TM-9-2815-202-34 Technical Manual for 8V71T Engines for M109 Howitzer Download
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TM 9-2815-202-34 NOTE [f bearings are installed properly, crankshaft will turn freely with all of bearing cap bolts drawn to specified torque. (13) Measure Crankshaft End Play (a) (b) Mount dial indicator on rear of cylinder block with indicator point resting on end of crankshaft assembly. Using a pry bar or large screwdriver between main bearing cap and crankshaft counterweight, push crankshaft toward dial indicator. With constant pressure on screwdriver, set dial indicator to zero. NOTE If correct crankshaft end play cannot be obtained with standard size thrust washers, use 0.005 or 0.010 inch oversize washers. Insufficient end play can result from a misaligned rear main bearing or a burr or dirt on inner face of one or more thrust washers. - (c) Force crankshaft in opposite direction and note amount of end play on dial. End play must be 0.004 to 0.011 inch with new parts and maximum of 0.018 inch with used parts. END OF TASK FOLLOW-ON MAINTENANCE Para Description ■ 5-27 Install lower front cover (7083-7391, 7083-7396, and 7083-7399) 4-33 Install pistons and connecting rods ■ 4-28 Install lower front cover (7083-7395 and 7083-7398) 4-25 Install idler gear 4-24 Install flywheel housing Change 1 4-161