TM-9-2815-202-34 Technical Manual for 8V71T Engines for M109 Howitzer Download
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TM9-2815-202-34 (4) Valve bridge guides (a) Inspect valve bridge guides for wear. If necessary, replace guides as follows: 1. 2. 3. 4. 5. File or grind two opposite notches 0.06 inch deep in side of bridge guide (18) approximately 1.25 inches from top. Using bridge guide remover tool set, place spacer (73) over guide. Slide guide remover (74) over guide and aline set screws with notches ground in guide. Tighten set screws to secure tool in place. Place spacer (75) over guide remover (74). Thread nut (76) on guide remover and turn clockwise to withdraw guide from cylinder head. (b) Remove broken valve bridge guides as follows: 1. Center punch end of valve bridge guide (18). 2. Drill hole 0.5 inch deep in end of guide (18) with No. 3 (0.2130 inch) drill bit. 3. Tap guide with 1/4-28 bottoming tap. 4-193