Complete service diagnostics manual with Electrical Wiring Diagrams for John Deere 4WD Loaders 744J, 824J, with all the shop information to maintain, diagnose, and service like professional mechanics.

John Deere 4WD Loaders 744J, 824J workshop Operation and Test Service 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.

TM2083 - John Deere 4WD Loaders 744J, 824J Technical Manual (Operation and Tes).pdf
tm10202 - John Deere Chargeurs 744J et 824J.pdf
tm10290 - John Deere Cargadoras 744J y 824J.pdf

Total Pages: 1,241 pages
File Format: PDF (bookmarked, ToC, Searchable, Printable)
Language: English Spanish French
Category: Operation and Test
Published on 2017/07/28

MAIN SECTIONS
 Foreword
   Technical Information Feedback Form
   General Information
      Safety Information
   Operational Checkout Procedure
      Operational Checkout Procedure
   Engine
      Theory of Operation
      Diagnostic Information
      Tests
   Electrical System-744J And 824J (S.N. -590067)
      System Information
      System Diagrams
      Sub-System Diagnostics
      References
   Electrical System-744J And 824J (S.N. 590068-600915)
      System Information
      System Diagrams
      Sub-System Diagnostics
      References
   Electrical System-744J And 824J (S.N. 600916- )
      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
      Test
   Heating And A/C
      Theory Of Operation
      Diagnostic Information
      Tests
      
tm2083 - 744J and 824J Loader
Table of Contents
Foreword
Technical Information Feedback Form
Section 9000: General Information
Group 01: Safety Information
Recognize Safety Information
Follow Safety Instructions
Operate Only If Qualified
Wear Protective Equipment
Avoid Unauthorized Machine Modifications
Add Cab Guarding For Special Uses
Inspect Machine
Stay Clear of Moving Parts
Avoid High-Pressure Oils
Beware of Exhaust Fumes
Prevent Fires
Prevent Battery Explosions
Handle Chemical Products Safely
Dispose of Waste Properly
Prepare for Emergencies
Use Steps and Handholds Correctly
Start Only From Operator's Seat
Use and Maintain Seat Belt
Prevent Unintended Machine Movement
Avoid Work Site Hazards
Use Special Care When Operating Loader
Keep Riders Off Machine
Avoid Backover Accidents
Avoid Machine Tip Over
Operating on Slopes
Operating or Traveling On Public Roads
Inspect and Maintain ROPS
Add and Operate Attachments Safely
Park And Prepare For Service Safely
Service Cooling System Safely
Remove Paint Before Welding or Heating
Make Welding Repairs Safely
Drive Metal Pins Safely
Section 9005: Operational Checkout Procedure
Group 10: Operational Checkout Procedure
Complete Machine Operational Checkout
Section 9010: Engine
Group 05: Theory of Operation
POWERTECH POWERTECH is a trademark of Deere & Company 12.5L (6125) John Deere Engines
Electronic Fuel Systems
Engine Air Heater Circuit Theory of Operation (S.N. —590067)
Engine Air Heater Circuit Theory of Operation (S.N. 590068— )
Group 15: Diagnostic Information
Diagnose Engine Malfunctions
Group 25: Tests
Engine Speed Test
Air Filter Restriction Indicator Switch Test
Engine Power Test Using Engine Pulldown
Air Intake System Leakage Test
Engine Power Test Using Turbocharger Boost Pressure
Fuel Line Leakage Test
Section 9015A: Electrical System—744J And 824J (S.N. —590067)
Group 05: System Information
Electrical Diagram Information (S.N. —590067)
Group 10: System Diagrams
Fuse and Relay Specifications (S.N. —590067)
System Functional Schematic Section Legend (S.N. —590067)
Functional Schematic And Component Location Legend (S.N. —590067)
System Functional Schematic (S.N. —590067)
Loader Frame Harness (W2) Component Location (S.N. —590067)
Load Center Harness (W3) Component Location (S.N. —590067)
Front Console Harness (W4) Component Location (S.N. —590067)
