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 TM 55-1905-220-14-11
5-79.
CYLINDER BLOCK - MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
INSPECT (Cont)
h. Make sure the cylinder liner counterbores in the block are clean and free of dirt. Then check
the depth. The depth must be .4770 inch to .4795 inch and must not vary more than .0015
inch throughout the entire circumference. The counterbored surfaces must be smooth and
square with the cylinder bore within .001 inch total indicator reading. There must not be over
.001 inch difference between any two adjacent cylinder counterbores when measured along
the cylinder longitudinal center-line of the cylinder block.
i. Check the main bearing bores as follows:
(1) Check the bore diameters with the main bearing caps in their original positions. Lubricate
the bolt threads and bolt head contact areas with a small quantity of International
Compound No. 2, or equivalent. Then install and tighten the bolts to 165-175 lb-ft
(223.7-237.3 Nm) torque. When making this check, do not install the main bearing cap
stabilizers. The specified bore diameter is 4.812 inch to 4.813 inch. If the bores do not
fall within these limits, the cylinder block must be rejected.
5-1085
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