TM 5-4310-371-14
TABLE 5-2. COMPRESSOR PUMP OVERHAUL REPLACEMENT STANDARDS
ITEM
Manufacturer's Dimensions
Desired
Maximum allowable wear
and Tolerance in inches
Clearance
and clearance
MIN.
MAX.
MIN.
MAX.
Cylinders
Bore, low-
4.6245
4.6255
. . .
. . .
0.004
pressure
Bore, high-
2.4995
2.5005
. . .
. . .
0.002
pressur e
Out-of-round
. . .
. . .
. . .
. . .
0.001
Taper
. . .
. . .
. . .
. . .
0.001
Crankshaft
Rod size
1.623
1.625
. . .
. . .
Taper
. . .
. . .
. . .
. . .
0.001
Out-of-round
. . .
. . .
. . .
. . .
0.005
End Play
. . .
. . .
0.000
0.002
Pistons and Pins
Piston, low-
4.619
4.620
0.003
0.005
0.005
pressure
Piston, high-
2.4965
2.4975
0.0015
0.0035
0.003
pressure
Pin, low-
2.125
2.135
0.0001
0.0005
pressure
Pin, high-
2.125
2.135
0.0001
0.0005
pressure
Connecting rod
Bearing, I.D.
0.8125
. . .
0.001
. . .
Bearing, side
. . .
. . .
0.010
. . .
clearance
5-9
