Complete Operation and Test manual with Electrical Wiring Diagrams for John Deere 744H 4WD Loader & 744H MH Material Handler, with all the shop information to maintain, diagnose, and service like professional mechanics.

John Deere 744H 4WD Loader & 744H MH Material Handler workshop Diagnostics 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.
* 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.

TM1602 - John Deere 744H 4WD Loader and 744H MH Material Handler Technical Manual (Operation and Test).PDF
TM1602 - John Deere 744H 4WD Loader and 744H MH Material Handler Technical Manual (Operation and Test).EPUB

Total Pages: 1,301 pages
File Format: PDF/EPUB/MOBI/AZW (PC/Mac/Android/Kindle/iPhone/iPad; bookmarked, ToC, Searchable, Printable)
Language: English

MAIN SECTIONS
Foreword
   Technical Information Feedback Form
   General Information
      Safety Information
   Operational Checkout Procedure
      Operational Checkout Procedure
   Engine
      Theory of Operation
      System Operational Checks
      Diagnostic Information
      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
      Test
   Heating And A/C
      Theory Of Operation
      System Operational Checks
      Diagnostic Information
      Tests

tm1602 - 744H Loader, 744H MH Material Handler

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 Fluids

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

Electronic Fuel Systems

Air Cleaner Operation

Group 10: System Operational Checks

Engine Operational Checks

Engine Diagnostic Trouble Codes for Lucas Engine Controller (S.N. —573732)

Engine Diagnostic Trouble Codes John Deere Engine Controller (S.N. 573733—)

Group 15: Diagnostic Information

Diagnose Engine Malfunctions

Group 25: Tests

Air Filter Restriction Indicator Switch Test

Radiator Air Flow Test (S.N.—581927)

Radiator Air Flow Test (S.N. 581928—)

Engine Power Test Using Engine Pulldown

Engine Power Test Using Turbocharger Boost Pressure (S.N.— 581927)

Engine Power Test Using Turbocharger Boost Pressure (S.N. 581928—)

Air Intake System Leakage Test

Fuel Pump Pressure Test—Dual Rail Fuel System (S.N. — 581927)

Fuel Pump Pressure Test—Single Rail Fuel System (S.N. 581928—)

Flush Fuel Rail

Section 9015: Electrical System

Group 05: System Information

Electrical Diagram Information

Group 10: System Diagrams

Fuse Specifications

Functional Schematic and Component Location Legend (S.N. — 581927)

Functional Schematic and Component Location Legend (S.N. 581928—)

System Functional Schematic Section Legend (S.N. — 581927)

System Functional Schematic Section Legend (S.N. 581928—)

System Functional Schematic (S.N. — 581927)

System Functional Schematic (S.N. 581928—)

Loader Frame Harness (W2) Component Location

Loader Frame Harness (W2) Connectors, Wire and Pin Location

Load Center Harness (W3) Component Location

Load Center Harness (W3) Connectors, Wire and Pin Location

Front Console Harness (W4) Component Location

Front Console Harness (W4) Component Location Mating Connectors

Front Console Harness (W4) Connectors, Wire and Pin Location

Engine Frame Harness (W5) Component Location

Engine Frame Harness (W5) Connectors, Wire and Pin Location

Engine Harness (W6) Component Location

Engine Harness (W6) Connectors, Wire and Pin Location

Engine Air Heater Harness (W7) Component Location

Engine Air Heater Harness (W7) Connectors, Wire and Pin Location

Return-to-Dig Harness (W8) Component Location

Return-to-Dig Harness (W8) Connectors, Wire and Pin Location

Ride Control Harness (W9) Component Location

Ride Control Harness (W9) Connectors, Wire and Pin Location

Transmission Harness (W10) Component Location

Transmission Harness (W10) Connectors, Wire and Pin Location

Rear Frame Harness (W13) Component Location

Rear Frame Harness (W13) Connectors, Wire and Pin Location

LPM Mode Harness (W14) Component Location (If Equipped)

