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TM 10-3930-669-34
Table 3-1. Wear Limits, Fits, and Tolerances
Component
Minimum
Maximum
Crankshaft - continued:
Main bearing journal out-of-round
0.001 in.
(0.020 mm)
Main bearing journal width
1.4567 in.
1.4606 in.
(37.0000 mm)
(37.1000 mm)
Main bearings, numbers 2, 3, and 4:
Main bearing bore diameter - less bearings
2.9330 in.
2.9334 in.
(74.5000 mm)
(74.5080 mm)
Main bearing inside diameter - normal
2.7574 in.
2.7582 in.
(70.0400 mm)
(70.0600 mm)
Main bearing inside diameter - minimum
2.6984 in.
2.7001 in.
(68.5400 mm)
(68.5830 mm)
Main bearing to crankshaft journal clearance - normal
0.0019 in.
0.0043 in.
(0.0500 mm)
(0.1100 mm)
Main bearing to crankshaft journal clearance - maximum
0.0059 in.
(0.1500 mm)
Thrust bearings with stop rings:
Outside distance of stop rings - nominal
1.4453 in.
1.4508 in
(36.7110 mm)
(36.8500 mm)
Outside distance of stop rings - maximum
1.5241 in.
1.5295 in.
(38.7110 mm)
(38.8500 mm)
Thrust bearing-to-journal - normal clearance
0.0059 in.
0.0123 in.
(0.1500 mm)
(0.3140 mm)
Thrust bearing-to-journal - maximum clearance
0.0157 in.
(0.4000 mm)
3-7
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