| Tweet |
Custom Search
|
|
|
||
 TM 55-1905-221-14-4
6-29. CYLINDER BLOCK - MAINTENANCE INSTRUCTIONS (Continued).
LOCATION/ITEM
ACTION
REMARKS
INSPECT (Cont)
(3) If stock is removed from the
cylinder head contact sur-
faces of the block, check
the depth of the seal ring
grooves and counterbores.
The cylinder head seal strip
grooves must be .092 - .107
inch deep. The large water
hole counterbores (between
the cylinders) must be .109 -
.120 inches deep, and the
combination water and oil
hole counterbores and small
water hole counterbores must
be .087 - .098 inches deep.
If necessary, deepen the
grooves or counterbores to
the specified limits to
retain the proper "crush" of
the seal rings. It is not
necessary to deepen the
counterbores for the
cylinder liners since .004
since .004 inch and .008
inch undersize thickness
inserts are available for
adjusting the liner portion
as outlined in paragraph
3-31.4, under Fitting
Cylinder Liner in Block
Bore.
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
6-537
|
||
|
||
