TM-9-2320-279-34-2

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

TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS DIRECT SUPPORT AND GENERAL SUPPORT, VOLUME 2 OF 3

TM-9-2320-279-34-2 - Page 123 of 632

TM 9-2320-279-34-2

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Broke System Maintenance Instructions (Cent)

Remove three plugs (1, 2, and 3).

Matchmark cylinder head (4) and cylinder block (5).

Remove 10 screws (6) and tap cylinder head (4) to break gasket seal.

Remove cylinder head (4).

Remove head gasket (7).

Remove two springs (8), inlet valve guides (9), and inlet valves (10).

Place cylinder head (4) in vise with soft jaws.

Remove two discharge valve capnuts (11) and springs (12).

Using air compressor cylinder head

removal tool, remove two discharge

valve seats (13).

Remove discharge valve plug (14) and

discharge valve (15) from two discharge

valve seats (13).

(11) Remove inlet valve spring bushing (16) and inlet valve spring seat (17) with tap and handle.

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