Complete service Operation and Test manual with Electrical Wiring Diagrams for John Deere 444H, 544H Loaders & TC44H, TC54H Tool Carriers, with all the shop information to maintain, diagnose, and rebuild like professional mechanics.

John Deere 444H, 544H Loaders & TC44H, TC54H Tool Carriers workshop Diagnosis and Test 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.

TM1604 - John Deere 444H, 544H Loader and TC44H, TC54H Tool Carrier Technical Manual - Operation and Test.PDF
TM1604 - John Deere 444H, 544H Loader and TC44H, TC54H Tool Carrier Technical Manual - Operation and Test.EPUB

Total Pages: 1,150 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
      General Specifications
      Torque Values
      Fuels And Lubricants
   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

tm1604 - 444H, 544H Loader TC44H, TC54H Tool Carrier

Table of Contents

Foreword

Technical Information Feedback Form

Section 9000: General Information

Group 01: Safety Information

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

Decommissioning — Proper Recycling and Disposal of Fluids and Components

Live With Safety

Group 02: General Specifications

444H Specifications

TC44H Specifications

444H High Lift Specifications

Other Information—444H/TC44H

Drain and Refill Capacities—444H/TC44H

544H Specifications

TC54H Specifications

544H High Lift Specifications

Other Information—544H/TC54H

Drain and Refill Capacities—544H/TC54H

Group 03: Torque Values

Hardware Torque Specifications

Keep ROPS Installed Properly

Metric Bolt and Screw Torque Values

Additional Metric Cap Screw Torque Values

Unified Inch Bolt and 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

Diesel Fuel

Lubricity of Diesel Fuel

Low Sulfur Diesel Fuel Conditioner

Diesel Fuel Storage

Fuel Tank

Diesel Engine Oil — Non-Emissions Certified and Certified Tier 1 and Stage I

Transmission, Hydraulic System, Park Brake, And Differential Oil

Grease

Alternative and Synthetic Lubricants

Lubricant Storage

Mixing of Lubricants

Section 9005: Operational Checkout Procedure

Group 10: Operational Checkout Procedure

Complete Machine Operational Checkout

Section 9010: Engine

Group 05: Theory of Operation

PowerTech 4.5 L (4045) and 6.8 L (6068) John Deere Engines

Engine—Sectional View

General Engine Description

Group 15: Diagnostic Information

PowerTech 4.5 L (4045) or 6.8 L (6068) John Deere Engines—Use CTM104

Diagnose Engine Malfunctions

Group 20: Adjustments

PowerTech 4.5 L (4045) or 6.8 L (6068) John Deere Engine—Use CTM104

Slow and Fast Idle Adjustment

Speed Control Linkage Adjustment

Group 25: Tests

PowerTech 4.5 L (4045) and 6.8 L (6068) John Deere Engine—Use CTM104

Display Monitor Tachometer

Monitor Display Unit-User Diagnostics Menu-Engine Sensors (d04)

Air Intake System Leakage Test

Radiator Air Flow Test

JT05529 Airflow Meter Test Record

Engine Power Test Using Engine Pull down

Engine Power Test Using Turbocharger Boost Pressure

Injection Pump Timing

Fuel Line Leakage Test

Section 9015: Electrical System

Group 05: System Information

Electrical System Visual Inspection

Electrical Circuit Malfunctions

High Resistance Circuit

Open Circuit

Grounded Circuit

Shorted Circuit

Sensor Circuit Shorted to Power

Sensor Circuit Shorted to Itself

Sensor Circuit Shorted to Ground

Multimeter

Seven Step Electrical Test Procedure

Schematic, Wiring Diagram, and Component Location Information

Reading a System Functional Schematic

Reading a Wiring Diagram

Reading a Component Location Diagram

Reading a Connector End View Diagram

Electrical Schematic Symbols

Group 10: System Diagrams

Fuse (Blade-Type) Color Codes

Fuse Specifications

Component Identification Table

Functional Schematic and Component Location Legend

System Functional Schematic Section Legend

System Functional Schematic

Loader Frame Harness (Without Tool Carrier) (W2) Component Location

Load Center Harness (W3) Component Location

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

Front Console Harness (W4) Component Location

Engine Frame Harness (W5) Component Location

Engine Harness (W6) and Engine Oil Pressure Switch Harness (W18) Component Location

Engine Air Heater Harness (W7) Component Location

Return-to-Dig Harness (Without Tool Carrier) (W8) Component Location

Ride Control Harness (W9) Component Location

Transmission Harness (W10) Component Location

Loader Frame Harness (With Tool Carrier) (W11) Component Location

Return-to-Dig Harness (With Tool Carrier) (W12) Component Location

Rear Frame Harness (W13) Component Location

CAN Terminator Harness (W14) Component Location

License Plate Light Harness (W15) Component Location

Pin Disconnect Harness (W16) and Axle Disconnect Harness (W33) Component Location