Engine Frame Harness (W5) Component Location (S.N. —590067)
Engine Harness (W6) Component Location (S.N. —590067)
Engine Air Heater Harness (W7) Component Location (S.N. —590067)
Return-to-Dig Harness (W8) Component Location (S.N. —590067)
Ride Control Harness (W9) Component Location (S.N. —590067)
Transmission Harness (W10) Component Location (S.N. —590067)
Rear Frame Harness (W13) Component Location (S.N. —590067)
Spin Control Harness (W14) Component Location (S.N. —590067)
License Plate Light Harness (W15) Component Location (S.N. —590067)
Pin Disconnect Harness (W16) Component Location (S.N. —590067)
Secondary Steering Switch Harness (W17) Component Location (S.N. —590067)
Cab Work Lights Harness (W19) Component Location (S.N. —590067)
Blower And A/C Harness (W20) Component Location (S.N. —590067)
Converter and Power Plug Harness (W21) Component Location (S.N. —590067)
Secondary Steering Pump Motor Harness (W23) Component Location (S.N. —590067)
Battery (Cables) Harness (W24) Component Location (S.N. —590067)
Engine Valve Cover Harness (W33) Component Location (S.N. —590067)
Radio Harness (W34) Component Location (S.N. —590067)
Electric Air Adjust Seat Harness (W36) Component Location (S.N. —590067)
CAN Terminator Harness (W37) Component Location (S.N. —590067)
Group 15: Sub-System Diagnostics
Start Circuit Theory of Operation (S.N. —590067)
Ride Control Circuit Theory Of Operation (S.N. —590067)
Monitor Display Unit Circuit Theory Of Operation (S.N. —590067)
Monitor Display Unit—Accessing Menus (S.N. —590067)
Monitor Display Unit—Normal Display Menu (S.N. —590067)
Monitor Display Unit—Accessory Menu (S.N. —590067)
Monitor Display Unit—Diagnostics Menu (S.N. —590067)
Monitor Display Unit—Service Menu (S.N. —590067)
Chassis Control Unit Circuit Theory Of Operation (S.N. —590067)
Spin Control Circuit Theory Of Operation (824J) (S.N. —590067)
Transmission Control Unit Circuit Theory Of Operation (S.N. —590067)
Transmission Modes Of Operation—Manual And Automatic (S.N. —590067)
Transmission Functions Set At Monitor Display Unit (S.N. —590067)
Transmission Shift Ranges In Automatic Mode (S.N. —590067)
Transmission Control Unit Response To Malfunctions (S.N. —590067)
Park Brake Circuit Theory Of Operation (S.N. —590067)
Pilot Enable And Boom Down Circuit Theory Of Operation (S.N. —590067)
Return-to-Carry, Boom Height Kickout And Return-to-Dig Circuit Theory Of Operation (S.N. —590067)
Secondary Steering Circuit Theory Of Operation (S.N. —590067)
Engine Control Unit Theory of Operation (S.N. —590067)
Group 20: References
Diagnostic Trouble Codes Quick Reference List (S.N. —590067)
Transmission Diagnostic Trouble Codes (S.N. —590067)
Transmission Diagnostic Trouble Codes (S.N. —590067) (Continued)
Engine Related Diagnostic Trouble Codes (S.N. —590067)
Engine Diagnostic Trouble Codes (S.N. —590067)
Steering and Brake Diagnostic Trouble Codes (S.N. —590067)
Electrical System Diagnostic Trouble Codes (S.N. —590067)
Hydraulic System Diagnostic Trouble Codes (S.N. —590067)
CAN Circuit Testing
Check Battery Electrolyte Level and Terminals (S.N. —590067)
Procedure for Testing Batteries (S.N. —590067)
Electrical Component Specifications (S.N. —590067)
Transmission Control Valve Solenoid Check (S.N. —590067)
Clutch Cut-Off Sensor Adjustment (S.N. —590067)
Throttle Position Sensor Adjustment (S.N. —590067)
Boom Height Kickout Adjustment (S.N. —590067)
Return-to-Carry Kickout Adjustment (S.N. —590067)
Return-to-Dig Adjustment (S.N. —590067)
Sensor Circuitry Check (S.N. —590067)
Diagnostic Trouble Codes—After Machine Repair (S.N. —590067)
Change Back-Up alarm Volume (S.N. —590067)
Remove and Install Pressure Switches (S.N. —590067)
Replace METRI-PACK® Connectors (S.N. —590067)
