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SECTION 6
6-33 T-268-07
Table 6-3. Recommended Bolt Torque Values
BOLT DIA. THREADS TORQUE MKG
FREE SPINNING
#4
#6
#8
#10
1/4
5/16
3/8
7/16
1/2
9/16
5/8
3/4
40
32
32
24
20
18
16
14
13
12
11
10
5.2 in-lbs
9.6 in-lbs
20 in-lbs
23 in-lbs
75 in-lbs
11 ft-lbs
20 ft-lbs
31 ft-lbs
43 ft-lbs
57 ft-lbs
92 ft-lbs
124 ft-lbs
0.05
0.11
0.23
0.26
0.86
1.52
2.76
4.28
5.94
7.88
12.72
17.14
NONFREE SPINNING (LOCKNUTS ETC.)
1/4
5/16
3/8
7/16
1/2
9/16
5/8
3/4
20
18
16
14
13
12
11
10
82.5 in-lbs
145.2 in-lbs
22.0 ft-lbs
34.1 ft-lbs
47.3 ft-lbs
62.7 ft-lbs
101.2 ft-lbs
136.4 ft-lbs
0.95
1.67
3.04
4.71
6.54
8.67
13.99
18.86
Table 6-4. Wear Limits For Compressors
F
A
C
T
O
R
Y
M
A
X
I
M
U
M
F
A
C
T
O
R
Y
M
I
N
I
M
U
M
MA
X
IMUM WE
A
R
PART NAME
F
A
C
T
O
R
Y
M
A
X
I
M
U
M
F
A
C
T
O
R
Y
M
I
N
I
M
U
M
M
A
X
I
M
U
M
W
E
A
R
BEFORE REPAIR
P
A
R
T
N
A
M
E
INCHES MM INCHES MM INCHES MM
MAIN BEARING
Main Bearing Diameter 1.6268 41.3207 .0020 0.0508
Main Bearing Journal Diameter 1.6233 41.2318 .0020 0.0508
PUMP END
Main Bearing Diameter 1.3760 34.9504 .0020 0.0508
Main Bearing Journal Diameter 1.3735 34.8869 .0020 0.0508
CONNECTING ROD 1.3768 34.9707 .0020 0.0508
Piston Pin Bearing 0.6878 17.4701 .0010 0.0254
CRANKPIN DIAMETER 1.3735 34.8869 .0025 0.0635
Throw 1.072 27.2288 1.070 27.1780
THRUST WASHER (Thickness) 0.154 3.9116 0.1520 03.8608 .0250 0.6350
CYLINDERS
Bore 2.0010 50.8254 .0020 0.0508
Piston (Diameter) 1.9860 50.4444 .0020 0.0508
Piston Pin (Diameter) 0.6873 17.4574 .0010 0.0254
Piston Ring Gap 0.013 00.3302 0.0050 00.1270 .0250 0.6350
Piston Ring Side Clearance 0.002 00.0508 0.0010 00.0254 .0020 0.0508