Complete Operation and Test Service manual with electrical wiring diagrams for John Deere 4WD Loaders 744E, with all the technical information to maintain, diagnose, rebuild like professional mechanics.

John Deere 4WD Loaders 744E 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.

tm1454 - 744e loader operation and tests Technical Manual.pdf
tm1454 - 744e loader operation and tests Technical Manual.epub

PRODUCT DETAILS:
Total Pages: 1,148 pages
File Format: PDF (bookmarked, ToC, Searchable, Printable, high quality)
Language: English

MAIN SECTIONS
  Foreword
   Help!! Help!! Help!! Help!!
   General Information
      Safety
      General Specifications
      Torque Values
      Fuels And Lubricants
   Operational Checkout Procedure
      Operational Checkout Procedure
   Engine
      Theory Of Operation
      System Operational Checks
      Diagnostic Information
      Adjustments
      Test
   Electrical System
      Electrical System
   Power Train
      Theory Of Operation
      System Operational Checks
      Diagnostic Information
      Adjustments
      Tests
   Hydraulic System
      Theory Of Operation
      System Operational Checks
      Diagnostic Information
      Adjustments
      Tests
   Heating And Air Conditioning
      Theory Of Operation
      System Operational Checks
      Diagnostic Information
      Adjustments
      Tests)

tm1454 - 744e loader operation and tests

Table of Contents

Foreword

Help!! Help!! Help!! Help!!

Section 9000: General Information

Group 01: Safety

Handle Fluids Safely-Avoid Fires

Prevent Battery Explosions

Prepare for Emergencies

Prevent Acid Burns

Handle Chemical Products Safely

Avoid High-Pressure Fluids

Park Machine Safely

Support Machine Properly

Wear Protective Clothing

Work in Clean Area

Service Machines Safely

Work In Ventilated Area

Illuminate Work Area Safely

Replace Safety Signs

Use Proper Lifting Equipment

Remove Paint Before Welding or Heating

Avoid Heating Near Pressurized Fluid Lines

Keep ROPS Installed Properly

Service Tires Safely

Avoid Harmful Asbestos Dust

Practice Safe Maintenance

Use Proper Tools

Dispose of Waste Properly

Live With Safety

Group 02: General Specifications

744E Specifications

Drain And Refill Capacities

Group 03: Torque Values

Hardware Torque Specifications

ROPS Torque Specifications

Metric Bolt and Cap Screw Torque Values

Additional Metric Cap Screw Torque Values

Unified Inch Bolt and Cap Screw Torque Values

Check Oil Lines And Fittings

Service Recommendations for O-Ring Boss Fittings

Service Recommendations for Flat Face O-Ring Seal Fittings

Service Recommendations for Metric Series Four Bolt Flange Fitting

Service Recommendations For Inch Series Four Bolt Flange Fittings

Group 04: Fuels And Lubricants

Fuel Specifications

Storing Fuel

Do Not Use Galvanized Containers

Fuel Tank

Engine Oil

Hydraulic System Oil

Transmission Oil

Differential Oil

Grease

Alternative And Synthetic Lubricants

Lubricant Storage

Mixing Of Lubricants

Engine Coolant

Section 9005: Operational Checkout Procedure

Group 10: Operational Checkout Procedure

Operational Checkout Record Sheet-744E

Complete Machine Operational Checkout

Section 9010: Engine

Group 05: Theory Of Operation

Radiator Cap Operation

Thermostat Operation

Cooling System Operation

Aftercooler Operation

Air Cleaner Operation

Electronic Fuel Injection System (Serial No. 000376-)

Fuel System Operation-744E (Serial No. 000376-)

Group 10: System Operational Checks

Engine Operational Checks

Group 15: Diagnostic Information

Diagnose Fuel System Malfunctions

Diagnose Engine Malfunctions

Coolant Requirements

Group 20: Adjustments

JT05800 Digital Thermometer Installation

JT05801 Clamp-On Electronic Tachometer Installation

Using The Electronic Governor Tester-JT05829 (Serial No. 000376- )

Listing Of Diagnostic Codes

Bleed The Fuel System

Fan Belt Tension Adjustment

Injection Pump Static Timing Adjustment

Slow And Fast Idle Adjustment (Serial No. 000376-)

Slow Idle Adjustment (Serial No. -000375)

Fast Idle Adjustment (Serial No. -000375)

Speed Control Linkage Adjustment (Serial No. -000375)

Speed Control Pedal Adjustment (Serial No. 000376-)