Install METRI-PACK® Contact (S.N. —590067)
Replace DEUTSCH® Connectors (S.N. —590067)
Install DEUTSCH® Contact (S.N. —590067)
Replace WEATHER PACK® Connector (S.N. —590067)
Install WEATHER PACK® Contact (S.N. —590067)
Replace CINCH™ Connectors (S.N. —590067)
Install CINCH™ Contact (S.N. —590067)
Remove Connector Body from Blade Terminals
Remove Blade Terminals From Fuse Block (S.N. —590067)
Transmission Controller Remove and Install (S.N. —590067)
Engine Controller Remove and Install (S.N. —590067)
Chassis Control Unit Remove and Install (S.N. —590067)
Monitor Display Unit Remove and Install (S.N. —590067)
Reprogram Monitor Display Unit (S.N. —590067)
Section 9015B: Electrical System—744J And 824J (S.N. 590068—600915)
Group 05: System Information
Electrical Diagram Information (S.N. 590068— )
Group 10: System Diagrams
Fuse and Relay Specifications (S.N. 590068—600915)
System Functional Schematic, Wiring Diagram and Component Location Legend (S.N. 590068—600915)
System Functional Schematic and Section Legend (S.N. 590068—600915)
Loader Frame Harness (W2) Component Location (S.N. 590068—600915)
Loader Frame Harness (W2) Wiring Diagram (S.N. 590068—600915)
Load Center Harness (W3) Component Location (S.N. 590068—600915)
Load Center Harness (W3) Wiring Diagram (S.N. 590068—600915)
Front Console Harness (W4) Component Location (S.N. 590068— )
Front Console Harness (W4) Wiring Diagram (S.N. 590068— )
Engine Frame Harness (W5) Component Location (S.N. 590068— )
Engine Frame Harness (W5) Wiring Diagram (S.N. 590068— )
Engine Harness (W6) Component Location (S.N. 590068— )
Engine Harness (W6) Wiring Diagram (S.N. 590068—600915)
Engine Air Heater Harness (W7) Component Location (S.N. 590068— )
Engine Air Heater Harness (W7) Wiring Diagram (S.N. 590068— )
Ride Control Harness (W9) Component Location (S.N. 590068—600915)
Ride Control Harness (W9) Wiring Diagram (S.N. 590068—600915)
Transmission Harness (W10) Component Location (S.N. 590068— )
Transmission Harness (W10) Wiring Diagram (S.N. 590068— )
Rear Frame Harness (W13) Component Location (S.N. 590068— )
Rear Frame Harness (W13) Wiring Diagram (S.N. 590068—600915)
Cab Roof Harness (W19) Component Location (S.N. 590068—600915)
Cab Roof Harness (W19) Wiring Diagram (S.N. 590068—600915)
Blower and A/C (W20) Component Location (S.N. 590068— )
Blower and A/C (W20) Wiring Diagram (S.N. 590068— )
Radio Harness (W34) Component Location (S.N. 590068— )
Radio Harness (W34) Wiring Diagram (S.N. 590068— )
Group 15: Sub-System Diagnostics
Starting and Charging Circuit Theory of Operation (S.N. 590068— )
Controller Area Network (CAN) Theory of Operation (S.N. 590068— )
Engine Control Unit (ECU) Circuit Theory of Operation (S.N. 590068— )
Flex Load Controller (FLC) Circuit Theory of Operation (S.N. 590068— )
Transmission Control Unit (TCU) Circuit Theory of Operation (S.N. 590068— )
CAN Monitor Unit (CMU) Circuit Theory of Operation (S.N. 590068— )
Group 20: References
Diagnostic Trouble Codes Quick Reference List (S.N. 590068—600915)
CAN Monitor Unit (CMU) Diagnostic Trouble Codes (S.N. 590068—600915)
Flex Load Controller (FLC) Diagnostic Trouble Codes (S.N. 590068—600915)
Sealed Switch Module (SSM) Diagnostic Trouble Codes (S.N. 590068—600915)
Transmission Control Unit (TCU) Diagnostic Trouble Codes (S.N. 590068—600915)
Engine Control Unit (ECU) Diagnostic Trouble Codes (S.N. 590068—600915)
Flex Load Controller (FLC) Fault Exceptions (S.N. 590068— )
CAN Circuit Testing
Check Battery Electrolyte Level and Terminals (S.N. 590068— )
Procedure For Testing Batteries (S.N. 590068— )
Electrical Component Specifications (S.N. 590068— )
Transmission Control Valve Solenoid Check (S.N. 590068— )
Clutch Cut-Off Sensor Check and Adjustment (S.N. 590068— )
