Complete Operation and Test manual with Electrical Wiring Diagrams for John Deere 4WD Loaders 544G, 544G LL, 544G TC, 624G, 644G, with all the technical information to maintain, test, repair, and service like professional mechanics.

John Deere 4WD Loaders 544G, 544G LL, 544G TC, 624G, 644G workshop Diagnostics 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.

TM1529 - John Deere 544G, 544G LL, 544G TC, 624G and 644G 4WD Loader Technical Manual - Repair.PDF
TM1529 - John Deere 544G, 544G LL, 544G TC, 624G and 644G 4WD Loader Technical Manual - Repair.epub

Total Pages: 1,104 pages
File Format: PDF/EPUB/MOBI/AZW (PC/Mac/Android/Kindle/iPhone/iPad; bookmarked, ToC, Searchable, Printable)
Language: English

MAIN SECTIONS
 Foreword
   General Information
      Safety Information
      General Specifications
      Torque Values
      Fuels And Lubricants
   Operational Checkout Procedure
      Operational Checkout Procedure
   Engine Operation And Tests
      Theory Of Operation
      System Operational Checks
      Diagnostic Information
      Adjustments
      Tests
   Electrical System
      System Information
      System Diagrams
      Sub-System Diagnostics
      References
   Power Train Operation And Tests
      Theory Of Operation
      System Operational Checks
      Diagnostic Information
      Adjustments
      Tests
   Hydraulic System Operation And Tests
      Theory Of Operation
      System Operational Checks
      Diagnostic Information
      Adjustments
      Test
   Air Conditioning System
      Theory Of Operation
      System Operational Checks
      Diagnostic Information
      Adjustments
      Tests

tm1529 - 544G, 544G LL, 544G TC, 624G, 644G 4WD Loader

Table of Contents

Foreword

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

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 And Prepare For Service Safely

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

544G Specifications

544G Drain And Refill Capacities

544G LL Specifications

544G LL Drain And Refill Capacities

544G TC Specifications

544G TC Drain And Refill Capacities

624G Specifications

624G Drain And Refill Capacities

644G Specifications

644G Drain And Refill Capacities

Group 03: Torque Values

Hardware Torque Specifications

ROPS Torque Specifications

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

Fuel Specifications

Storing Fuel

Do Not Use Galvanized Containers

Fuel Tank

Engine Oil

Hydraulic System Oil And Differential Oil

Transmission Oil

Grease

Alternative and Synthetic Lubricants

Lubricant Storage

Mixing of Lubricants

Diesel Engine Coolant (engine with wet sleeve cylinder liners)

Section 9005: Operational Checkout Procedure

Group 10: Operational Checkout Procedure

Operational Checkout Record Sheet—544G, 624G, And 644G

Complete Machine Operational Checkout

Section 9010: Engine Operation And Tests

Group 05: Theory Of Operation

Air Cleaner Operation

Fuel System Operation—544G And 624G

Fuel System Operation—644G

Group 10: System Operational Checks

Engine Operational Checks

Group 15: Diagnostic Information

Diagnose Engine Malfunctions

Coolant Requirements

Group 20: Adjustments

JT05801 Clamp-On Electronic Tachometer Installation

JT05800 Digital Thermometer Installation

Display Monitor Tachometer

JT07158 TIME TRAC TIME TRAC is a registered trademark of the Stanadyne Automotive Corp. Installation

Injection Pump Timing

Fan Belt Tension Adjustment

Slow And Fast Idle Adjustment—544G, 624G

Slow Idle Adjustment—644G

Fast Idle Adjustment—644G

Speed Control Linkage Adjustment

Fuel Shut-Off Solenoid Adjustment—644G

Primary Fuel Filter, Drain Water—544G, 624G

Primary Fuel Filter, Drain Water—644G

Bleed The Fuel System—544G, 624G

Bleed The Fuel System—644G

Group 25: Tests

Display Monitor Tachometer

Display Monitor Hydraulic Oil Temperature

Display Monitor Hydraulic Oil Pressure

Air Filter Restriction Indicator Switch Test

Radiator Cap Pressure Test

Cooling System Pressure Test

Radiator Air Flow Test

Engine Power Test Using Engine Pulldown

Engine Power Test Using Turbocharger Boost Pressure

Compression Pressure Test

Air Intake System Leakage Test

Fuel Supply Pump Pressure Test

Fuel Line Leakage Test

Section 9015: Electrical System

Group 05: System Information

Procedure To Isolate Whether Problem In Transmission Control System Is Electrical Or Hydraulic