LPM Mode Harness (W14) Connectors, Wire and Pin Location

License Plate Light Harness (W15) Component Location

License Plate Light Harness (W15) Connector, Wire and Pin Location

Pin Disconnect Harness (W16) Component Location

Pin Disconnect Harness (W16) Connectors, Wire and Pin Location

Secondary Steering Switch Harness (W17) Component Location

Secondary Steering Switch Harness (W17) Connectors, Wire and Pin Location

Cab Work Lights Harness (W19) Component Location

Cab Work Lights Harness (W19) Connectors, Wire and Pin Location

Blower/Air Conditioning Harness (W20) And Component Location Drawing (S.N. —581927)

Connectors For Blower And A/C Harness (W20)

Converter and Power Plug Harness (W21) Component Location

Converter and Power Plug Harness (W21) Connectors, Wire and Pin Location

Secondary Steering Pump Motor Harness (W23) Component Location

Secondary Steering Pump Motor Harness (W23) Connectors, Wire and Pin Location

Battery (Cables) Harness (W24) Component Location

Engine Valve Cover Harness (W33) Component Location

Engine Valve Cover Harness (W33) Connectors, Wire and Pin Location

Radio Harness (W34) Component Location (S.N. —572398)

Radio Harness (W34) Component Location (S.N. 572399—578925)

Radio Harness (W34) Component Location (S.N. 578926—)

Electric Air Adjust Seat Harness (W36) Component Location

CAN Terminator Harness (W37) Component Location

Group 15: Sub-System Diagnostics

24V System Power Circuit Operational Information (S.N. — 581927)

24V System Power Circuit Theory of Operation (S.N. — 581927)

24V System Power Circuit Functional Schematic (S.N. — 581927)

24V System Power Circuit Operational Information (S.N. 581928—)

24V System Power Circuit Theory of Operation (S.N. 581928—)

24V System Power Circuit Functional Schematic (S.N. 581928—)

Charging Circuit Operational Information (S.N. —581927)

Charging Circuit Theory of Operation (S.N. —581927)

Charging Circuit Functional Schematic (S.N. —581927)

Charging Circuit Operational Information (S.N. 581928—)

Charging Circuit Theory of Operation (S.N. 581928—)

Charging Circuit Functional Schematic (S.N. 581928—)

Start Circuit Operational Information (S.N. —581927)

Start Circuit Theory of Operation (S.N. —581927)

Start Circuit Functional Schematic (S.N. —581927)

Start Circuit Operational Information (S.N. 581928—)

Start Circuit Theory of Operation (S.N. 581928—)

Start Circuit Functional Schematic (S.N. 581928—)

Engine Air Heater Circuit Specifications (S.N. —581927)

Engine Air Heater Circuit Operational Information (S.N. —581927)

Engine Air Heater Circuit Theory of Operation (S.N. —581927)

Engine Air Heater Circuit Functional Schematic (S.N. —581927)

Engine Air Heater Circuit Specifications (S.N. 581928—)

Engine Air Heater Circuit Operational Information (S.N. 581928—)

Engine Air Heater Circuit Theory of Operation (S.N. 581928—)

Engine Air Heater Circuit Functional Schematic (S.N. 581928—)

Starting Aid Circuit Operational Information (S.N. —581927)

Starting Aid Circuit Theory of Operation (S.N. —581927)

Starting Aid Circuit Functional Schematic (S.N. —581927)

Starting Aid Circuit Operational Information (S.N. 581928—)

Starting Aid Circuit Theory of Operation (S.N. 581928—)

Starting Aid Circuit Functional Schematic (S.N. 581928—)

Ride Control Circuit Specifications (S.N. —581927)

Ride Control Circuit Operational Information (S.N. —581927)

Ride Control Circuit Theory of Operation (S.N. —581927)

