TM 5-4320-300-14
6-7. CYLINDER HEAD AND BLOCK (CONT)
Location/Item
Action
Remarks
57. Cylinder bore
Measure the entire bore of each cylinder with
inside diameter
a cylinder bore gage which has a dial indicator
calibrated in 0.0001 inch (0.00254 mm) in-
crements. Measure inside diameter of bore at
places A, B, C, and D on XZ and WY axis.
Bore diameter at position A should not ex-
ceed 4.5235 inches (114.897 mm), at posi-
tion B 4.490 inches (114.046 mm), or at
position C and D 4.3595 inches (110.731 mm).
NOTE
If a sealing problem has occurred with the above dimensions at positions A and
B, the block must be replaced.
58. Cylinder bore
Check bores for out-of-round and taper.
out-of-round
Out-of-round and taper must not exceed
and taper
0.0015 inch (0.0381 mm).
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