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Page Title:
Table 4-1. Engine fits, tolerances, and wear limits-continued |
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 TM 5-4320-234-34
Table 4-1. Engine fits, tolerances, and wear limits - Continued
Manufacturer's
dimensions in
Design clearances
Allowable
Component points of rneasurement
inches
in inches
wear or
clearance
Min.
Max.
Min.
Max.
Bearing journal diameter (cont.)
No. 4
1.2465
1.2475
1.2455
(3.1162 cm)
(3.1187 cm)
(3.1137 cm)
Camshaft bushing diameter
No. 1
1.8745
1.8755
(4.6862 cm)
(4.6887 cm)
No. 2
1.8115
1.8125
(4.5287 cm)
(4.5312 cm)
No. 3
1.7495
1.7502
(4.3737 cm)
(4.3755 cm)
No. 4
1.2495
2.2505
(3.1237 cm)
(5.6262 cm)
Journal-to-bushing clearance
No. 1
0.002
0.004
(0.0050 cm)
(0.0100 cm)
No. 2
0.002
0.004
(0.0050 cm)
(0.0100 cm)
No. 3
0.002
0.004
(0.0050 cm)
(0.0100 cm)
No. 4
0.002
0.004
(0.0050 cm)
(0.0100 cm)
Camshaft end play
0.005
0.009
(0.0125 cm)
(0.0225 cm)
Connecting rod
Bushing hole diameter
0.9130
0.9140
(2.2825 cm)
(2.2850 cm)
Bearing hole diameter
2.1865
21870
(5.4662 cm)
(5.4675 cm)
Side play
0.0060
0.0100
(0.0150 cm)
(0.0250 cm)
Connecting rod bearing
Bearing hole diameter
2.1865
2.1870
(5.4662 cm)
(5.4675 cm)
Bearing thickness
0.0613
0.0616
0.0608
(0.0407 cm)
(0.1540 cm)
(0.1520 cm)
Crank pin diameter
2.0619
2.0627
20609
(5.1547 cm)
(5.1567 cm)
(5.1522 cm)
Bearing to crankshaft clearance
0.0006
0.0022
0.0032
(0.0015 cm)
(0.0055 cm)
(0.0080 cm)
Crankshaft
End thrust
0.0030
0.0080
(0.0075 cm)
(0.0200 cm)
Main bearing journal diameter
2.3744
2.3752
2.3734
(5.9360 cm)
(5.9380 cm)
(5.9335 cm)
Crank pin diameter
2.0619
2.0627
2.0609
(5.1547 cm)
(5.1567 cm)
(5.1522 cm)
Main bearings
Case hole
2.5615
2.5622
(6.4037 cm)
(6.4055 cm)
Bearing thickness
0.0925
0.0928
0.0920
(0.2312 cm)
(0.2320 cm)
(0.2300 cm)
Crankshaft journal diameter
2.3744
23752
2.3734
(5.9360 cm)
(5.9380 cm)
(2.3734 cm)
Journal-to-bearing clearance
0.0007
0.0028
(0.0017 cm)
(0.0070 cm)
Piston
Ring groove width
1st
0.1275
0.1285
0.1305
(0.3187 cm)
(0.3212 cm)
(0.3262 cm)
4-2
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