Example Of Simple Electrical Test To Find Problem

Visually Inspect Electrical System

Electrical Circuit Malfunctions

High Resistance Circuit

Open Circuit

Grounded Circuit

Shorted Circuit

Multimeter

Seven Step Electrical Test Procedure

Wiring Diagram And Schematic Information

Reading A System Functional Schematic

Reading A Wiring Diagram

Electrical Schematic Symbols

Group 10: System Diagrams

Component Identification Table

Fuse Block

Wiring And Schematic Diagrams Legend

System Functional Schematic Section Legend

System Functional Schematic

Steering Column Harness (W2) Wiring Diagram

Steering Column Harness (W2) Component Location

Loader Frame Harness (W3) Wiring Diagram

Loader Frame Harness (W3) Component Location

Transmission Harness (W4) Wiring Diagram

Transmission Harness (W4) Component Location

Load Center Harness (W5) Wiring Diagram (Page 1 of 4)

Load Center Harness (W5) Wiring Diagram (Page 2 of 4)

Load Center Harness (W5) Wiring Diagram (Page 3 of 4)

Load Center Harness (W5) Wiring Diagram (Page 4 of 4)

Load Center Harness (W5) Component Location

Load Center Harness (W5) Component Location—Continued (Detail A)

Load Center Harness (W5) Component Location—Continued (Detail B)

Load Center Harness (W5) Component Location—Continued (Detail C)

Load Center Harness (W5) Component Location—Continued (Detail D)

Load Center Harness (W5) Component Location—Continued (Detail E)

Canopy Work Lights Harness (W6) Wiring Diagram

Canopy Work Lights Harness (W6) Component Location

Cab Work Lights Harness (W7) Wiring Diagram

Cab Work Lights Harness (W7) Component Location

Left Panel Temperature Control Harness (W8) Wiring Diagram

Left Panel Temperature Control Harness (W8) Component Location

Engine Frame Harness (W9) Wiring Diagram

Engine Frame Harness (W9) Component Location

Engine Harness (W10) Wiring Diagram

Engine Harness (W10) Component Location

Rear Frame Harness (W11) Wiring Diagram

Rear Frame Harness (W11) Component Location

A/C Compressor Harness (W12) Wiring Diagram

A/C Compressor Harness (W12) Component Location

Secondary Steering Harness (W13) Wiring Diagram

Secondary Steering Harness (W13) Component Location

Start Aid Lead (W14) Wiring Diagram

Start Aid Lead (W14) Component Location

Ride Control Harness (W15) Wiring Diagram

Ride Control Harness (W15) Component Location

Pin Disconnect Harness (W16) Wiring Diagram

Pin Disconnect Harness (W16) Component Location

Group 15: Sub-System Diagnostics

Special Or Essential Tools

Power Circuit Operational Information

Power Circuit Theory Of Operation

Power Circuit Functional Schematic

Power Circuit Diagnostics

Charging Circuit Operational Information

Charging Circuit Theory Of Operation

Charging Circuit Functional Schematic

Charging Circuit Diagnostics

Start Aid And Fuel Control Circuit Operational Information

Start Aid And Fuel Control Circuit Theory Of Operation

Start Aid And Fuel Control Circuit Functional Schematic

Start Aid And Fuel Control Circuit Diagnostics

Park Brake Sensing/Clutch Cutoff/Quickshift/Backup Alarm Circuit Specifications

Park Brake Sensing/Clutch Cutoff/Quickshift/Backup Alarm Circuit Operational Information

Park Brake Sensing/Clutch Cutoff/Quickshift/Backup Alarm Circuit Theory Of Operation

Park Brake Sensing/Clutch Cutoff/Quickshift/Backup Alarm Circuit Functional Schematic

Park Brake Sensing/Clutch Cutoff/Quickshift/Backup Alarm Circuit Diagnostics

Transmission Control Circuit Operational Information

Transmission Control Circuit Theory Of Operation

Transmission Control Circuit Functional Schematic

Jumper Wire For Display Monitor

Replace CPC, Large MATE-N-LOK and METRIMATE CPC, MATE-N-LOK, and METRIMATE are trademarks of AMP Inc. Pin Type Connectors

Pin Identification On Transmission Controller

Procedure To Isolate Whether Problem In Transmission Control System Is Electrical Or Hydraulic