Secondary Steering Switch Harness (W17) Component Location

Cab Work Lights Harness (W19) Component Location

Blower/Air Conditioning Harness (W20) and Component Location Drawing

Connectors For Blower And A/C Harness (W20)

Converter and Power Plug Harness (W21) Component Location

Secondary Steering Pump Motor Harness (W23) Component Location

Battery (Cables) Harness (W24) Component Location

Sump Tank Harness (W31) Component Location

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

Radio Harness (W34) Component Location (S.N. 572399—578909)

Radio Harness (W34) Component Location (S.N. 578910—)

Electric Air Adjust Seat Harness (W36) Component Location

Group 15: Sub-System Diagnostics

Power Circuit Operational Information

Power Circuit Theory Of Operation

Power Circuit Functional Schematic

Charging Circuit Operational Information

Charging Circuit Theory Of Operation

Charging Circuit Functional Schematic

Start Circuit Operational Information

Start Circuit Theory Of Operation

Start Circuit Functional Schematic

Engine Air Heater Circuit Operational Information

Engine Air Heater Circuit Theory Of Operation

Engine Air Heater Circuit Functional Schematic

Fuel Shutoff Circuit Operational Information

Fuel Shutoff Circuit Theory of Operation

Fuel Shutoff Circuit Functional Schematic

Starting Aid Circuit Operational Information

Starting Aid Circuit Theory of Operation

Starting Aid Circuit Functional Schematic

Ride Control Circuit Specifications

Ride Control Circuit Operational Information

Ride Control Circuit Theory of Operation (S.N. —582200)

Ride Control Circuit Theory of Operation (S.N. 582201— )

Ride Control Circuit Functional Schematic

Monitor Display Unit Circuit Specifications—Switches And Senders

Monitor Display Unit Circuit Specifications—Gauge Ranges

Monitor Display Unit Gauge Sensor Specifications and Diagnostic Display

Monitor Display Unit Circuit Operational Information

Monitor Display Unit Circuit Theory Of Operation—Function

Monitor Display Unit Circuit Theory of Operation—Modes of Operation

Monitor Display Unit Circuit Theory Of Operation—Caution And Warning Lights And Gauges

Monitor Display Unit Circuit Theory Of Operation—Switches, Sensors And Indicator Lights

Monitor Display Unit Circuit Functional Schematic

Monitor Display Unit—Accessing Menus

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—Service 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 (d05)

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

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

Monitor Display Unit—User Diagnostics Menu—Machine I.D. Mode (d10)

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

Monitor Display Unit—Service Menu—Tell-Tale Service 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—Access Service Menu

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 Service Codes

Chassis Computer Unit Circuit Operational Information

Chassis Computer Unit Circuit Theory Of Operation

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—Battery Monitoring Signals

Chassis Computer Unit Circuit Connector Pin Locations For 30—Pin Connector

Chassis Computer Unit Circuit Connector Pin Locations For 60—Pin Connector

Transmission Control Unit Circuit Specifications

Transmission Control Unit Circuit Operational Information

Transmission Control Unit Circuit Theory Of Operation

Transmission Control Unit Circuit Functional Schematic

Transmission Control Unit Connector Pin Locations

Transmission Control Valve 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 And Park Brake Sensing and Park Brake Release Circuit Specifications

Back-Up Alarm And Park Brake Sensing and Park Brake Release Circuit Operational Information

Back-up Alarm And Park Brake Sensing and Park Brake Release Circuit Theory of Operation

Back-up Alarm And Park Brake Sensing and Park Brake Release Circuit Functional Schematic

Pilot Enable And Boom Down Circuit Operational Information

Pilot Enable And Boom Down Circuit Theory Of Operation

Pilot Enable And Boom Down Circuit Functional Schematic

Return to Carry, Boom Height Kickout and Return To Dig Circuit Operational Information

Return To Carry, Boom Height Kickout And Return To Dig Circuit Theory Of Operation

Return To Carry, Boom Height Kickout and Return To Dig Circuit Functional Schematic

Differential Lock, Pin Disconnect, and Axle Disconnect Circuit Functional Schematic