Ride Control Circuit Functional Schematic (S.N. —581927)

Ride Control Circuit Specifications (S.N. 581928—)

Ride Control Circuit Operational Information (S.N. 581928—)

Ride Control Circuit Theory of Operation (S.N. 581928—)

Ride Control Circuit Functional Schematic (S.N. 581928—)

Monitor Display Unit Specifications—Switches and Senders (S.N. —581927)

Monitor Display Unit Specifications—Switches and Senders (S.N. 581928—)

Monitor Display Unit Circuit Specifications—Gauge Sensors (S.N. —581927)

Monitor Display Unit Circuit Specifications—Gauge Sensors (S.N. 581928—)

Monitor Display Unit Circuit Specifications—Gauge Ranges

Monitor Display Unit Circuit Specifications—Gauges

Monitor Display Unit Specifications—Diagnostic Menu Sensors (S.N. —581927)

Monitor Display Unit Specifications—Diagnostic Menu Sensors (S.N. 581928—)

Monitor Display Unit Operational Information (S.N. —581927)

Monitor Display Unit Operational Information (S.N. 581928—)

Monitor Display Unit Theory of Operation—Function (S.N. —581927)

Monitor Display Unit Theory of Operation—Function (S.N. 581928—)

Monitor Display Unit Theory of Operation—Operating Modes (S.N. —581927)

Monitor Display Unit Theory of Operation—Operating Modes (S.N. 581928—)

Monitor Display Unit Theory of Operation—Caution and Warning Lights, and Gauges (S.N. —581927)

Monitor Display Unit Theory of Operation—Caution and Warning Lights, and Gauges (S.N. 581928—)

Monitor Display Unit Theory of Operation—Switches, Sensors and Indicator Lights (S.N. —581927)

Monitor Display Unit Theory of Operation—Switch and Sensor Indicators (S.N. 581928—)

Monitor Display Unit Diagnostic Guideline

Monitor Display Unit Circuit Functional Schematic

Monitor Display Unit—Accessing Menus (S.N. —581927)

Monitor Display Unit—Accessing Menus (S.N. 581928—)

Monitor Display Unit Menu Structure

Monitor Display Unit—Normal Display

Monitor Display Unit—Accessory Menu—Clutch Cutoff (A 01)

Monitor Display Unit—Accessory Menu—Quick Shift Mode (A 02)

Monitor Display Unit—Accessory Menu—Auto Mode to First (A 03)

Monitor Display Unit—Accessory Menu—Job Timer Mode (A 04)

Monitor Display Unit—Accessory Menu—Stop Watch Mode (A 05)

Monitor Display Unit—Accessory Menu—0.1 Hour Meter Mode (A 06)

Monitor Display Unit—Accessory Menu—Metric Units Mode (A 07)

Monitor Display Unit—Diagnostics Menu—Diagnostic Trouble Codes (d 01)

Monitor Display Unit—Diagnostics Menu—Continuity Check (d 02)

Monitor Display Unit—Diagnostics Menu—Battery Monitor (d 03)

Monitor Display Unit—Diagnostics Menu—Engine Sensors (d 04)

Monitor Display Unit—Diagnostics Menu—Transmission Sensors (d 05)

Monitor Display Unit—Diagnostics Menu—Hydraulic Sensors (d 06)

Monitor Display Unit—Diagnostics Menu—Fuel Sensor (d 07)

Monitor Display Unit—User Diagnostics Menu—LPM Mode (d 09) (744H MH)

Monitor Display Unit—User Diagnostics Menu—Machine ID (d 10)

Monitor Display Unit—Service Menu—Machine Model (S 01)

Monitor Display Unit—Service Menu—Tell-Tale Diagnostic Trouble Codes (S 02)

Monitor Display Unit—Service Menu—Tire Size (S 03)

Monitor Display Unit—Service Menu—Enable Options (S 06)

