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MAIN BEARING INSPECTION AND REPLACEMENT INSTRUCTIONS (cont) - TM-5-1940-277-34_481
MAIN BEARING INSPECTION AND REPLACEMENT INSTRUCTIONS (cont) - TM-5-1940-277-34_483

TM-5-1940-277-34 Boat Bridge Erection Twin Jet Aluminum Hull Model USCSBMK1 (1940-01-105-5728) Manual
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TM 5-1940-277-34 MAIN BEARING INSPECTION AND REPLACEMENT INSTRUCTIONS (Continued) LOCATION ITEM ACTION REMARKS d.    Main bearing Remove. Use 7/8 in socket caps (6,7,8, and 1/2 in drive 9), 14 bolts ratchet. (10) and lower bearing halves (12,13) e.    Crankshaft Remove. (11) f.    Upper bearing Remove from halves (14,15) block (1). INSPECTION: 2. Main bearings   a. Inspect for (12,13,14,15) scoring or grooving. b. Replace if scored or grooved. 3.    Cylinder block Main bearing a. Reinstall after (1) caps (6,7,8,9), crankshaft main bearing removal. halves (12,13, 14,15) and 14 bolts (10) b. Torque bolts Use 5/8 in socket to 115 - 120 and torque wrench ft-lb (15.89 (0 - 175 ft-lb). to 16.58 kfgm). c. Measure Use micrometer inside dia- caliper, inside. meter of each set of main bearings. 3-51







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