TM 5-4310-356-14
Table 5-2. Compressor Repair and Replacement Standards
Manufacturer'
s
Maximum
dimensions and
allowable
Component
tolerances in
Desired clearance
wear
U.S. and Metric
and
measurements
clearance
Minimum
Maximum
Minimum
Maximum
Cylinders
Bore, low pressure
4.6245
4.6255
0.004
(11.7462)
(11.7488)
(0.6350)
Bore, high pressure
2.4995
2.5005
0.002
(6.3488)
(6.3513)
(0.0008)
Out-of-round
0.001
(0.0025)
Taper
0.001
(0.0025)
Crankshaft
Journal (rod) size
1.623
1.625
(4.1149)
(4.1275)
Taper
(0.0025)
Out-of-round
0.005
(0.0127)
End play
0.000
0.002
(0.0051)
Pistons and Pins
Piston, low pressure
4.619
4.620
0.003
0.005
0.005
(11.7323)
(11.7348)
(0.0076)
(0.0127)
(0.0127)
Piston, high-pressure
2.4965
2.4975
0.0015
0.003
0.003
(6.3411)
(0.0076)
(0.0076)
Pin, low pressure
0.8125
0.8128
0.0000
0.0005
(2.0638)
(2.0645)
(0.0013)
Pin, high-pressure
0.8125
0.8128
0.0000
0.0005
(2.0638)
(2.0645)
(0.0013)
Bearings Connecting Rod
Bearing, I. D.
0.8125
0.8130
0.0901
0.007
(2.0606)
(2.0650)
0.0025)
(0.0178)
Bearing side clearance
0.010
0.017
(0.0254)
(0.0432)
NOTE
The manufacturer's dimensions and tolerances are given in U.S. and Metric
measurements. All Metric units are enclosed in brackets.
5-17
