John Deere WL56 4WD Loader T2/S2 Engines Operation and Test Service Repair Manual TM12741 PDF - MJODTM12741.zip

Full service documentation complete with electrical wiring schematics for the John Deere WL56 4WD Loader equipped with T2/S2 Engines (PIN: 1T0315SK**D229820—; 1T0315SK**C219607—), offering every technical detail needed to service, troubleshoot, fix, and rebuild the machine the way expert technicians do.

This John Deere WL56 4WD Loader with T2/S2 Engines workshop service & repair 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.

TM12741 - John Deere WL56 4WD Loader with T2/S2 Engines Technical Manual (Operation and Test).PDF

TM12741 - John Deere WL56 4WD Loader with T2/S2 Engines Technical Manual (Operation and Test).EPUB

Total Pages: 789 pages

File Format: PDF/EPUB/MOBI/AZW (PC/Mac/Android/Kindle/iPhone/iPad; bookmarked, ToC, Searchable, Printable)

Language: English

MAIN SECTIONS

Foreword

Manual Identification-READ THIS FIRST!

General Information

Safety

Diagnostics

Engine Control Unit (ECU) Diagnostic Trouble Codes

Operational Checkout Procedure

Operational Checkout Procedure

Engine

Theory of Operation

Diagnostic Information

Adjustments

Tests

Electrical System

System Information

System Diagrams

Sub-System Diagnostics

References

Power Train

Theory of Operation

Diagnostic Information

Adjustments

Tests

Hydraulic System

Theory of Operation

Diagnostic Information

Adjustments

Tests

Heating and Air Conditioning

Theory of Operation

Diagnostic Information

Tests

TABLE OF CONTENTS........1

Section 9000: General Information........16

Group 01: Safety........16

Recognize Safety Information........19

Follow Safety Instructions........20

Operate Only If Qualified........21

Wear Protective Equipment........22

Avoid Unauthorized Machine Modifications........23

Add Cab Guarding for Special Uses........24

Inspect Machine........25

Stay Clear of Moving Parts........26

Avoid High-Pressure Fluids........27

Avoid High-Pressure Oils........28

Work In Ventilated Area........29

Prevent Fires........30

Clean Debris from Machine........31

Prevent Battery Explosions........32

Handle Chemical Products Safely........33

Dispose of Waste Properly........34

Prepare for Emergencies........35

Use Steps and Handholds Correctly........36

Start Only From Operator's Seat........37

Use and Maintain Seat Belt........38

Prevent Unintended Machine Movement........39

Avoid Work Site Hazards........40

Use Special Care When Operating Loader........42

Keep Riders Off Machine........43

Avoid Backover Accidents........44

Avoid Machine Tip Over........45

Operating on Slopes........47

Operating or Traveling On Public Roads........48

Inspect and Maintain ROPS........49

Add and Operate Attachments Safely........50

Park and Prepare for Service Safely........51

Service Cooling System Safely........52

Service Tires Safely........53

Remove Paint Before Welding or Heating........54

Make Welding Repairs Safely........55

Drive Metal Pins Safely........56

Section 9001: Diagnostics........57

Group 20: Engine Control Unit (ECU) Diagnostic Trouble Codes........59

Engine Control Unit (ECU) Diagnostic Trouble Codes........59

91.03 - Primary Analog Throttle Out of Range High........57

91.04 - Engine Throttle Open or Short........57

97.03 - Water-in-Fuel Signal Out of Range High........57

97.04 - Water-in-Fuel Signal Out of Range Low........57

97.16 - Water-in-Fuel Detected........57

110.00 - Coolant Temperature Signal Extremely High........57

110.03 - Coolant Temperature Signal Out of Range High........57

110.04 - Coolant Temperature Signal Out of Range Low........57

110.15 - Coolant Temperature Signal Slightly High........57

110.16 - Coolant Temperature Signal Moderately High........57

Section 9005: Operational Checkout Procedure........102

Group 10: Operational Checkout Procedure........102

Operational Checkout........125

Section 9010: Engine........147

