TM-9-2815-202-34 Technical Manual for 8V71T Engines for M109 Howitzer Download
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TM9-2815-202-34 8-4. EXHAUST VALVE CLEARANCE ADJUSTMENT (HOT OR COLD ENGINE) (Cont) NOTE Normal engine coolant operating temperature is 160-185°F (71.1-85.0 o C). d. e. f. g. i. Place a 0.015 inch (0.381 mm) feeler gage (5) (cold engine) or a 0.013 inch (0.330 mm) feeler gage (5) (hot engine) between valve bridge (6) and rocker arm (7). Turn push rod (3) in or out of clevis (8) until a smooth pull is obtained on feeler gage (5). Remove feeler gage (5). Hold push rod (3) and tighten locknut (4). NOTE A 0.015 inch (0.381 mm) feeler gage (5) (cold engine) or a 0.013 inch (0.330 mm) feeler gage (hot engine) must pass freely between valve bridge (6) and rocker arm (7). A 0.017 inch (0.432 mm) feeler gage (5) (cold engine) or a 0.015 inch (0.381 mm) feeler gage (hot engine) must not pass through bridge clearance. 8-7