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 906 of 1015

TM 9-2320-272-24-1

3-198. BRAKE PEDAL (TREADLE) VALVE (M936/A1/A2) REPLACEMENT (Contd)

7.

Disconnect two air hoses (5) from elbows (4).

8.

Remove two elbows (4) from control valves (3).

9.

Disconnect air hoses (7) and (8) from adapters (6).

10.

Remove two adapters (6) from control valves (3).

11.

Remove two control valves (3) and adapter (2) from firewall (9).

12.

Remove three locknuts (1) and brake pedal valve (10) from firewall (9). Discard locknuts (1).

13.

Remove three studs (11) from brake pedal valve (10).

14.

Remove two brake pedal valve adapters (13) from brake pedal valve (10).

15.

Remove pressure relief valve (12) from brake pedal valve (10).

b. Installation

NOTE

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If new brake pedal valve is being installed, use attaching parts

and fittings from old brake pedal valve.

1.

Install pressure relief valve (12) on brake pedal valve (10).

2.

Install two brake pedal valve adapters (13) on brake pedal valve (10).

3.

Install three studs (11) on brake pedal valve (10).

4.

Install brake pedal valve (10) on firewall (9) with three new locknuts (1).

5.

Install adapter (2) and two control valves (3) on firewall (9).

6.

Install two adapters (6) on control valves (3).

7.

Connect air hoses (7) and (8) to adapters (6).

8.

Install two elbows (4) on control valves (3).

9.

Connect two air hoses (5) to elbows (4).

l

Fittings must be cleaned and inspected for cracks and stripped

threads.

l

Wrap all male pipe threads with antiseize tape before

installation.

3-542