Adjust Fuel Shut-Off Cable (Serial No. -000375)

Do Engine Break-In

Group 25: Test

JT05801 Clamp-On Electronic Tachometer Installation

JT05800 Digital Thermometer Installation

Air Cleaner Element Restriction Indicator Switch Test

Air Intake System Leakage Test

Cooling System Leakage Test

Compression Pressure Test

Dampener Runout Check

Engine Oil Pressure Test

Engine Power Test Using Engine Pulldown

Performance Test Using Turbocharger Boost Pressure

Fuel Line Leakage Test

Radiator Air Flow Test

Section 9015: Electrical System

Group 00: Electrical System

Battery Operation

Battery Specifications

Diagnose Battery Malfunctions

Check Battery Electrolyte Level And Terminals

Procedure For Testing Batteries

Using Booster Batteries-24 Volt System

Bulb Replacement Specifications

Test Procedure For Checking Voltage At Connector

Visually Inspect Electrical System

Electrical Circuit Malfunctions

High Resistance Circuit

Open Circuit

Grounded Circuit

Shorted Circuit

Multimeter

Seven Step Electrical Test Procedure

Diagnostic Flow Charts

Wire Size Information

Pictorial Diagrams

Wiring Diagram And Schematic Information

Reading A System Functional Schematic

Reading A Wiring Diagram

Electrical Schematic Symbols

Diagnose Power Circuit Malfunctions

Power Circuit Operation

Diagnose Starter Circuit Malfunctions

Starter Circuit Operation (Serial Number -000375)

Starter Operation

Start And Engine Controller Circuit Operational Information (Serial Number 000376-)

Start And Engine Controller Circuit Theory Of Operation (Serial No. 000376-)

Transmission Multiple Torque Curves

Fuel Injection Circuit Theory Of Operation

Engine Controller Connector

Engine Controller Connector Signals

Component Identification For Start And Engine Controller Functional Schematic

Wiring And Schematic Diagrams Legend For Start And Engine Controller Circuits

System Functional Schematic Section Legend For Start And Engine Controller Circuits

Start And Engine Controller Circuit (Serial No. 000376-) Functional Schematic

Converter Harness (W1) Wiring Diagram

Converter Harness (W1) Component Location

Engine Controller Harness (W2) Wiring Diagram

Engine Controller Harness (W2) Component Location

Fuel Injection Pump Harness (W3) Wiring Diagram

Fuel Injection Pump Harness (W3) Component Location

Start And Engine Control/Test Circuit Diagnose Malfunctions

Adjusting Foot Throttle Resistor

Diagnose Charging Circuit Malfunctions

Alternator Operation-50 Amp Niehoff (Serial Number -000375)

Alternator Operation-50 Amp Bosch (Serial Number 000376- )

Charging Circuit Operation

Alternator Voltage Output Test-50 Amp Niehoff (Serial Number -000375)

Adjust Alternator Voltage-50 Amp Niehoff (Serial Number -000375)

Alternator Voltage Output Test-50 Amp Bosch (Serial Number 000376- )

Diagnose Logic Module And Warning Alarm Circuit Malfunctions

Logic Module And Warning Alarm Circuit Operation (Serial No. -000270)

Logic Module And Warning Alarm Circuit Operation (Serial No. 000271- )

Logic Module Test In Machine

Logic Module Bench Test

Diagnose Indicator Circuit Malfunctions-Top Row

Indicator Circuits Operation-Top Row

Diagnose Indicator Circuit Malfunctions-Middle Row

Indicator Circuit-Middle Row Operation (Serial Number -000270)

Indicator Circuit-Middle Row Operation (Serial Number 000271- )

Transmission Oil Pressure, Park Brake Indicator, And Low Brake Pressure (Monitor) Test

Pressure Switch And Sender Specifications

Diagnose Horn Circuit Malfunctions

Horn Circuit Operation

Diagnose Gauges And Hour Meter Circuit Malfunctions

Gauges And Hour Meter Circuit Operation

Diagnose Start Aid, Reverse Warning Alarm, And Cigar Lighter Circuit Malfunctions