Boom Height Kickout/Return-to-Carry Adjustment (S.N. 590068— )
Return-to-Dig Adjustment (S.N. 590068— )
Sensor Circuitry Check (S.N. 590068— )
Diagnostic Trouble Codes—After Machine Repair (S.N. 590068— )
Change Back-Up Alarm Volume (S.N. 590068— )
Remove and Install Pressure Switches (S.N. 590068— )
Replace METRI-PACK® Connectors (S.N. 590068— )
Install METRI-PACK® Contact (S.N. 590068— )
Replace DEUTSCH® Connectors (S.N. 590068— )
Install DEUTSCH® Contact (S.N. 590068— )
Replace WEATHER PACK® Connector (S.N. 590068— )
Install WEATHER PACK® Contact (S.N. 590068— )
Replace CINCH™ Connectors (S.N. 590068— )
Install CINCH™ Contact (S.N. 590068— )
Repair 32 and 48 Way CINCH™ Connectors (S.N. 590068— )
Remove Connector Body from Blade Terminals (S.N. 590068— )
Engine Control Unit (ECU) Remove and Install (S.N. 590068— )
Flex Load Controller (FLC) Remove and Install (S.N. 590068— )
Transmission Control Unit (TCU) Remove and Install (S.N. 590068— )
Sealed Switch Module (SSM) Remove and Install (S.N. 590068— )
CAN Monitor Unit (CMU) Remove and Install (S.N. 590068— )
Reprogram CAN Monitor Unit (CMU) S.N. 590068—)
Electronic Controller Reconfiguration (S.N. 590068 —)
Section 9015C: Electrical System—744J And 824J (S.N. 600916— )
Group 05: System Information
Electrical Diagram Information (S.N. —165691)
Group 10: System Diagrams
Fuse and Relay Specifications (S.N. 600916— )
System Functional Schematic, Wiring Diagram and Component Location Master Legend (S.N. 600916— )
System Functional Schematic (S.N. 600916— )
JDLink™ System Functional Schematic—MIG/GTT
JDLink™ System Functional Schematic—MTG/SAT
Loader Frame Harness (W2) Component Location (S.N. 600916— )
Loader Frame Harness (W2) Wiring Diagram (S.N. 600916— )
Load Center Harness (W3) Component Location (S.N. 600916— )
Load Center Harness (W3) Wiring Diagram (S.N. 600916— )
Front Console Harness (W4) Component Location (S.N. 590068— )
Front Console Harness (W4) Wiring Diagram (S.N. 590068— )
Engine Frame Harness (W5) Component Location (S.N. 590068— )
Engine Frame Harness (W5) Wiring Diagram (S.N. 590068— )
Engine Harness (W6) Component Location (S.N. 590068— )
Engine Harness (W6) Wiring Diagram (S.N. 600916— )
Engine Air Heater Harness (W7) Component Location (S.N. 590068— )
Engine Air Heater Harness (W7) Wiring Diagram (S.N. 590068— )
Joystick Steering Harness (W8) Component Location
Joystick Steering Harness (W8) Wiring Diagram
Transmission Harness (W10) Component Location (S.N. 590068— )
Transmission Harness (W10) Wiring Diagram (S.N. 590068— )
Rear Frame Harness (W13) Component Location (S.N. 590068— )
Rear Frame Harness (W13) Wiring Diagram (S.N. 600916— )
Cab Roof Harness (W19) Component Location
Cab Roof Harness (W19) Wiring Diagram
Blower and A/C (W20) Component Location (S.N. 590068— )
Blower and A/C (W20) Wiring Diagram (S.N. 590068— )
JDLink™ System Harnesses Component Location—MIG/GTT
JDLink™ System Harnesses Component Location—MTG/SAT
JDLink™ System Wiring Diagrams—MIG/GTT
JDLink™ System Wiring Diagrams—MTG/SAT
Radio Harness (W34) Component Location (S.N. 590068— )
Radio Harness (W34) Wiring Diagram (S.N. 590068— )
Group 15: Sub-System Diagnostics
Starting and Charging Circuit Theory of Operation (S.N. 590068— )
Controller Area Network (CAN) Theory of Operation (S.N. 590068— )
Engine Control Unit (ECU) Circuit Theory of Operation (S.N. 590068— )
Flex Load Controller (FLC) Circuit Theory of Operation (S.N. 590068— )
Transmission Control Unit (TCU) Circuit Theory of Operation (S.N. 590068— )
CAN Monitor Unit (CMU) Circuit Theory of Operation (S.N. 590068— )
Group 20: References
Diagnostic Trouble Code Quick Reference (S.N. 600916— )
CAN Monitor Unit (CMU) Diagnostic Trouble Codes (S.N. 600916— )
Flex Load Controller (FLC) Diagnostic Trouble Codes (S.N. 600916— )
