TM-9-2320-272-24-1

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 1 OF 4

JUNE 1998

TM-9-2320-272-24-1 - Page 898 of 1015

TM 9-2320-272-24-1

3-196. BRAKE PEDAL MAINTENANCE

THIS TASK COVERS:

a. Removal

b. Installation

c. Adjustment

INITIAL SETUP:

APPLICABLE MODELS

REFERENCES (TM)

All

TM 9-2320-272-10

TOOLS

TM 9-2320-272-24P

General mechanic’s tool kit (Appendix E, Item 1)

EQUIPMENT CONDITION

MATERlALS/PARTS

Parking brake set (TM 9-2320-272-10).

Two cotter pins (Appendix D, Item 48)

1.

Remove return spring (5) from brake pedal (9) and cab (2).

2.

Remove cotter pin (11), fulcrum pin (13), and brake pedal (9) from brake pedal valve (1). Discard

cotter pin (11).

3.

Remove jamnut (3) and pedal stop (4) from brake pedal valve (1).

4.

Remove cotter pin (7), roller pin (10), and two rollers (6) from brake pedal (9). Discard cotter pin (7).

5.

Remove rubber pad (8) from brake pedal (9).

1.

Install rubber pad (8) on brake pedal (9).

2.

Install two rollers (6) on brake pedal (9) with roller pin (10) and cotter pin (7).

3.

Install pedal stop (4) on brake pedal valve (1) with jamnut (3). Do not tighten jamnut (3).

4.

Install brake pedal (9) on brake pedal valve (1) with fulcrum pin (13) and cotter pin (11).

5.

Install return spring (5) on brake pedal (9) and cab (2).

Use hand pressure to depress brake pedal (9) only until rollers (6) contact plunger (12), and position

pedal stop (4) against brake pedal (9). Tighten jamnut (3).

3-534