Monitor Display Unit—Service Menu—Hitachi Mode (S 07)

Monitor Display Unit Reconfiguration—Service Menu Access

Monitor Display Unit Reconfiguration—Machine Model (S 01)

Monitor Display Unit Reconfiguration—Tire Size (S 03)

Monitor Display Unit Reconfiguration—Enable Options (S 06)

Monitor Display Unit Reconfiguration—Delete Diagnostic Trouble Codes

Chassis Computer Unit Circuit Operational Information (S.N. 581928—)

Chassis Computer Unit Circuit Theory of Operation (S.N. 581928—)

Chassis Computer Unit—Intermittent Wipers Circuit Signals

Chassis Computer Unit—Turn and Flasher Light Signals

Chassis Computer Unit—Drive Lights and Work Lights Signals

Chassis Computer Unit—Tail/Marker Lights Signals

Chassis Computer Unit—High Beam Lights Signals

Chassis Computer Unit—Battery Monitoring Signals (S.N. 581928—)

Chassis Computer Unit Diagnostic Guideline (S.N. 581928—)

Chassis Computer Unit Circuit Functional Schematic

Chassis Computer Unit Circuit Connector Signals for 30-Pin Connector X33 (S.N. — 571790)

Chassis Computer Unit Circuit Connector Signals for 60-Pin Connector X34 (S.N. — 571790)

Chassis Computer Unit Circuit Connector Signals for 30-Pin Connector X33 (S.N. 571791—573732)

Chassis Computer Unit Circuit Connector Signals for 60-Pin Connector X34 (S.N. 571791—573732)

Chassis Computer Unit Circuit Connector Signals for 30-Pin Connector X33 (S.N. 573733—581927)

Chassis Computer Unit Circuit Connector Signals for 30-Pin Connector X33 (S.N. 581928—)

Chassis Computer Unit Circuit Connector Signals for 60-Pin Connector X34 (S.N. 573733—581927)

Chassis Computer Unit Circuit Connector Signals for 60-Pin Connector X34 (S.N. 581928—)

Load Performance Management (LPM) Option Circuit Specifications (744H MH)

Load Performance Management (LPM) Circuit Operational Information (744H MH)

Load Performance Management (LPM) Circuit Theory of Operation (744H MH)

Load Performance Management (LPM) Option Circuit Functional Schematic (744H MH) (S.N. 581928—)

Transmission Control Unit Circuit Specifications

Transmission Control Unit Circuit Operational Information

Transmission Control Unit Circuit Theory Of Operation

Transmission Control Unit Diagnostic Guideline

Transmission Control Unit Circuit Functional Schematic

Transmission Control Unit Connector Signals

Transmission Hydraulic Control Unit Solenoid Check

Transmission Modes Of Operation—Manual And Automatic

Transmission Functions Set At Monitor Display Unit

Transmission Shift Ranges In Automatic Mode

Transmission Control Unit Operating Modes

Transmission Control Unit Response To Malfunctions

Transmission Control Unit Inputs And Outputs

Back-Up Alarm, Park Brake Sensing and Park Brake Release Circuits Specifications (S.N. 581928—)

Back-Up Alarm, Park Brake Sensing and Park Brake Release Circuits Operational Information (S.N. 581928—)

Back-Up Alarm, Park Brake Sensing and Park Brake Release Circuits Theory of Operation (S.N. 581928—)

Back-Up Alarm, Park Brake Sensing and Park Brake Release Circuits Functional Schematic (S.N. 581928—)

Pilot Enable and Boom Down Circuits Operational Information (S.N. 581928—)

Pilot Enable and Boom Down Circuits Theory of Operation (S.N. 581928—)

Pilot Enable and Boom Down Circuits Functional Schematic (S.N. 581928—)

Return-to-Carry, Boom Height Kickout and Return-to-Dig Circuits Operational Information (S.N. 581928—)

