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 205 of 717

TM 9-2320-279-34-3

M977, M985, and M984E1 Crane Maintenance Instructions (Cont)

17-21.

HOIST DRIVE MOTOR CONTROL VALVE REMOVAL/REPAlR/INSTALLATION

(CONT).

NOTE

There are two models of control valves. Model A (Snap-Tite, no longer available as

an assembly) has an SAE #4 brake port. Model B (Dana) has an SAE #6 brake

port. Removal procedures are identical for both.

a.

Removal.

Remove four screws (1), lockwashers (2), control valve (3), and two preformed

packings (4).

b. Disassembly.

NOTE

Perform steps (1) through (3) for Model A. Perform steps (3.1) through (3.5) for

Model B.

(1)

(2)

Remove two fittings (1) and preformed packings (2).

(3)

Remove elbow (3) and preformed packing (4).

Remove three plugs (5).

17-94 Change 3