TM 5-4310-227-15
Manufacturer's dimensions
Desried clearance
Maximum allowable
and tolerances in inches
wear and
clearance
Min.
Max.
Max
Min.
Cylinders:
Bore, low-pressure_________________
4.625
0.006
4.626
0.003
0.002
___
___
Bore, high-pressure ______________
2.500
0.006
2.5005
___
___
___
Taper ____________________________
0.001
0.001
___
___
Out-of-round _____________________
0.002
0.001
0.001
Crankshaft:
_
_
_
_
_
_
_
_
_
Journal size, main bearing ________ 1.376
1.377
_
_
_
_
_
_
_
_
_
Journal size, connecting rod ________ 1.375
1.376
Journal out-of-round _____________ _ _ _
_
_
_
_
_
_
_
_
_
0.0005
_
_
_
Journal taper ______________________ _ _ _
_
_
_
_
_
_
0.0002
Piston, piston pins, and piston rings:
___
Piston size, low-pressure _________
___
4.6195
4.6200
0.0015
___
___
piston size, high-pressure ________
2.4970
2.4975
0.0015
___
___
Piston pin diameter, low-pressure _____
0.001
0.93750
0.93775
___
___
Piston pin diameter, high-pressure ___
0.93775
0.001
0.93750
___
___
___
2.118
Piston pin length, high-pressure ____
2.123
___
___
___
4.250
Piston pin length, low-pressure _____
4.250
___
___
___
Piston pin clearance in piston ____
0.0009
0.0002
Piston to cylinder clearance, low-
___
___
___
0.0055
0.00050
pressure _______________________
piston to cylinder clearance, high-
___
___
___
0.0030
0.0025
pressure _______________________
Piston ring side clearance, low-pres-
___
___
___
0.0025
0.0010
sure ___________________________
Piston ring aide clearance, high-pres-
___
___
___
0.0045
0.0010
sure ____________________________
___
___
___
0.013
0.023
Piston ring gap, low-pressure _________
___
___
___
0.007
0.017
Piston ring gap, high-pressure ________
Connecting rods and bearings:
___
Bearing running clearance ___________ _ _ _
___
0.0016
0.0003
___
Bearing side clearance ______________ _ _ _
___
0.0012
0.0040
___
___
___
Bearing internal diameter ___________ 1.355
1.357
Section Ill. SPECIAL TOOLS AND EQUIPMENT
tenance repair parts are listed and illustrated
in TM 5-4310-227-25P.
No special tools or equipment are required
to perform field and depot maintenance on the
air compressors.
and Equipment
No specially designed tools or equipment are
Depot Maintenance Repair Parts
required to perform direct and general support
and depot maintenance on the air compressors.
Direct and general support and depot main-