Return-to-Carry, Boom Height Kickout and Return-to-Dig Circuits Theory of Operation (S.N. 581928—)

Return-to-Carry, Boom Height Kickout and Return-to-Dig Circuit Functional Schematic (S.N. 581928—)

Differential Lock and Pin Disconnect Circuit Functional Schematic

Front Wiper Circuit Functional Schematic (S.N. 581928—)

Rear Wiper Circuit Functional Schematic (S.N. 581928—)

Secondary Steering Option Circuit Specifications

Secondary Steering Option Circuit Operational Information

Secondary Steering Option Circuit Theory of Operation

Secondary Steering Option Circuit Functional Schematic

Horn Circuit Functional Schematic (S.N. 581928—)

Flasher and Turn Signal Functional Schematic (S.N. 581928—)

Tail, Marker, and License Plate Lighting Circuits Theory of Operation

Tail, Marker, and License Plate Lighting Circuits Theory of Operation

Tail, Marker, and License Plate Lighting Circuits Functional Schematic

Drive Light Circuit Theory of Operation (S.N. —581927)

Drive Light Circuit Operational Information (S.N. 581928—)

Drive Light Circuit Theory of Operation (S.N. 581928—)

Hi-Beam/Flash-to-Pass Light Circuit Operational Information

Hi-Beam/Flash-to-Pass Light Circuit Theory of Operation

Rotary Beacon Light Circuit (Optional) Operational Information

Rotary Beacon Light Circuit (Optional) Theory of Operation

Drive, Hi-Beam, and Rotary Beacon (Optional) Light Circuits Functional Schematic

Brake Light Circuit Specifications

Brake Light Circuit Operational Information

Brake Light Circuit Theory of Operation

Brake Light Circuit Functional Schematic

Cab Work Lights Circuit Operational Information

Cab Work Lights Circuit Theory of Operation

Cab Work Lights Circuit Functional Schematic (S.N. 581928—)

24V to 12V Converter and Radio Circuits Functional Schematic

Engine Controller Unit Specifications (S.N. —581927)

Engine Controller Unit—Sensor Specifications (S.N. 581928—)

Engine Controller Unit Specifications—Temperature Sensors

Engine Controller Unit Operational Information (S.N. —581927)

Engine Controller Unit Operational Information (S.N. 581928—)

Engine Controller Unit Theory of Operation (S.N. —581927)

Engine Controller Unit Theory of Operation (S.N. 581928—)

Engine Controller Unit—Input Signals (S.N. —581927)

Engine Controller Unit—Input Signals (S.N. 581928—)

Engine Controller Unit—Output Signals

Engine Control Unit Diagnostic Guideline (S.N. —573732)

Engine Control Unit Diagnostic Guideline (S.N. 573733—581927)

Engine Control Unit Diagnostic Guideline (S.N. 581928—)

Engine Controller Unit Functional Schematic (S.N. —573732)

Engine Controller Unit Connector Signals—Cab Side

Engine Controller Unit Connector Signals—Engine Side

Engine Controller Unit Functional Schematic (S.N. 573733—581927)

Engine Controller Unit Connector Signals—Injector Harness

Engine Controller Unit Connector Signals—Power Harness

Engine Controller Unit Connector Signals—CAN and Sensor Harness

Electronic Controllers Block Diagram (S.N. —573732)

Electronic Controllers Block Diagram (S.N. 581928—)

Group 20: References

Diagnostic Trouble Codes Quick Reference List

Transmission Diagnostic Trouble Codes

Engine Related Diagnostic Trouble Codes

Engine Diagnostic Trouble Codes

Steering and Brake Diagnostic Trouble Codes

Electrical System Diagnostic Trouble Codes

Hydraulic System Diagnostic Trouble Codes

Diagnose Battery Malfunctions

Check Battery Electrolyte Level and Terminals

Procedure for Testing Batteries

Using Booster Batteries—24 Volt System

Alternator Operation—24 Volt 55 Amp and 80 Amp Bosch

Clutch Cutoff Sensor Adjustment (S.N. 562284— )

