TM-9-2320-279-34-1

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

TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS DIRECT SUPPORT AND GENERAL SUPPORT, VOLUME 1 OF 3

TM-9-2320-279-34-1 - Page 479 of 709

TM 9-2320-279-34-1

Transmission Maintenance Instructions (Cont)

7-15. FORWARD CLUTCH ASSEMBLY REMOVAL/REPAIR/INSTALLATION (CONT).

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Stack 10 clutch plates (8 and 9) on flat surface of press starting with steel plate (8) and

alternating with friction plate (9).

Place fourth clutch driving hub (10) on clutch plates (8 and 9).

NOTE

Pressure is applied to clutch pack to steady clutch pack.

Press evenly on fourth clutch driving hub (10) with 980 to 1020 lb load.

Measure distance from base of clutch pack (11) to machined surface (12) of hub (10) to get clutch

pack thickness.

If forward clutch piston (7) is an A piston, clutch pack thickness must be 1.415 to 1.442 in.

(35.94 to 36.63 mm). If forward clutch piston is a B piston, clutch pack thickness must be 1.388

to 1.414 in. (35.26 to 35.92 mm). If forward clutch piston is a C piston, clutch pack thickness

must be 1.361 to 1.387 in. (34.57 to 35.23 mm). Replace clutch plates (8 and 9) as needed to

ensure proper clutch pack thickness.

Remove clutch pack (11) and fourth clutch driving hub (10) from press.

Change 3