TM 10-3950-672-24-2
After rinsing with clean solvent, use compressed air to
dry the block.
Cylinder Block - Inspection
Inspect the cylinder bores for damage or excessive
wear.
Measure the cylinder bores.
Diameter
mm
in
102.000
MIN
[4.0157]
102.116
MAX
[4.0203]
Out-of-Roundness: .038mm [.0015 in]
Taper: 0.76mm [.003 in]
Oversize pistons and rings (0.5mm and 1.Omm
over- size) are available for re-bored cylinder blocks.
Straight Edge and Feeler Gauge
Use a straight edge and feeler gauge to measure the
overall flatness of the block. The overall flatness, end
to end and side to side, must not exceed 0.75 mm
[0.003 in].
Visually inspect the combustion deck for any localized
dips or imperfections. If present, the block deck must
be reground.
Inspect the main bearing bores for damage or abnormal
wear.
Install the main bearings and measure main bearing
bore diameter with main bolts tightened to 176 N [130
m
ft-lb]. Record for later reference.
Diameter
mm
in
83.106
MAX
[2.2720]
5-287