INSPECTION AND REPLACEMENT (cont) - TM-5-1940-277-34

measurement points for engine block warpage

ENGINE BLOCK INSPECTION AND REPLACEMENT INSTRUCTIONS (cont) - TM-5-1940-277-34_525

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 ENGINE BLOCK INSPECTION AND REPLACEMENT INSTRUCTIONS (Continued) LOCATION ITEM ACTION REMARKS WARNING Always use safety goggles when using dry compressed air. Do not use pressures greater than 30 psi. High air pressure can cause injury and cut the skin. • Dry cylin- Use air compres- der block sor with air and liner gun. using com- pressed air. • Coat cylin- der liner with oil to prevent rust. b. Inspect block Use steel for warpage straightedge and parallel to feeler gage. length of crankshaft and at 90° to crankshaft axis (short axis) at each cylinder. Warpage limit Lower warpage 0.004 in ex- limit in vici- cept the war- nity of number page limit for 3 and 4 cylin- the short axis ders is due to in vicinity of water bore number 3 and arrangement. 4 cylinder is 0.002 in due to water bore arrangement. 3-93

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