Section I. INTRODUCTION - TM-9-2320-279-20-10651

TM 9-2320-279-20-1

Page

Para

Contents

7-359

Neutral Interlock Switch Sender Unit Removal/Installation . . . . . . . . . . . . . . . . . . . . . . . 7-97

7-361

Tachometer Sending Unit Removal/Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-98

7-362

Traction Control Indicator Light Assembly Removal/Installation . . . . . . . . . . . . . . . . . . . 7-99

7-364

Ether Start Switch Removal/Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-100

7-366

Horn Switch Contact Roller Removal/Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-101

7-370

Dimmer Switch Removal/Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-102

7-371

Trailer Electrical Connector Removal/Installation (M983). . . . . . . . . . . . . . . . . . . . . . . . . 7-103

7-374

Fuel Restriction Sensor Removal/Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-104

7-377

Clearance Light Wiring Harness Removal/Installation (M977, M985) . . . . . . . . . . . . . . . . 7-105

S e c t i o n I. INTRODUCTION

This chapter contains maintenance instructions for replacing, installing, adjusting,

7-1. GENERAL.

removing, and testing the electrical system components authorized by the Maintenance Allocation Chart

(MAC) at the organizational maintenance level.

ALTERNATOR

AND

VOLTAGE

REGULATOR

Section II.

Electrical System Maintenance Instructions

7-2. ALTERNATOR TESTING.

This task covers:

a. Alternator Testing

b. Follow-on Maintenance

INITIAL SETUP

Equipment Condition

Models

All

or Para

Condition Description

Test Equipment

9-2320-279-10

Parking brake on.

9-2320-279-10

Engine cover open.

Multimeter NSN 6625-01-139-2512

9-2320-279-10

Engine side panel removed.

Special Tools

9-2320-279-10

Engine running.

None

Special Environmental Conditions

Supplies

None

General Safety Instructions

Personnel Required

None

MOS 63S, Heavy wheel vehicle mechanic

References

None

7-3