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 321 of 799

TM 9-2320-272-24-3

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

4.

Using pliers, grasp locknut (10) and remove lower piston assembly (11) from valve body (1). Discard

lower piston assembly (11).

CAUTION

When performing step 5, be careful not to damage pedal valve

body during upper piston assembly removal.

5.

Position flat-tip punch on tabs (13) of upper assembly (12), rotate upper piston assembly (12) to

loosen, then remove from valve body (1).

4-585