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) 4. Thread bridge guide remover (77) into tapped hole. 5. Attach slide hammer (78) to guide remover (77) and remove guide. (c) Install valve bridge guides as follows: 1. 2. 3. Apply a coat of sealant to bridge guide (18). Start guide (18) in cylinder head with undercut end first. Place bridge guide installer (79) over guide - (l 8) and drive into place. Installer will position guide to correct height (2.040 inches) in cylinder head. (5) Valve inserts Inspect valve inserts for excessive wear, pitting, cracking, or improper seat angle. Replace inserts as follows: (a) (b) (c) Place cylinder head on wood blocks with bottom side up. Using valve seat insert remover (80), remove valve insert (81 ). Clean valve seat insert counterbore in cylinder head and inspect for concentricity, flatness, and cracks. 4-194 Change 1