Analog Throttle Position Sensor Adjustment

Diagnostic Trouble Codes—How to Use Listing for Diagnostics

Sensor Circuitry Check

Diagnostic Trouble Codes—After Machine Repair

Section 9020: Power Train

Group 05: Theory of Operation

Transmission Clutch Engagement and Solenoids Activated

Power Train Component Overview

Torque Converter Operation

Transmission Operation

Transmission Rear View

Transmission Side View

Transmission Front View

Transmission Test Points And Connections

Transmission Operation—First Gear Forward

Transmission Operation—Third Gear Forward

Transmission Operation—First Gear Reverse

Clutch Pack Operation

Transmission Hydraulic Components

Transmission Hydraulic System

Transmission Pump Operation

Transmission Hydraulic Control Unit Components (Transmission S.N. —000283)

Transmission Control Valve Components (Transmission S.N. 000284— )

Transmission Clutch Modulation Chart With Solenoids

Thermal Bypass Valve Operation

TEAMMATE TEAMMATE is a trademark of Deere & Company. II Axle Operation

John Deere TEAMMATE TEAMMATE is a trademark of Deere & Company. II Axles

Differential Lock Operation

Hydraulic Differential Lock Air Boost System

Turbocharger Boost For Differential Lock

Axle Shaft and Housing

Park Brake Operation

Group 15: Diagnostic Information

Diagnose Transmission System Malfunctions

Diagnose Service Brake Malfunctions

Diagnose Differential and Axle Malfunctions

Diagnose Drive Line Malfunctions

Diagnose Park Brake Malfunctions

Park Brake Will Not Release

Hydraulic Circuit Symbols

Transmission Control System 744H

Power Train (S.N. —581927)

Power Train (S.N. 581928— )

Transmission Control Circuit—First Forward

Group 20: Adjustments

Clutch Cut-Off Selection

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 Controller Unit (TCU)—Electronic Clutch Adjustment (S.N. 573601— )

Group 25: Tests

Display Monitor Tachometer

Display Monitor Transmission Oil Temperature

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 (S.N. —581927)

Transmission Element Leakage Test (S.N. 581928—)

Lube Pressure Test (S.N. —581927)

Lube Pressure Test (S.N. 581928—)

Converter-In Pressure Test

Converter-Out Pressure Test

Converter Relief Pressure Test (S.N. —581927)

Converter Relief Pressure Test (S.N. 581928—)

Converter-Out Flow Test (S.N. —581927)

Converter-Out Flow Test (S.N. 581928—)

Torque Converter Stall Speed Test

Transmission Oil Cooler Thermal Bypass Valve Test

Transmission Oil Cooler Thermal Bypass Valve Pressure Test

Transmission Oil Cooler Restriction Test (S.N. —581927)

Transmission Oil Cooler Restriction Test (S.N. 581928—)

Section 9025: Hydraulic System

Group 05: Theory of Operation

Main Hydraulic Pump - Loader And Steering 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

Steering Cylinder Operation

Secondary Steering System Operation

Secondary Steering Inlet Manifold Operation

Hydraulic System Components

Loader Hydraulic System

Loader Hydraulic Pump

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. —571404)

Pressure Reducing Valve—Boom Down—Engine Running Operation (S.N. —571404)

Pressure Reducing Valve—Boom Down—Engine OFF Operation (S.N —571404)

Pressure Reducing Valve—Boom Raise Operation (S.N. 571405— )

Pressure Reducing Valve—Boom Down—Engine Running Operation (S.N. 571405— )

Pressure Reducing Valve—Boom Down—Engine OFF Operation (S.N. 571405— )

Pilot Controller-Boom Float

Pilot Controller—Bucket Rollback

Pilot Orifice Check Valve For Control Valve Sections

Loader Control Valve (S.N. —572380)

