TM-9-2815-202-34 Technical Manual for 8V71T Engines for M109 Howitzer Download
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TM 9-2815-202-34 4-38. CYLINDER HEAD REPAIR (Cont) (8) Rest cylinder head on its side and remove eight cam follower guide bolts (19), eight Iockwashers (20), and four cam follower guides (21). Discard lockwashers. (9) Remove twelve cam follower spring retainers (22) from cam follower bores in cylinder head. (10) Pull twelve cam followers (23) and twelve push rods (16) assemblies from bottom of cylinder head. Remove twelve push rod nuts (15), twelve upper spring seats (25), twelve cam follower springs (24), and twelve lower spring seats (26) from twelve push rods. NOTE Mark location of valve for reinstallation. With used valves, valves must go back in original location. (11) Remove sixteen exhaust valves as follows: (a) Position cylinder head on its side. (b) Using valve spring compressor (27), compress valve spring (28). Remove two-piece tapered valve locks (29). (c) Remove upper spring seat (30), valve spring (28), lower spring seat (31) , and exhaust valve (32). NOTE •l Model 7083-7395 contains four bolts (33), four flat washers (34), two cover plates (35), and two gaskets (36) per head. • Model 7083-7398 contains six bolts, six flat washers, three cover plates, and three gaskets per head. 4-186