Transmission Control Circuit Diagnostics

Start Circuit Operational Information

Start Circuit Theory Of Operation

Start Circuit Functional Schematic

Start Circuit Diagnostics

Park Brake Circuit Operational Information

Park Brake Circuit Theory Of Operation

Park Brake Circuit Functional Schematic

Park Brake Circuit Diagnostics

Secondary Steering Circuit Specifications

Secondary Steering Circuit Operational Information

Secondary Steering Circuit Theory Of Operation

Secondary Steering Circuit Functional Schematic

Secondary Steering Circuit Diagnostics

Differential Lock And Boom Down Circuit Operational Information

Differential Lock And Boom Down Circuit Theory Of Operation

Differential Lock And Boom Down Circuit Functional Schematic

Differential Lock And Boom Down Circuit Diagnostics

Switch Inputs To Monitor Circuit Specifications

Switch Inputs To Monitor Circuit Operational Information

Switch Inputs To Monitor Circuit Theory Of Operation

Switch Inputs To Monitor Circuit Functional Schematic

Switch Inputs To Monitor Circuit Diagnostics

Electronic Monitor Signals Circuit Operational Information

Electronic Monitor Signals Circuit Theory Of Operation

Electronic Monitor Signals Circuit Functional Schematic

Electronic Monitor Signals Circuit Diagnostics

Electronic Monitor And Gauge Inputs Circuit Specifications

Electronic Monitor/Gauge Inputs Circuit Operational Information

Electronic Monitor/Gauge Inputs Circuit Theory Of Operation

Electronic Monitor/Gauge Inputs Circuit Functional Schematic

Electronic Monitor/Gauge Inputs Circuit Diagnostics

Boom Height Kickout And Return-To-Dig Circuit Operational Information

Boom Height Kickout And Return-To-Dig Circuit Theory Of Operation

Boom Height Kickout And Return-To-Dig Circuit Functional Schematic

Boom Height Kickout And Return-To-Dig Circuit Diagnostics

Front And Rear Wiper Circuit Operational Information

Front And Rear Wiper Circuit Theory Of Operation

Front And Rear Wiper Circuit Functional Schematic

Front And Rear Wiper Circuit Diagnostics

Brake Light Circuit Specifications

Brake Light Circuit Operational Information

Brake Light Circuit Theory Of Operation

Brake Light Circuit Functional Schematic

Brake Light Circuit Diagnostics

Heater/Pressurizer Circuit Operational Information

Heater/Pressurizer Circuit Theory Of Operation

Heater/Pressurizer Circuit Functional Schematic

Heater/Pressurizer Circuit Diagnostics

Air Conditioning Circuit Specifications

Air Conditioning Circuit Operational Information

Air Conditioning Circuit Theory Of Operation

Air Conditioning Circuit Functional Schematic

Air Conditioning Circuit Diagnostics

Defroster Pressurization Circuit Operational Information

Defroster Pressurization Circuit Theory Of Operation

Defroster Pressurization Circuit Functional Schematic

Defroster Pressurization Circuit Diagnostics

Turn Signal And 4-Way Flasher Circuit Operational Information

Turn Signal And 4-Way Flasher Circuit Theory Of Operation

Turn Signal And 4-Way Flasher Circuit Functional Schematic

Turn Signal And 4-Way Flasher Circuit Diagnostics

Cab And Canopy Work Light Circuit Operational Information

Cab And Canopy Work Light Circuit Theory Of Operation

Cab And Canopy Work Light Circuit Functional Schematic

Cab And Canopy Work Light Circuit Diagnostics

Drive Light/Dome Light Circuit Operational Information

Drive Light/Dome Light Circuit Theory Of Operation

Drive Light/Dome Light Circuit Functional Schematic

Drive Light/Dome Light Circuit Diagnostics

Door Release/Radio/Horn/Rotary Beacon Circuit Operational Information

Door Release/Radio/Horn/Rotary Beacon Circuit Theory Of Operation

Door Release/Radio/Horn/Rotary Beacon Circuit Functional Schematic

Door Release/Radio/Horn/Rotary Beacon Circuit Diagnostics

Pin Disconnect/Ride Control/Spare Circuit Operational Information

Pin Disconnect/Ride Control/Spare Circuit Theory Of Operation

Pin Disconnect/Ride Control/Spare Circuit Functional Schematic

Pin Disconnect/Ride Control/Spare Circuit Diagnostics

Group 20: References

Battery Specifications

Battery Operation

Diagnose Battery Malfunctions

Check Battery Electrolyte Level And Terminals

Procedure For Testing Batteries

Using Booster Batteries—12 Volt System

Starter Operation

Alternator Operation—95 Amp Or 135 Amp Bosch

Accessing Monitor Service Code Display

Monitor Service Code Interpretation

Program Monitor Display To Match Machine

Calibrate Tachometer

Transmission Electrical Circuit Test Procedure

Jumper Wire For Display Monitor

Replace CPC, Large MATE-N-LOK and METRIMATE CPC, MATE-N-LOK, and METRIMATE are trademarks of AMP Inc. Pin Type Connectors