Loader Control Valve (S.N. 572381—)

Boom Section Operation

Bucket Section Operation

Auxiliary Section Operation

Relief Valve Operation

Circuit Relief Valve Operation

Anti-Cavitation Valve Operation (S.N. —571096)

Anti-Cavitation Valve Operation (S.N. 571097— )

Loader Control Valve—Load Sense Circuit

Loader Cylinder—180 Series

Return Filter Operation

Ride Control Operation (S.N —582302)

Ride Control Operation—In The "On" Position—Bucket Dump (S.N —582302)

Ride Control Operation—In The “Off” Position (S.N —582302)

Ride Control “ON” Normal Operation (S.N 582303—)

Ride Control Operation—In The "ON" Position—Bucket Dump (S.N 582303—)

Ride Control Operation—In The “Off” Position (S.N 582303—)

Service Brake Hydraulic System

Brake Accumulator Operation

Service Brake Valve

Axle Disconnect And Pin Disconnect Circuit Operation (S.N. —571404)

Axle Disconnect And Pin Disconnect Circuit Operation (S.N. 571405— )

Group 15: Diagnostic Information

Diagnose Hydraulic System Malfunctions

Hydraulic Circuit Symbols

Loader Hydraulic System (S.N. —574108)

Loader Hydraulic System (S.N. 574109—581927)

Loader Hydraulic System (S.N. 581928—)

Brakes And Steering Hydraulic System (S.N. —581927)

Brakes And Steering Hydraulic System (S.N. 581928—)

Hydraulic System Schematic—Neutral

Hydraulic System Schematic—Multiple Functions Activated

Hydraulic Reservoir (S.N. —581927)

Hydraulic Reservoir (S.N. 581928—)

Group 20: Adjustments

Hydraulic Oil Clean-Up Procedure Using Portable Filter Caddy

Boom Height Kickout Adjustment

Return-To-Carry Kickout Adjustment

Return-to-Dig Adjustment (S.N. —564434)

Return-To-Dig Adjustment (S.N. 564435— )

Hydraulic Pump Stroke Limiter Adjustment

Ride Control Accumulator Discharge Procedure

Ride Control Accumulator Gas Charge Procedure

Ride Control Accumulator Draining Procedure

Group 25: Test

Hydraulic Oil Warm-Up Procedure

JT02156A Digital Pressure and Temperature Analyzer Kit Installation

Display Monitor Tachometer

Display Monitor Hydraulic Oil Temperature

Display Monitor Hydraulic Oil Pressure

Loader And Steering Pump And Loader Hydraulic Pump Control Assembly Adjustment Test

Loader And Steering 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

Pressure Reducing Valve Pressure Test

Cycle Time Test

Brake Accumulator Precharge Test

Service Brake Valve Pressure Test

Service Brake Valve Leakage Test

Service Brake Accumulator Inlet Check Valve Leakage Test

Service Brake And PRV (Pressure Reducing Valve) Accumulator Inlet Check Valve Leakage Test

Differential Lock Pressure Test

Differential Lock Leakage Test

Axle and Pin Disconnect Pressure Test (S.N. —571404)

Axle and Pin Disconnect Pressure Test (S.N. 571405— )

Pressure Reducing Valve Manifold Leakage Test

Hydraulic Oil Filter Inspection Procedure

Section 9031: Heating And A/C

Group 05: Theory Of Operation

Air Conditioning System Cycle Of Operation

Group 10: System Operational Checks

Air Conditioning Operational Checks

Results Of Operational Check

Group 15: Diagnostic Information

Diagnose Air Conditioning System Malfunctions

Diagnose Heater System Malfunctions

Air Conditioning Component Location Drawing

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

High Pressure Switch Test

Freeze Control Switch

Leak Testing

John Deere 744H 4WD Loader & 744H MH Material Handler Operation and Test Service Manual (TM1602)