Sealed Switch Module (SSM) Diagnostic Trouble Codes (S.N. 600916— )
Transmission Control Unit (TCU) Diagnostic Trouble Codes (S.N. 600916— )
Engine Control Unit (ECU) Diagnostic Trouble Codes (S.N. 600916— )
Flex Load Controller (FLC) Fault Exceptions (S.N. 590068— )
JDLink™ System Identification
JDLink™ Connection Procedure
CAN Circuit Testing
Check Battery Electrolyte Level and Terminals (S.N. 590068— )
Procedure For Testing Batteries (S.N. 590068— )
Electrical Component Specifications (S.N. 590068— )
Transmission Control Valve Solenoid Check (S.N. 590068— )
Clutch Cut-Off Sensor Check and Adjustment (S.N. 590068— )
Boom Height Kickout/Return-to-Carry Adjustment (S.N. 590068— )
Return-to-Dig Adjustment (S.N. 590068— )
Sensor Circuitry Check (S.N. 590068— )
Diagnostic Trouble Codes—After Machine Repair (S.N. 590068— )
Change Back-Up Alarm Volume (S.N. 590068— )
Remove and Install Pressure Switches (S.N. 590068— )
Replace METRI-PACK® Connectors (S.N. 590068— )
Install METRI-PACK® Contact (S.N. 590068— )
Replace DEUTSCH® Connectors (S.N. 590068— )
Install DEUTSCH® Contact (S.N. 590068— )
Replace WEATHER PACK® Connector (S.N. 590068— )
Install WEATHER PACK® Contact (S.N. 590068— )
Replace CINCH™ Connectors (S.N. 590068— )
Install CINCH™ Contact (S.N. 590068— )
Repair 32 and 48 Way CINCH™ Connectors (S.N. 590068— )
Remove Connector Body from Blade Terminals (S.N. 590068— )
Engine Control Unit (ECU) Remove and Install (S.N. 590068— )
Flex Load Controller (FLC) Remove and Install (S.N. 590068— )
Transmission Control Unit (TCU) Remove and Install (S.N. 590068— )
Sealed Switch Module (SSM) Remove and Install (S.N. 590068— )
CAN Monitor Unit (CMU) Remove and Install (S.N. 590068— )
Reprogram CAN Monitor Unit (CMU) S.N. 590068—)
Electronic Controller Reconfiguration (S.N. 590068 —)
Section 9020: Power Train
Group 05: Theory of Operation
TeamMateII Axles
Transmission Clutch Engagement and Solenoids Activated
Transmission Operation
Torque Converter Operation
Transmission Operation—First Gear Forward
Clutch Pack Operation
Transmission Hydraulic System
Transmission Control Valve Components
Transmission Clutch Modulation
Thermal Bypass Valve Operation
Hydraulic Differential Lock Air Boost System
Park Brake Operation
Group 15: Diagnostic Information
Power Train Component Location
Transmission System Schematic—First Forward
Diagnose Transmission System Malfunctions
Diagnose Service Brake Malfunctions
Diagnose Differential and Axle Malfunctions
Diagnose Drive Line Malfunctions
Diagnose Park Brake Malfunctions
Group 20: Adjustments
External Service Brake Inspection
Hydraulic Brake Bleeding Procedure
Brake Pump and Differential Lock System Oil Clean-Up Procedure Using Portable Filter Caddy
Transmission Speed Sensor Adjustment
Transmission Control Unit (TCU)—Electronic Clutch Adjustment (S.N. —590067)
Transmission Control Unit (TCU)—Electronic Clutch Calibration (S.N. 590068— )
Group 25: Tests
Transmission Oil Warm-Up Procedure
Driveline Bearing—Park Brake Pressure Test
Driveline Bearing—Park Brake Drag Test
Transmission Pump Flow Test
Transmission System Pressure Test
Transmission Clutch Pressure Test
Transmission Element Leakage Test
Lube Pressure Test
Differential Lock Pressure Test
Differential Lock Leakage Test
Converter—In Pressure Test
Converter—Out Pressure Test
Converter Relief Pressure Test
Converter—Out Flow Test
Torque Converter Stall Speed Test
Transmission Oil Cooler Thermal Bypass Valve Temperature Test
Transmission Oil Cooler Thermal Bypass Valve Pressure Test
Transmission Oil Cooler Restriction Test
Section 9025: Hydraulic System
Group 05: Theory of Operation
Main Hydraulic Pump Operation
Steering System Components
Steering Circuit Operation—Right Turn
Priority Valve Operation (Neutral)