Group 05: Theory of Operation........147

John Deere Engine........187

Cold Start Aid System Theory of Operation—If Equipped........150

Group 10: System Diagrams........147

Engine Fuel System Component Location........155

Engine Cooling System Component Location........159

Engine Intake and Exhaust Component Location........161

Diesel Fired Coolant Heater (A8) Component Location—If Equipped........163

Group 15: Diagnostic Information........147

John Deere Engine........187

Engine Cranks/Will Not Start........147

Engine Misfires-Runs Irregularly........147

Engine Does Not Develop Full Power........147

Engine Emits Excessive White Exhaust Smoke........147

Engine Emits Excessive Black or Gray Exhaust Smoke........147

Engine Will Not Crank........147

Engine Idles Poorly........147

Abnormal Engine Noise........147

Excessive Fuel Consumption........147

Fuel in Oil........147

Low Pressure Fuel System Check........147

Group 20: Adjustments........147

John Deere Engine........187

Group 25: Tests........147

John Deere Engine........187

Section 9015: Electrical System........188

Group 05: Theory of Operation........188

Start and Charge Circuits Theory of Operation........194

Controller Area Network (CAN) Circuits Theory of Operation........198

Engine Control Unit (ECU) Circuits Theory of Operation........200

Display Unit Circuits Theory of Operation........205

Transmission Control Unit (TCU) Circuits Theory of Operation........209

Park Brake Circuit Theory of Operation........214

JDLink JDLink is a trademark of Deere & Company Circuit Theory of Operation—IF Equipped........188

Group 10: System Diagrams........188

Electrical Diagram Information........222

Electrical Schematic Symbols........226

System Functional Schematic, Wiring Diagram, and Component Location Master Legend........229

System Functional Schematic........234

Power and Ground Cables (W1) Component Location........245

Loader Frame Harness (W2) Component Location........246

Loader Frame Harness (W2) Wiring Diagram........249

Load Center Harness (W3) Component Location........251

Load Center Harness (W3) Wiring Diagram........259

Engine Harness (W6) Component Location........275

Engine Harness (W6) Wiring Diagram........282

Beacon Light Harness (W8) Component Location—If Equipped........286

Beacon Light Harness (W8) Wiring Diagram—If Equipped........287

Rear Frame Harness (W13) Component Location........288

Rear Frame Harness (W13) Wiring Diagram........290

License Plate Light Harness (W14) Component Location—If Equipped........291

License Plate Light Harness (W14) Wiring Diagram—If Equipped........292

Cab Roof Harness (W19) Component Location........293

Cab Roof Harness (W19) Wiring Diagram........297

Heater and Air Conditioner Harness (W20) Component Location........299

Heater and Air Conditioner Harness (W20) Wiring Diagram........301

Radio Harness (W23) Component Location—If Equipped........303

Radio Harness (W23) Wiring Diagram—If Equipped........304

Fuel Injector Harness (W32) Component Location........305

Fuel Injector Harness (W32) Wiring Diagram........306

Auxiliary Fuel Filter Harness (W33) Component Location—If Equipped........308

Auxiliary Fuel Filter Harness (W33) Wiring Diagram—If Equipped........309

Diesel Fired Coolant Heater Harness (W34) Component Location—If Equipped........311

Diesel Fired Coolant Heater Harness (W34) Wiring Diagram—If Equipped........312

JDLink™ Harness (W36) Component Loaction—If Equipped........314

JDLink™ Harness (W36) Wiring Diagram—If Equipped........315

Park Brake Harness (W37) Component Location (S.N. 000262—000300)........316

Park Brake Harness (W37) Wiring Diagram (S.N. 000262—000300)........317

Group 15: Diagnostic Information........189

Service ADVISOR™ Diagnostic Application........319

Service ADVISOR™ Connection Procedure........320

Reading Diagnostic Trouble Codes with Service ADVISOR™ Diagnostic Application........323