Front Wiper Circuit Functional Schematic

Rear Wiper Circuit Functional Schematic

Secondary Steering Circuit Specifications

Secondary Steering Circuit Operational Information

Secondary Steering Circuit Theory Of Operation

Secondary Steering Circuit Functional Schematic

Horn Circuit Functional Schematic

Flasher and Turn Signal Functional Schematic

Tail and Marker Light Circuit Theory of Operation

Tail and Marker Light Circuit Functional Schematic

Drive Light Circuit Theory of Operation

Drive Light Circuit Functional Schematic

Service Brake And Light Circuit Specifications

Service Brake And Light Circuit Operational Information

Service Brake And Light Circuit Theory Of Operation

Service Brake and Light Circuit Functional Schematic

Cab Work Light Circuit Operational Information

Cab Work Light Circuit Theory of Operation

Cab Work Light Circuit Functional Schematic

Converter and Radio Circuit Functional Schematic

Group 20: References

Alternators And Starting Motors—Use CTM77

Alternator Check

Battery Specifications

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

Check Controller

Clutch Cutoff Sensor Check and Adjustment

Continuity Check For Sensors With Two Wires

Continuity Check For Sensors With Three Wires

Electronic Controllers Block Diagram

Service Codes—How to Use Listing for Diagnostics

Service Codes—After Machine Repair

Service Code Interpretation

Service Codes Quick Reference List

Section 9020: Power Train

Group 05: Theory of Operation

Transmission Clutch Engagement And Solenoids Activated

Power Train Component Location

Drive Dampener

Torque Converter Operation

Transmission Operation

Transmission Side View

Transmission Front View

Transmission Test Points

Transmission Operation—First Gear Forward

Transmission Operation—Fourth Gear Forward

Transmission Operation—First Gear Reverse

Transmission Filter Bypass Valve (444H S.N. —573603) (544H S.N. —573381)

Transmission Filter Bypass Valve (444H S.N. 573604—) (544H S.N. 573382—)

Transmission Control Valve Components

Transmission Pressure Regulating Circuit

Modulation Circuit

Transmission Clutch Modulation

Thermal Bypass Valve Operation

John Deere TeamMate™ III Axles

Limited Slip Differential Operation

Differential Lock Operation

Axle Disconnect Operation

Axle Shaft And Housing

Axle Circulation Motor and Dual Pumps

Driveline Bearing—Park Brake Operation

Group 15: Diagnostic Information

Diagnose Transmission System Malfunctions

Diagnose Differential And Axle Malfunctions

Diagnose Service Brake Malfunctions

Diagnose Drive Line Malfunctions

Diagnose Park Brake Malfunctions

Park Brake Will Not Release

Hydraulic Circuit Symbols

Transmission Control System

Power Train Component Location

Transmission Control Circuit—First Forward

Group 20: Adjustments

External Service Brake Inspection

Transmission Controller Unit (TCU)—Electronic Clutch Adjustment (444H S.N. 573604— ) (544H S.N. 573382— )

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 (444H S.N. —573603) (544 S.N. —573381)

Transmission Pump Flow Test (444H S.N. 573604—) (544 S.N. 573382—)

Transmission System Pressure Test

Transmission Clutch Pressure Test

Transmission Element Leakage Test

Lube Pressure 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

Axle Recirculation Dual Pump Flow and Temperature Tests

Axle Recirculation Motor Flow Test

Axle Breather Test

Axle Recirculation Pump Inlet Suction Check

Section 9025: Hydraulic System

Group 05: Theory of Operation

Loader Hydraulic System

Hydraulic Pump

Hydraulic Pump Control

Hydraulic Pump Control—Neutral

Hydraulic Pump Control—Function Metering

Hydraulic Pump Control—Full Flow

Hydraulic Pump Control—Function Bottomed

Steering System Components

Steering Valve Operation

Secondary Steering System Operation

Secondary Steering Inlet Manifold Operation

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— )

Brake Hydraulic System

Brake Accumulator

Brake Valve

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

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

Pilot Controller—Boom Float

Pilot Controller—Bucket Rollback

Pilot Orifice Check Valve For All Control Valve Sections

Loader Control Valve

Boom Section—Boom Down And Steering

Boom Section—Boom Raise And Bucket Dump

Bucket Section—Boom Raise and Bucket Dump

Bucket Section—Boom Raise and Bucket Dump (444H High Lift Option Only)

Auxiliary Section—Operating And Boom Raise

Auxiliary Sections—Stroke Adjusters (If Equipped)

Bucket Section Operation—Tool Carrier

Outlet Section—Steering, Loader in Neutral

Load Sense Circuit Operation—Neutral

Load Sense Circuit—Steering

Load Sense Circuit—Steering and Boom Down

Load Sense Circuit—Boom Raise and Bucket Dump

Relief Valve Operation

Load Sense Relief Valve Operation

Circuit Relief Valve Operation

Anti-Cavitation Valve Operation

Cylinder Operation—444H Bucket (S.N. —577619)

Cylinder Operation—444H Boom

Cylinder Operation—TC44H, 544H, (444H S.N. 577620— ) and TC54H Tilt and Bucket

Cylinder Operation—TC44H, 544H and TC54H Boom

Steering Cylinder Operation (S.N. —568518)