Priority Valve (Mid-Turn)
Priority Valve (Steering Cylinder Bottomed)
Steering Valve Operation
Secondary Steering System Operation
Secondary Steering Inlet Manifold Operation
Hydraulic System Components
Loader Hydraulic System
Pump Pressure Compensator
Pump Control At Neutral
Pump Control Function Metering
Pump Control—Full Flow
Pump Control—Function Bottomed
Pressure Reducing Valve—Boom Raise Operation (S.N. —590067)
Pressure Reducing Valve—Boom Down—Engine Running Operation (S.N. —590067)
Pressure Reducing Valve—Boom Down—Engine Off Operation (S.N. —590067)
Pressure Reducing Valve Operation (S.N. 590068— )
Pilot Control Lever Operation—Boom Float (S.N. —590067)
Pilot Control Lever Operation—Bucket Rollback (S.N. —590067)
Pilot Control Lever Operation (S.N. 590068— )
Pilot Orifice Check Valve For Control Valve Sections
Loader Control Valve Operation
Boom Section Operation
Anti-Cavitation Valve Operation
Loader Control Valve—Load Sense Circuit
Return Filter Operation
Ride Control Operation—On Position—Bucket Dump (S.N. —590067)
Ride Control Operation—Off Position (S.N. —590067)
Ride Control Operation (S.N. 590068— )
Service Brake Hydraulic System
Service Brake Accumulator
Service Brake Valve
Pin and Axle Disconnect Operation
Group 15: Diagnostic Information
Hydraulic System Component Locations
Hydraulic System Schematics
Diagnose Hydraulic System Malfunctions
Group 20: Adjustments
Hydraulic Oil Clean-Up Procedure Using Portable Filter Caddy
Return-To-Dig Adjustment
Return-To-Carry and Boom Height Kickout Adjustment
Pilot Controller Adjustment—Two Lever Pilot
Ride Control Accumulator Discharge Procedure—If Equipped
Ride Control Accumulator Gas Charge Procedure—If Equipped
Ride Control Accumulator Draining Procedure
Auxiliary Valve Section—Stroke Adjustment
Group 25: Test
Hydraulic Oil Warm-Up Procedure
JT02156A Digital Pressure and Temperature Analyzer Kit Installation
Steering / Loader Pump And Loader Hydraulic Pump Control Assembly Adjustment Test
Steering / Loader Hydraulic Pump Flow Test
Loader Hydraulic Pump Flow Test
Loader Relief And Circuit Relief Valve Pressure Test
Loader Cylinder Drift Test
Boom And Bucket Cylinder Leakage Test
Hydraulic Oil Cooler Restriction Test
Steering Valve Leakage Test
Steering Valve Drift Test
Priority Valve Leakage and Steering System Pressure Test
Priority Valve Check Valve Leakage Test
Priority Valve LS Port Flow Test
Secondary Steering Pump Relief Valve Pressure Test
Secondary Steering Manifold Primary Check Valve Leakage Test
Secondary Steering Manifold Secondary Check Valve Leakage Test
Pilot Control Valve Pressure Test (S.N. —590067)
Pilot Control Valve Pressure Test—Single Lever (S.N. 590068— )
Pilot Control Valve Pressure Test—Two Lever
Pressure Reducing Valve Pressure Test
Cycle Time Test
Brake Accumulator Precharge Test
Boom Down Accumulator Precharge Test (S.N. 590068— )
Service Brake Valve Pressure Test
Service Brake Valve Leakage Test
Service Brake Accumulator Inlet Check Valve Leakage Test
Axle and Pin Disconnect Pressure Test
Hydraulic Oil Filter Inspection Procedure
Section 9031: Heating And A/C
Group 05: Theory Of Operation
Air Conditioning System Cycle Of Operation
Group 15: Diagnostic Information
Diagnose Air Conditioning System Malfunctions
Diagnose Heater System Malfunctions
Group 25: Tests
Air Conditioning System Fittings Reference Chart
Proper Refrigerant Handling
R134a Refrigerant Cautions
Refrigerant Hoses and Tubing Inspection
R134a Air Conditioning System Test
Operating Pressure Diagnostic Chart
Low Pressure Switch Test (S.N. —590067)
High Pressure Switch Test (S.N. —590067)
A/C Binary Pressure Switch Test (S.N. 590068— )
Freeze Control Switch
Leak Testing

John Deere 4WD Loaders 744J, 824J Operation and Test Service Manual (TM2083)