Transmission Sensor Adjustment

Disconnecting Tab Retainer Connectors

Secondary Steering Controller Bench Test

Section 9020: Power Train Operation And Tests

Group 05: Theory Of Operation

Clutch Engagement and Solenoid Activation Charts

Power Train Component Overview

Drive Dampener

Torque Converter Operation

Transmission Operation—Neutral

Transmission Operation—1st Gear Forward

Transmission Operation—2nd Gear Forward

Transmission Operation—3rd Gear Forward

Transmission Operation—4th Gear Forward

Transmission Operation—1st Gear Reverse

Transmission Operation—2nd Gear Reverse

Transmission Operation—3rd Gear Reverse

Clutch Operation

Transmission Hydraulic Components

Transmission Hydraulic System

Transmission Pump Operation

Transmission Control Valve Components (5-Solenoid Valve)

Modulation Components And Shift Time (5-Solenoid Valve)

Completed Shift—First Speed Forward (5-Solenoid)

Shift Modulation Starts For 2nd, 3rd, Or 4th (5-Solenoid)

Shift Modulation For 2nd, 3rd, And 4th (5-Solenoid)

Completed Shift Modulation For 2nd, 3rd, Or 4th (5-Solenoid)

Transmission Clutch Engagement And Solenoids Activated (5-Solenoid)

Third Speed Neutral (5-Solenoid)

First Speed—Forward (5-Solenoid)

Second Speed—Forward (5-Solenoid)

Third Speed—Forward (5-Solenoid)

Fourth Speed—Forward (5-Solenoid)

First Speed—Reverse (5-Solenoid)

Second Speed—Reverse (5-Solenoid)

Third Speed—Reverse (5-Solenoid)

Thermal Bypass Valve Operation

Transmission Control Valve Components (6-Solenoid Valve)

Modulation Components And Shift Time (6-Solenoid Valve)

Control Valve In Neutral (6-Solenoid)

Transmission Clutch Engagement And Solenoids Activated (6-Solenoid)

Shift Modulation (6-Solenoid)

First Speed—Forward (6-Solenoid)

Second Speed—Forward (6-Solenoid)

Third Speed—Forward (6-Solenoid)

Fourth Speed—Forward (6-Solenoid)

First Speed—Reverse (6-Solenoid)

Second Speed—Reverse (6-Solenoid)

Third Speed—Reverse (6-Solenoid)

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

Axle Disconnect Operation

Brake Hydraulic System Operation

Brake Pump Operation

Brake Pump Pressure Compensator—At Standby

Pressure Compensator—Pump Going Into Stroke

Brake Accumulator Operation

Wet Chambered Brake Valve Operation

Park Brake Operation

Pressure Reducing Valve—Differential Lock Off, Park Brake On

Pressure Reducing Valve—Differential Lock On, Park Brake Off

Hydraulic Tank Operation

Group 10: System Operational Checks

Power Train Operational Checks

Group 15: Diagnostic Information

Procedure To Isolate Whether Transmission Control System Problem Is Electrical Or Hydraulic

Diagnose Transmission System Malfunctions

Diagnose Service Brake Malfunctions

Diagnose Differential/Axle Malfunctions

Diagnose Drive Line Malfunctions

Diagnose Park Brake Malfunctions

Hydraulic Circuit Symbols

Brake, Differential Lock, And Boom Lower Circuit Schematic

Power Train And Brakes System Component Location Diagram

First Forward Schematic

Group 20: Adjustments

Front Axle Disconnect Adjustment

Clutch Cut-Off Adjustment

Adjust Park Brake (S.N. 788774—)

