group 10: System Diagrams......323
Transmission System Schematic—First Forward......355
Power Train Component Location......357
Transmission Component Location......358
Group 15: Diagnostic Information......323
Transmission Clutch Slippage......323
Machine Will Not Move in Either Direction......323
Machine Will Not Shift Correctly......323
Transmission System Pressure Is Low in Neutral......323
Transmission Pressure Is Low (One or Two Gear Ranges)......323
Transmission Shifts Too Slow......323
Transmission Shifts Too Fast......323
Machine Creeps in Neutral......323
Transmission Hydraulic System Overheats......324
Transmission Excessive Noise......324
Oil Aerated......324
Oil Ejected from Filler Tube......324
Machine Vibrates......324
Machine Power and Acceleration Low......324
Torque Converter Stall RPM......324
Differential Oil Level Rises......324
Differential Oil Level Low......324
Differential and Axle Noise Excessive......324
Axle Overheats......324
Service Brakes Poor or Do Not Apply......324
Service Brakes Aggressive......324
Service Brakes Dragging......324
Service Brakes Lock Up......324
Service Brakes Chatter......324
Service Brake Warning Light On......324
Driveline Excessive Vibration or Noise......324
Park Brake Will Not Hold......324
Park Brake Will Not Release......446
Park Brake Overheats......324
Park Brake Light Does Not Come On......324
Park Brake Will Not Apply......324
Group 20: Adjustments......324
Service Brake Bleeding Procedure......460
External Service Brake Inspection......462
Service Brake Accumulator......465
Transmission Sensor Adjustment......466
Park Brake Adjustment......468
Group 25: Tests......324
Transmission Oil Warm-Up Procedure......472
Park Brake Pressure Test......474
Park Brake Drag Test......477
Transmission Pump Flow Test......479
Transmission System Pressure Test......481
Transmission Clutch Pressure Test......484
Transmission Element Leakage Test......487
Transmission Lube Pressure Test......490
Torque Converter-In Pressure Test......493
Torque Converter-Out Pressure Test......495
Torque Converter Relief Pressure Test......497
Torque Converter—Out Flow Test......500
Torque Converter Stall Speed Test......503
Transmission Oil Cooler Thermal Bypass Valve Temperature Test......505
Transmission Oil Cooler Thermal Bypass Valve Pressure Test......508
Transmission Oil Cooler Restriction Test......511
Axle Breather Test......514
Section 9025: Hydraulic System......516
Group 05: Theory of Operation......516
Loader Hydraulic System Operation......520
Loader Hydraulic Pump Operation......521
Hydraulic Pump Manifold Operation......523
Steering System Component Operation......526
Steering Valve Operation......527
Pilot Pressure Reducing Valve Operation......529
Service Brake Hydraulic System Operation......530
Service Brake Accumulators Operation......531
Service Brake Valve Operation......533
Pilot Control Lever Operation......535
Loader Control Valve Operation......541
Loader Control Valve with Auxiliary Function Operation—If Equipped......543
Boom Section Operation-Boom Down and Steering......545
Bucket Section Operation......547
Auxiliary Section Operation—If Equipped......549
Main Relief Valve Operation......551
Circuit Relief With Anticavitation Valve Operation......554
Anticavitation Valve Operation......554
Hydraulic Return Filter Operation......555
Group 10: System Diagrams......516
Hydraulic System Schematic......558
Steering Circuit Component Location......560
Loader Circuit Component Location......562
Loader Circuit with Auxiliary Function Component Location—If Equipped......564
Service Brake and Park Brake Component Location......566
Hydraulic Pump Manifold (Hydraulic System Component Location)......568
Group 15: Diagnostic Information......516
No Hydraulic Functions......516
Hydraulic Functions Slow......516
Loader Hydraulic Pump Noisy......516
Loader/Steering Hydraulic Pump Noisy......517
No Steering Function......517
Boom Float Function Not Working......517
One Hydraulic Function Not Working......517
Hydraulic Function Drifts Down......517
Boom Down Does Not Work (Engine Off)......517
Oil Overheats......517
Hydraulic Oil Foams......517
Constant Steering Required to Maintain Straight Travel......517
Slow Steering Wheel Movement Will Not Cause Frame Movement......517
Steering Wheel Turns Without Resistance and Causes No Frame Movement......517
Steering Erratic......517
Steering Wheel Free Play......517
Orbital Steering Valve Binds or Locks Up......517
Steering Wheel Turns By Itself......517
Machine Turns in Opposite Direction as Steering Wheel......517
Steering Wheel Kickback......517
Steering Jerky......517
Group 20: Adjustments......517
Pilot Control Lever Adjustment......621
Accumulator Precharge......623
Group 25: Tests......517
Hydraulic Oil Sampling Procedure......626
Hydraulic Oil Warm-Up Procedure......627
Vacuum Pump Installation......629
Hydraulic System Pressure and Accumulators Discharge......630
JT02156A Digital Pressure and Temperature Analyzer Kit Installation......631
Steering/Loader Hydraulic Pump Flow Test......635
Loader Hydraulic Pump Flow Test......635
Main Relief Valve Pressure Test......639
Circuit Relief with Anticavitation Valve Pressure Test......643
Loader Cylinder Drift Test......647
Boom, Bucket, and Steering Cylinder Leakage Test......650
Hydraulic Oil Cooler Restriction Test......652
Orbital Steering Valve Leakage Test......655
Steering Cylinder Drift Test......659
Pilot Control Valve Pressure Test......663
Pilot Pressure Reducing Valve Pressure Test......669
Cycle Time Test......672
Service Brake Accumulator Gas Precharge and Low Brake Pressure Warning Test......673
Service Brake Valve Pressure Test......676
Service Brake Valve Leakage Test......679
Hydraulic Oil Filter Inspection Procedure......683
Section 9031: Heating and Air Conditioning......684
Group 05: Theory of Operation......684
Air Conditioning System Cycle of Operation......687
Group 10: System Diagrams......684
Air Conditioner and Heater Component Location......690
Group 15: Diagnostic Information......684
Air Conditioning System Does Not Operate......684
Air Conditioner Does Not Cool Interior of Cab......684
Air Conditioning Runs Constantly, Too Cold......684
Heater System Does Not Operate......684
Heater Does Not Warm Interior of Cab......684
Interior Windows Continue to Fog......684
Group 25: Tests......684
Refrigerant Cautions and Proper Handling......715
R134a Refrigerant Cautions......716
R134a Oil Charge Capacity......717
R134a Refrigerant Charge Capacity......718
Refrigerant Hoses and Tubing Inspection......719
R134a Air Conditioning System Test......720
Operating Pressure Diagnostic Chart......723
Air Conditioning High/Low Pressure Switch Test......725
Freeze Control Switch Test......727
Refrigerant Leak Testing......728
John Deere WL56 4WD Loader (PIN: 1YNWL56_ __DXXXXXX— ) Diagnosis and Tests Service Technical Manual (TM14283X19)
