TM-9-2320-285-24-1

TRUCK TRACTOR, YARD TYPE, 43,500 LB GVW, DED, 4X2, ARMY MODEL M878A1

TECHNICAL MANUAL; ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL

OCTOBER 1985

TM-9-2320-285-24-1 - Page 394 of 987

TM 9-2320-285-24-1

2-33.

HORN SYSTEM MAINTENANCE

b.

Horn Switch.

This task covers:

a.

Removal

c.

Inspection

b.

Cleaning

d.

Installation

INITIAL SETUP

Tools

Equipment Condition

No.

1 Common Organizational Maintenance

Paragraph

Condition Description

Tool Kit

Wrench set

Vehicle parked on level

Safety glasses

surface,

engine off,

and

Screwdriver set

parking brake applied.

Steering column connector

Materials/Parts

disconnected.

Cleaning solvent

Item 1,

Appendix C

Clean cloths

Item 2,

Appendix C

Personnel Required

Wheel Vehicle Mechanic MOS 63B

KEY

1.

Horn button

8.

Posts (3)

2.

Spring seat

9.

Contact ring

3.

Spring

10.

Screws (2)

4.

Screw

11.

Emblem

5.

Screws (2)

12.

Contact

6.

Retainer

13.

Spring

7.

Rivets (3)

14.

Contact seat

2-371