TM-9-2815-205-24 Technical Manual for M113 Engine 6V53 6V53T Download
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INSPECTION-ACCEPTANCE AND REJECTION CRITERIA - Continued NOTE Main bearing caps are numbered to correspond with their respective positions in cylinder block. No. 1 bearing cap is located at front of block and stamped on bottom of front oil pan rail. Install main bearing bolts, bearing caps, stabilizers, and hardened washers (WP 0097). 7. Using cylinder bore gage, measure diameters of main bearing bores (Figure 6, Item 36) with bearing caps in original position. Diameter of main bearing bore is 3.751–3.752 in. (95.28–95.30 mm). If bores do not meet these limits, replace cylinder block. 36 MAINT_408 Figure 6. Main Bearing Bore Depth. 8. Measure diameter of camshaft bearing bores. End bearing bores must be 2.3750–2.3760 in. (60.325–60.350 mm) for standard bearings and 2.3850–2.3860 in. (60.579–60.044 mm) for oversized bearings. Intermediate bearing bores must be 2.3650–2.3660 in. (60.071–60.096 mm) for standard bearings and 2.3750–2.3760 in. (60.325–60.350 mm) for oversized bearings. 9. Check remaining cylinder block surfaces and threaded holes for damage. Check all mating surfaces or mounting pads for flatness, nicks, and burrs. Clean up damaged threads in tapped holes with a tap or install helical thread inserts if necessary. 10. Check for cracking in area between center water transfer holes and cylinder head to block bolt holes (cam and exhaust sides). If cracks are found, replace cylinder block. END OF TASK TM 9-2815-205-24 0098 0098-9