External Service Brake Inspection

Hydraulic Brake Bleeding Procedure

Charge Brake Accumulator

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

Transmission Sensor Adjustment

Group 25: Tests

JT05801 Clamp-On Electronic Tachometer Installation

JT05800 Digital Thermometer Installation

Display Monitor Tachometer

Transmission Oil Warm-Up Procedure

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

Transmission Pump Flow Test

Transmission System Pressure, Element Leakage, And Shift Modulation Test

Transmission Lube Pressure Test

Converter Relief Pressure Test

Converter-In Pressure Test

Converter-Out Pressure Test

Converter-Out Flow Test

Transmission Oil Cooler Backflush Procedure

Transmission Oil Cooler Restriction Test

Pressure Reducing Valve Manifold Leakage Test

Transmission Oil Cooler Thermal Bypass Valve Test

Transmission Oil Cooler Bypass Valve Pressure Test

Torque Converter Stall Speed Test

Brake Pump Flow Test

Brake Pump Standby Pressure Test

Brake Accumulator Precharge Test

Brake Valve Pressure Test

Brake Valve Leakage Test

Brake Accumulator Inlet Check Valve Leakage Test

Park Brake Pressure Test

Differential Lock Pressure Test

Differential Lock Leakage Test

Axle Bearing Adjustment Check

No-Spin Differential Test

Section 9025: Hydraulic System Operation And Tests

Group 05: Theory Of Operation

Main Hydraulic Pump Operation

Steering System Components Operation

Steering Circuit Operation—Right Turn

Priority Valve Operation

Steering Valve Operation

Steering Cylinder Operation

Secondary Steering System Operation

Secondary Steering Inlet Manifold Operation

Loader Hydraulic System Operation

Pressure Reducing Valve—Secondary Boom Lower Operation

Pilot Controller Operation (Serial Number —563542)

Pilot Controller—Boom Float (Serial Number 563543—)

Pilot Controller—Bucket Rollback (Serial Number 563543— )

Boom Section Operation

Bucket And Boom Section Pilot Orifice Check Valve

Bucket Section Operation—544G, 624G, And 644G

Bucket Section Operation—544G TC And 544G LL

Auxiliary Section Operation

System Relief Valve Operation

Circuit Relief Valve Operation

Anti-Cavitation Valve Operation

Loader Cylinder Information

Return Filter Operation

Hydraulic Reservoir Operation

Pin Disconnect Circuit Operation—544G TC

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

Main Hydraulic System Component Location

Main Hydraulic System Schematic

Hydraulic System Component Location-544G TC & 544G LL

Group 20: Adjustments

Hydraulic Oil Clean-Up Procedure Using Portable Filter Caddy

Boom Height Kickout Adjustment

Return-To-Dig Adjustment

Ride Control Accumulator Discharge Procedure—If Equipped

Ride Control Accumulator Gas Charge Procedure—If Equipped

Ride Control Accumulator Draining Procedure

Group 25: Test

JT05801 Clamp-On Electronic Tachometer Installation

JT05800 Digital Thermometer Installation

Display Monitor Tachometer

Hydraulic Oil Warm-Up Procedure

Main Hydraulic Pump Flow Test

Loader System And Circuit Relief Valve Pressure Test

Hydraulic System Restriction 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 Pressure Test

Priority Valve "LS" Port Flow Test

Priority Valve Relief Cartridge Leakage 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 (Serial Number —563542)

Pilot Control Valve Pressure Test (Serial Number 563543—)

Pressure Reducing Valve Pressure Test

Cycle Time Test

Hydraulic Oil Filter Inspection Procedure

Pin Disconnect Solenoid Valve Leakage Test

Pin Disconnect Cylinder Leakage Test

Section 9031: Air Conditioning System

Group 05: Theory Of Operation

Proper Refrigerant Handling

R12 And R134a Refrigerant Cautions

Refrigerant Theory Of Operation

Air Conditioner Circuit Operational Information

Air Conditioning Circuit Theory Of Operation

Air Conditioning Circuit Schematic

Defroster Pressurization Circuit Operational Information

Defroster Pressurization Circuit Operation

Heater/Pressurizer Circuit Operational Information

Heater/Pressurizer Circuit Theory Of Operation

Receiver/Dryer Operation

Expansion Valve Operation

Compressor Relief Valve Operation

Temperature Control

Group 10: System Operational Checks

Air Conditioning Operational Checks

Group 15: Diagnostic Information

Diagnose Air Conditioning Electrical Malfunctions

Air Conditioning Component Location Drawing

Group 20: Adjustments

Special Or Essential Tools

Proper Refrigerant Handling

R12 And R134a Refrigerant Cautions

R12 Component Oil Charge

R12 Refrigerant Evacuation And Charging Station Installation Procedure

Recover R12 System

Evacuate R12 System

Charge R12 System

R134a Compressor Oil Information

R134a Compressor Oil Charge Check

R134a Compressor Oil Removal

R134a Component Oil Charge

R134a Refrigerant Recovery/Recycling And Charging Station Installation Procedures

R134a Refrigerant Recovery

Evacuate R134a System

Charge R134a System

Check And Adjust Compressor Belt Tension

Group 25: Tests

Special Or Essential Tools

Proper Refrigerant Handling

R12 And R134a Refrigerant Cautions

R12 Air Conditioning System Test

R134a Air Conditioning System Test

Operating Pressure Diagnostic Chart

Pressure Diagnostic Chart

Low Pressure Switch Test

High Pressure Switch Test

Clutch Cycle Switch

Leak Testing

Refrigerant Hoses And Tubing Inspection