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ELECTRIC MOTOR DOES NOT CUT IN AT 140 PSI (9.84 kgs), AND CUT OUT AT 175 PSI (Cont)
Figure 5-6. Crankcase assembly, cylinders, manifolds and related components, exploded view (Model HR5-8M-4).

TM-5-4310-350-14 Compressor Air Reciprocating Electric Motor Driven Reciever Mounted 15 CFM at 175 PSI (12.30 KGS Per Sq Cm) Manual
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TM
5-4310-350-14
Section Ill. REPAIR AND OVERHAUL INSTRUCTIONS
AIR COMPRESSOR ASSEMBLY AND ELECTRIC MOTOR
NOTE
The manufacturer's dimensions and tolerances are given in U. S. inches and Metric measurements. All Metric
units are enclosed in brackets.
Table 52. Compressor Repair and Replacement Standards.
Manufacturer's
Maximum
dimensions and
Desired clearance
allowable
tolerances in
wear
Component
U.S. and Metric
and
measurements
clearance
Minimum
Maximum
Maximum
Minimum
Clylinders
Bore, low pressure
4.6255
0.004
4.6245
(0.6350)
(11.7462)
(11.7488)
Bore, high pressure
0.002
2.4995
2.5005
(6.3513)
(0.0008)
(6.3488)
0.001
Out-of-round
(0.0025)
0.001
Taper
(0.0025)
Crankshaft
Journal (rod) size
1.623
1.625
(4.1275)
(4.1149)
Taper
0.001
(0.0025)
0.005
Out-of-round
(0.0127)
End play
0.002
0.000
(0.0051)
Pistons and Pins
4.619
4.620
0.005
0.005
0.003
Piston, low pressure
(0.0127)
(0.0127)
(11.7323)
(0.0076)
(11.7348)
2.4965
2.4975
0.003
Piston, high-pressure
0.0015
0.003
(0.0076)
(0.0076)
(6.3411)
Pin, low pressure
0.8125
0.0005
0.8128
0.0000
(2.0638)
(2.0645)
(0.0013)
Pin, high-pressure
0.8125
0.8128
0.0005
0.0000
(2.0645)
(0.0013)
(2.0638)
Bearings Connecting Rod
Bearing, I.D.
0.8125
0.8130
0.007
0.001
(2.0606)
(2.0650)
(0.0178)
(0.0025)
Bearing side clearance
0.010
0.017
(0.0254)
(0.0432)
(4) Refer to figure 5-8 and remove hand
5 - 5 . Pistons, Piston Rings, Connecting
hole plate.
R o d s , and Cylinder Block
(5) Refer to figure 58 and remove connect-
a. Removal and Disassembly.
ing rod bearing caps.
(1) Remove the compressor assembly.
CAUTION
(2) Refer to Figure 5-6 or 5-6.1 and disassem-
ble tube assemblies, cooler tubes, manifolds, and air
Mark the connecting rod from which
cleaner as shown,
the caps were removed, and reassemble
(3) Refer to figure 5-7 and disassemble
caps on the same rod. Do not intermix
intake and exhaust valves as shown.
the connecting rods and caps.
Change 2
5-11






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