Intermittent Diagnostic Trouble Code (DTC) Diagnostics........326

Diagnostic Trouble Codes—After Machine Repair........327

Group 20: Adjustments........189

Boom Height Kickout (BHKO) Adjustment........329

Return-to-Dig Adjustment........330

Group 25: Tests........189

Electrical Component Specifications........337

Fuse and Relay Specifications........340

Alternator Test........343

Transmission Control Valve Solenoid Check........345

Clutch Cut-Off Sensor Check........346

Connector Terminal Test........347

Section 9020: Power Train........350

Group 05: Theory of Operation........350

TeamMate™ IV Axles (S.N. 000288— )........354

Power Train Operation........355

Torque Converter Operation........356

Transmission Operation........358

Transmission Operation—First Gear Forward........359

Transmission Clutch Pack Engagement and Solenoids Activated........362

Clutch Pack Operation........364

Transmission Hydraulic System........366

Transmission Control Valve Component Operation........368

Transmission Clutch Modulation Operation........370

Thermal Bypass Valve Operation........371

Axle Oscillation........373

Outboard Planetary Axle Operation (S.N. —000287)........375

Inboard Planetary Axle Operation (S.N. 000288— )........376

Differential Operation........377

Final Drive—Axle Operation........379

Service Brake Operation........381

Park Brake Operation........382

Group 10: System Diagrams........350

Transmission System Schematic—First Forward........386

Power Train Component Location........388

Transmission Component Location........390

Group 15: Diagnostic Information........350

Transmission Clutch Slippage........350

Machine Will Not Move in Either Direction........350

Machine Will Not Shift Correctly........350

Transmission System Pressure Is Low in Neutral........350

Transmission Pressure Is Low (One or Two Gear Ranges)........350

Transmission Shifts Too Slow........350

Transmission Shifts Too Fast........350

Machine Creeps in Neutral........351

Transmission Hydraulic System Overheats........351

Transmission Excessive Noise........351

Oil Aerated........351

Oil Ejected from Filler Tube........351

Machine Vibrates........351

Machine Power and Acceleration Low........351

Torque Converter Stall RPM........351

Differential Oil Level Rises........351

Differential Oil Level Low........351

Differential and Axle Noise Excessive........351

Axle Wheel Hub Face Seal Leaking (S.N. —000287)........351

Axle Overheats........351

Service Brakes Poor or Do Not Apply........351

Service Brakes Aggressive........351

Service Brakes Dragging........351

Service Brakes Lock Up........351

Service Brakes Chatter........351

Service Brake Warning Light On........351

Driveline Excessive Vibration or Noise........351

Park Brake Will Not Hold........351

Park Brake Will Not Release........480

Park Brake Overheats........351

Park Brake Light Does Not Come On........351

Park Brake Will Not Apply........351

Group 20: Adjustments........351

Service Brake Bleeding Procedure........497

External Service Brake Inspection........501

Service Brake Accumulator........505

Transmission Sensor Adjustment........506

Park Brake Adjustment........508

Group 25: Tests........351

Transmission Oil Warm-Up Procedure........512

Park Brake Pressure Test........514

Park Brake Drag Test........517

Transmission Pump Flow Test........519

Transmission System Pressure Test........521

Transmission Clutch Pressure Test........524

Transmission Element Leakage Test........527

Transmission Lube Pressure Test........530

Torque Converter-In Pressure Test........533

Torque Converter-Out Pressure Test........535

Torque Converter Relief Pressure Test........538

Torque Converter—Out Flow Test........541

Torque Converter Stall Speed Test........544

Transmission Oil Cooler Thermal Bypass Valve Temperature Test........546

Transmission Oil Cooler Thermal Bypass Valve Pressure Test........549

Transmission Oil Cooler Restriction Test........552

Axle Breather Test........555

Section 9025: Hydraulic System........558

Group 05: Theory of Operation........558

Loader Hydraulic System Operation........562

Loader Hydraulic Pump Operation........563

Hydraulic Pump Manifold Operation........565

Steering System Component Operation........570

Steering Valve Operation........571

Pilot Pressure Reducing Valve Operation........573

Service Brake Hydraulic System Operation........574

Service Brake Accumulators Operation........575

Service Brake Valve Operation........577

Pilot Control Lever Operation........579

Loader Control Valve Operation........585

Loader Control Valve With Auxiliary Function Operation—If Equipped........587

Boom Section Operation—Boom Down and Steering........589

Bucket Section Operation........591

Auxiliary Section Operation—If Equipped........593

Main Relief Valve Operation........595

Circuit Relief With Anticavitation Valve Operation........598

Anticavitation Valve Operation........598

Hydraulic Return Filter Operation........599

Group 10: System Diagrams........558

Hydraulic System Schematic........606

Steering Circuit Component Location........610

Loader Circuit Component Location........612

Loader Circuit With Auxiliary Function Component Location—If Equipped........615

Service Brake and Park Brake Component Location........617

Hydraulic Pump Manifold (Hydraulic System Component Location) (S.N. —000261)........620

Hydraulic Pump Manifold (Hydraulic System Component Location) (S.N. 000262—)........622

Group 15: Diagnostic Information........558

No Hydraulic Functions........558