TM-9-2320-279-34-3

M977 SERIES, 8x8 HEAVY EXPANDED MOBILITY TACTICAL TRUCKS (HEMTT)

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

TM-9-2320-279-34-3 - Page 425 of 717

TM 9-2320-279-34-3

Hydraulic System Maintenance Instructions (Cont)

20-7. PRIMARY PUMP HYDRAULIC MOTOR CONTROL VALVE REPAIR (M978) (CONT).

C

. Assembly.

(1)

Install washer (1) and detent adapter (2) on

spool assembly (3).

(2)

Install spring (4), two detent balls (5), and

detent sleeve (6) on detent adapter (2).

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

NOTE

Lubricate preformed packings, seals, and spool before installing.

Install seal (7) in valve housing (8).

Install retaining plate (9) and washer (10) on spool assembly (3). Install spool assembly in valve

housing (8).

Install seal (11) and washer (12).

Install bracket (13) with two screws (14).

Install preformed

packing (15) on plug (16).

Install plug in valve

housing (8).

Install preformed

packing (17), two rings (18),

and preformed packing (19)

on relief valve

assembly (20).

Install relief valve

assembly (20).

Install end cap (21) with

four screws (22).

d. Follow-on Maintenance.

None.

END OF TASK

20-22