Start Aid, Reverse Warning Alarm, And Cigar Lighter Circuit Operation

Diagnose Return-To-Dig And Boom Height Kickout Malfunctions

Return-To-Dig And Boom Height Kickout Circuit Operation

Return-To-Dig Adjustment

Boom Height Kickout Adjustment

Diagnose Secondary Steering Circuit Malfunctions

Secondary Steering Circuit Operation

Secondary Steering Controller Bench Test

Diagnose Turn Signal And Flasher Circuit Malfunctions

Turn Signal And Flasher Circuit Operation

Diagnose Drive And Work Light Circuit Malfunctions

Drive And Work Light Circuit Operation

Brake Light Pressure Switch Test

Diagnose Windshield Wiper And Washer Circuit Malfunctions

Windshield Wiper And Washer Circuit Operation

Diagnose Clutch Cut-Off And Park Brake Circuit Malfunctions

Clutch Cut-Off And Park Brake Circuit Operation

Brake Low Pressure Switch (Park Brake) Test

Differential Lock, Downshift, And Transmission Circuit Malfunctions

Differential Lock, Downshift, And Transmission Circuit Operation

Diagnose Radio Circuit Malfunctions

Radio Circuit Operation

Load Center Relay Identification

Load Center Component Location

Electrical System Component Location

Section 9020: Power Train

Group 05: Theory Of Operation

Power Train Component Overview

Torque Converter And Master Clutch Operation

Transmission Operation

Transmission Clutch Operation

Transmission Hydraulic Components

Transmission Pump Operation

Transmission Filter Operation

Transmission Control Valve Operation (Serial Number -000499)

Transmission Control Valve Operation (Serial Number 000500-)

Transmission Solenoid Valve Operation

Transmission Power Flow

Transmission Circuit-First Forward

Transmission Circuit-Fourth Forward

Transmission Circuit-First Reverse

Forward And Reverse Accumulator Operation (Serial Number -000356)

Transmission Circuit Accumulator Operation (Serial Number 000357- )

Transmission Pressure Regulating Valve Housing

Main Pressure Regulating Valve Operation

Transmission Modulation-Full Engagement

Transmission Modulation-Shift Initiated

Master Clutch Modulation-Transmission Clutch Engaged

Cut-Off Valve Operation

Master Clutch Cut-Off Valve Operation

Converter Pressure And Cooler Relief Valve Operation

Lubrication Relief Valve Operation

Brake, Park Brake And Differential Lock Components

Pilot And Brake Pump Operation

Brake Accumulator Operation

Dual Brake Valve Operation

Single Brake Valve Operation

Pressure Reducing Valve Components

Pressure Reducing Valve Operation (Serial Number -000350)

Pressure Reducing Valve Operation (Serial Number 000351-)

Differential Lock, Clutch Cut-Off, And Park Brake Solenoid Valves Operation

Pilot Accumulator Operation

Park Brake Operation

Differential And Differential Lock Operation

Final Drive Operation

Axle Operation

Group 10: System Operational Checks

Power Train Operational Checks

Group 15: Diagnostic Information

Diagnose Transmission System Malfunctions

Diagnose Service Brake Malfunctions

Diagnose Differential/Axle Malfunctions

Diagnose Drive Shaft Malfunctions

Diagnose Park Brake Malfunctions

Isolate Transmission Electrical Malfunctions From Hydraulic/Mechanical Malfunctions

Pressure Regulating Valve Housing Components Identification

Hydraulic Circuit Symbols

Group 20: Adjustments

Hydraulic Brake Bleeding Procedure

Charge Brake Accumulator

Brake Valve Pressure Differential Switch Adjustment

Brake And Differential Lock System Oil Clean-Up Procedure Using Portable Filter Caddy

