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TM 10-4320-324-14
Table 61. Wear Limits, Fits, and Tolerances - CONT.
Component
Minimum
Maximum
Crankshaft - continued:
Main bearing journal out-of-round
0.001 in.
(0.02 mm)
Main bearing journal width
1.4567 in.
1.4606 in.
(37.00 mm)
(37.10 mm)
Main bearings, numbers 2, 3, and 4:
Main bearing bore diameter - less bearings
2.933 in.
2.9334 in.
(74.50 mm)
(74.508 mm)
Main bearing inside diameter - normal
2.7574 in.
2.7582 in.
(70.04 mm)
(70.060 mm)
Main bearing inside diameter - minimum
2.6984 in.
2.7001 in.
(68.54 mm)
(68.583 mm)
Main bearing to crankshaft journal clearance - normal
0.0019 in.
0.0043 in.
(0.05 mm)
(0.11 mm)
Main bearing to crankshaft journal clearance - maximum
0.0059 in.
(0.15 mm)
Thrust bearings with stop rings
Outside distance of stop rings - nominal
1.4453 in.
1.4508 in
(36.711 mm)
(36.850 mm)
Outside distance of stop rings - maximum
1.5241 in.
1.5295 in.
(38.711 mm)
(38.85 mm)
Thrust bearing-to-journal - normal clearance
0.0059 in.
0.0123 in.
(0.15 mm)
(0.314 mm)
Thrust bearing-to-journal - maximum clearance
0.0157 in.
(0.4 mm)
6-7
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