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Page Description

WELCOME

TABLE OF CONTENTS

INTRODUCTION
General Information

LESSON 1: FAN DRIVE SYSTEM
1.1. Operation
1.2. Control System

LESSON 2: CONTROL COMPONENTS
2.1. Engine Coolant Thermal Switch
2.2. Refrigerant Pressure Switch
2.3. Solenoid Valve

LESSON 3: ELECTRICAL CONTROL SYSTEMS (ECM)
3.1. Electronic Control Module
3.2. Sensors

LESSON 4: ELECTRICAL CONTROL SYSTEMS (NON-ECM) 4.1. Types of Electrical Control Systems
4.2. Normally-Open Electrical Controls
4.3. Normally-Closed Electrical Controls
4.4. Comparison - Open/Closed Electrical Controls
4.5. Summary

LAB ACTIVITY - FAN DRIVE CONTROL COMPONENTS

REVIEW QUESTIONS - FAN DRIVE CONTROL SYSTEM

REVIEW ANSWERS - FAN DRIVE CONTROL SYSTEM

PRIOR TO SERVICING

LESSON 5: DRIVEMASTER PARTS AND REPAIR KITS
5.1. Parts Identification
5.2. Repair Kits
5.2.1. DriveMaster Seal Kit
5.2.2. DriveMaster Super Kit
5.2.3. DriveMaster PolarExtreme Super Kit
5.2.4. DriveMaster Friction Disc Kit
5.2.5. DriveMaster Friction Liner Kit
5.2.6. DriveMaster Bearing/Cartridge Kit
5.2.7. DriveMaster Clutch Pack Kit

LESSON 6: REMOVING THE FAN DRIVE

LESSON 7: DISASSEMBLING THE FAN DRIVE
7.1. Tools Required
7.2. Disassembly
Fan Mounting Disc Removal and Inspection
Spring Housing / Piston Assembly Removal
Air Chamber Seals
Sheave and Sheave Bearings
Air Cartridge Removal

LESSON 8: REBUILDING THE FAN DRIVE
8.1. Torque Specifications
8.2. Rebuilding
Sheave Bearing Replacement
Air Cartridge
Spring Housing / Piston Assembly Reassembly
Fan Mounting Disc Reassembly

LESSON 9: REINSTALLING THE FAN DRIVE

LESSON 10: PREVENTIVE MAINTENANCE (PM)
10.1. Introduction
10.2. Weekly PM
10.3. 25,000 Mile [40,000 Km] PM

LESSON 11: TROUBLESHOOTING

REVIEW QUESTIONS - FAN DRIVE SERVICE

REVIEW ANSWERS - FAN DRIVE SERVICE

FINAL TEST

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