TM-9-2320-272-24-3

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

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 3 OF 4

JUNE 1998

TM-9-2320-272-24-3 - Page 324 of 799

TM 9-2320-272-24-3

4-108. BRAKE PEDAL (TREADLE) VALVE REPAIR (Contd)

5.

6.

7.

8.

9.

10.

Install 0-rings (1), (4), and (8) on lower piston assembly (2).

Install upper piston assembly (5) in valve body (8). Use thumb pressure to seat properly,

Install lower piston assembly (2) in valve body (6). Use thumb pressure to seat properly,

Install stopscrew (10) on mounting plate (8). Do not tighten locknut (9).

Install breather (11), O-ring (12), and plunger (18) on mounting plate (8). Use hand pressure to seat

plunger (18) properly.

NOTE

Discard retainer plats supplied with valve repair kit,

Install gasket (7) and mounting plate (8) on valve body (6) with three screws (14).

4-588