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 TM 55-1905-219-14-11
5-79. CYLINDER BLOCK - MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
INSPECT (Cont)
(3) If stock is removed from the cylinder head
contact surfaces of the block, check the depth
of the seal ring grooves and counterbores. The
cylinder head seal strip grooves must be .092
inch - .107 inch deep. The large water hole
counterbores (between the cylinders) must be
.109 inches - .120 inches deep, and the com-
bination water and oil hole counterbores and
small waterhole counterbores must be .087
inches - .098 inches deep. If necessary,
deepen the grooves or counterbores to the
specified limits to retain the proper "c-rush"
on the seal rings. It is not necessary to
deepen the counterbores for the cylinder
liners since .004 inch and .008 inch under-
size thickness inserts are available for
adjusting the liner position as outlined
in Chapter 3, paragraph 3-98, under
Fitting Cylinder Liner in Block Bore.
5-1082
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