John Deere WL56 4WD Loader Diagnostic & Test Service Technical Manual TM14283X19 (PIN 1YNWL56) Electrical Wiring Diagrams PDF - MJODTM14283X19.zip

Full Service Diagnosis & Tests Technical Manual, featuring electrical wiring diagrams, for the John Deere WL56 4WD Loader (PIN: 1YNWL56_ __DXXXXXX— ), complete with shop-level guidance for servicing, troubleshooting, and overhauling the machine the way trained technicians do.

The John Deere WL56 4WD Loader (PIN: 1YNWL56_ __DXXXXXX— ) Diagnosis & Tests service manual contains:

* 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