Brake Pad Inspection

Towing Procedures

Moving Unit With Transmission Electrical Malfunction

Group 25: Tests

JT05801 Clamp-On Electronic Tachometer Installation

JT05800 Digital Thermometer Installation

Transmission Oil Warm-Up Procedure

Brake, Differential Lock, And Hydraulic System Oil Warm-Up Procedure

Transmission Pump Flow Test

Transmission Main Oil Pressure Test

Transmission High And Low Range Clutch Leakage Test

Forward And Reverse Clutch Pressure And Leakage Test

Converter-In Pressure Test

Converter-Out Pressure Test

Converter-Out Flow Test

Torque Converter Leakage Test

Torque Converter Stall Speed Test

Lube Pressure Test

Master Clutch And Clutch Cut-Off Valve Pressure Tests

Master Clutch Leakage Test

Forward, Reverse, And Master Clutch Modulation Test

Transmission Oil Cooler Restriction Test

Pilot And Brake Pump Standby Pressure Test

Pilot And Brake Pump Flow Test

Front Axle Brake Accumulator Precharge Test

Rear Axle Brake Accumulator Precharge Test

Dual Brake Valve Pressure Test

Single Brake Valve Pressure Test

Dual Brake Valve Leakage Test

Single Brake Valve Leakage Test

Brake Accumulator Inlet Check Valve Leakage Test

Pressure Reducing Valve Pressure Test

Pressure Reducing Valve Manifold Leakage Test

Differential Lock Pressure Test

Differential Lock Leakage Test

Axle Bearing Adjustment Check

Section 9025: Hydraulic System

Group 05: Theory Of Operation

Loader And Steering Component Location

Steering Components

Steering Circuit Operation-Right Turn

Main Hydraulic Pump Operation

Steering Pump Operation

Priority Valve Operation

Steering Valve Operation (Serial Number 000401-)

Steering Valve Operation (Serial Number -000400)

Steering Crossover Relief Valve Operation

Steering Accumulator Operation (Serial Number -000400)

Steering Cylinder Operation

Secondary Steering System Operation

Inlet Manifold Operation

Loader Hydraulic System Operation

Loader Control Valve Operation

Boom Section Operation

Bucket Valve Operation

Auxiliary Valve Operation

System Relief Valve Operation Cable Skidder Only (Serial No. -532250)

Circuit Relief Valve Operation

Anticavitation Valve Operation

Pilot Circuit Operation Anticavitation Valve Operation

Pilot Control Valve Operation

Boom And Bucket Cylinders Operation

Hydraulic Reservoir And Filter Operation

Oil Cooler And Bypass Valve Operation

Ride Control Operation-In "On" Position

Ride Control Operation-In "Off" Position

Group 10: System Operational Checks

Hydraulic Operational Checks

Group 15: Diagnostic Information

Diagnose Hydraulic System Malfunctions

Hydraulic Circuit Symbols

Group 20: Adjustments

Hydraulic Oil Clean-Up Procedure Using Portable Filter Caddy

Charge Pilot Accumulator

Charge Steering Accumulator (Serial Number -000400)

Charge Loader Hydraulic System Accumulator

Charge Ride Control Accumulator

Pilot Controller Linkage Adjustment

Boom Height Kickout Adjustment

Return-To-Dig Adjustment

Steering Stop Wear Check

Group 25: Tests

JT05801 Clamp-On Electronic Tachometer Installation

JT05800 Digital Thermometer Installation

Hydraulic Oil Warm-Up Procedure

Cycle Time Test

First And Second Pump Section Combined Flow Test

Pilot Accumulator Precharge Test

Pilot Accumulator Inlet Check Valve Leakage Test

Pilot Controller Pressure Test

Loader System Relief Valve Pressure Test

Loader Circuit Relief Valve Pressure Test

Loader Cylinder Drift Test

Boom And Bucket Cylinder Leakage Test

Hydraulic System Restriction Test

Priority Valve Pressure Test

Priority Valve Relief Cartridge Leakage Test

Priority Valve "LS" Port Flow Test

Steering Crossover Relief Valve Pressure Test

Steering System Leakage Test

Steering Valve Neutral Leakage Test

Oil Cooler Bypass Valve Pressure Test

Oil Cooler Restriction Test

Secondary Steering Pump Relief Valve Pressure Test

Secondary Steering Manifold Primary Check Valve Leakage Test

Secondary Steering Manifold Secondary Check Valve Leakage Test

Section 9031: Heating And Air Conditioning

Group 05: Theory Of Operation

Refrigerant System

Electrical System

Receiver/Dryer Operation

High And Low Pressure Switch

Thermal Amplifier And Thermistor Operation

Expansion Valve Operation

Group 10: System Operational Checks

Air Conditioning Operational Checks

Group 15: Diagnostic Information

Diagnose Air Conditioning Electrical Malfunctions

Group 20: Adjustments

Refrigerant (R-12) Cautions

Check And Add Compressor Oil

Air Conditioning Gauge Set Installation Procedure

Refrigerant Recovery

Evacuate The System

Charge The System

Add Refrigerant To The System

Check And Adjust Compressor Belt Tension

Check Cab Recirculating Air Filter-If Equipped

Group 25: Tests

Refrigerant (R-12) Cautions

Air Conditioning System Test

Operating Pressure Diagnostic Chart

Expansion Valve Bench Test And Adjustment

Thermistor Operating Test And Bench Test

High And Low Refrigerant Pressure Switch Test

Leak Testing

Refrigerant Hoses And Tubing Inspection

Air Conditioning And Heater Circuit Test

John Deere 4WD Loaders 744E Operation and Test Service Manual (TM1454)