TM-9-2815-202-34 Technical Manual for 8V71T Engines for M109 Howitzer Download
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TM 9-2815-202-34 4-33. (6) (7) (8) (9) (10) (11) PISTON AND CONNECTING ROD MAINTENANCE (Cont) Check bearing to crankshaft journal clearance by placing a plastic gage strip (34) between crankshaft journal (32) and connecting rod cap (3). Tighten connecting rod nuts (2) to 60-70 Ib-ft (81-95 N-m.). Remove connecting rod nuts and cap, and measure width of plastic gage with measuring strip (35). Maximum clearance with used parts is 0.006 inch. Place lower bearing shell (4) in connecting rod cap (3). Lubricate bearing shell with clean engine oil. NOTE Ensure connecting rod bolt has not turned in connecting rod before torquing nuts. Install bearing cap (3) and bearing shell (4) on connecting rod (5) with identification numbers on cap and rod adjacent to each other. Torque connecting rod bolt nuts (2) to 60-70 Ib-ft (81-95 N.m.). NOTE If necessary, pry connecting rods apart before measuring side clearance. Using feeler gage (36), measure side clearance between each pair of connecting rods. Clearance limits are 0.008 to 0.016 inch. Install additional liners, pistons, and rod assemblies in same manner. Use hold-down clamps to hold each liner in place. Remove all liner hold-down clamps. END OF TASK FOLLOW-ON MAINTENANCE Para Description 4-32 Install oil pump and oil pump tubes 4-31 Install oil pressure regulator and relief valve 4-27 Install cylinder head 4-20 Install oil pan I 4-144 Change 1