Steering Cylinder Operation (S.N. 568519— )

Return Filter Operation

Ride Control “ON” Normal Operation (S.N —582200)

Ride Control Operation—In The "ON" Position—Bucket Dump (S.N —582200)

Ride Control Operation—In the “Off” Position (S.N —582200)

Ride Control “ON” Normal Operation (S.N 582201—)

Ride Control Operation—In The "ON" Position—Bucket Dump (S.N 582201—)

Ride Control Operation—In The “Off” Position (S.N 582201—)

Group 15: Diagnostic Information

Diagnose Hydraulic System Malfunctions

Hydraulic Circuit Symbols

Loader Hydraulic System Component Location

Tool Carrier Hydraulic System Component Location (S.N. —571404)

Tool Carrier Hydraulic System Component Location (S.N. 571405— )

Brakes And Steering Hydraulic System

Hydraulic System Schematic—Neutral (S.N. —571404)

Hydraulic System Schematic—Neutral (S.N. 571405— )

Hydraulic System Schematic—Steering (S.N. —571404)

Hydraulic System Schematic—Steering (S.N. 571405— )

Hydraulic System Schematic—Steering and Boom Down (S.N. —571404)

Hydraulic System Schematic—Steering and Boom Down (S.N. 571405— )

Hydraulic System Schematic—Boom Raise and Bucket Dump (S.N. —571404)

Hydraulic System Schematic—Boom Raise and Bucket Dump (S.N. 571405— )

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 (444H S.N. —581004) (544H S.N. —579834)

Return-To-Dig Adjustment (444H S.N. 581005—) (544H S.N. 579835—)

Pilot Controller Adjustment (Two Lever) (S.N. 585561—)

Ride Control Accumulator Discharge Procedure

Ride Control Accumulator Gas Charge Procedure

Ride Control Accumulator Draining Procedure

Hydraulic Pump Stroke Limiter Adjustment

Auxiliary Valve Section—Stroke Adjustment (If Equipped)

Group 25: Test

Hydraulic Oil Warm-Up Procedure

JT02156A Digital Pressure and Temperature Analyzer Kit Installation

JT05800 Digital Thermometer Installation

Display Monitor Tachometer

Display Monitor Hydraulic Oil Temperature

Hydraulic Pump Margin and Low Standby Pressure Adjustment Test

Hydraulic System Maximum Pressure Test and Adjustment

Hydraulic Pump Flow Test

Hydraulic Pump Case Drain Test

Loader Relief and Circuit Relief Valve Pressure Test

Loader Cylinder Drift Test

Boom, Bucket and Steering Cylinder Leakage Test

Steering Valve Leakage Test

Steering Valve Drift 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

Brake Valve Pressure Test

Brake Valve Leakage Test

Brake Accumulator Inlet Check Valve Leakage Test

Brake And PRV Accumulator Inlet Check Valve Leakage Test

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

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

Differential Lock Pressure Test

Pressure Reducing Valve Manifold Leakage Test

Hydraulic Oil Filter Inspection Procedure

Section 9031: Heating And A/C

Group 05: Theory of Operation

Proper Refrigerant Handling

R134a Refrigerant Cautions

Refrigerant Theory of Operation

Heater, Pressurizer and Air Conditioning Blower Circuit Operational Information

Heater, Pressurizer and Air Conditioning Blower Circuit Theory of Operation

Heater, Pressurizer and Air Conditioning Circuit Functional Schematic

Compressor Operation

Condenser Operation

Receiver-Dryer Operation

Expansion Valve Operation

Freeze Control Switch Operation

Compressor Relief Valve Operation

Evaporator Core Operation

Heater Core Operation

Temperature Control, Blower Speed Switch and Air Conditioning Switch Operation

Air Conditioning Low Pressure Switch

Air Conditioning High Pressure Switch

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

Group 20: Adjustments

Special or Essential Tools

Service Equipment and Tools

Other Materials

Specifications

R134A Compressor Oil Information

R134A Refrigerant Cautions

R134A Compressor Oil Charge Check

R134A Compressor Oil Removal

R134A Component Oil Charge

R134A Refrigerant Recovery/Recycling and Charging Station Installation Procedure

Recover R134A System

Evacuate R134A System

Charge R134A System

Air Conditioner System Cleaning Procedures

Purge Air Conditioner System

Flush Air Conditioner System

Group 25: Tests

Special or Essential Tools

Service Equipment and Tools

Air Conditioning System Fittings Reference Chart

Specifications

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 4WD Loaders 444H, 544H & Tool Carriers TC44H, TC54H Operation and Test Service Manual (TM1604)