Table 1-2. Repair and Replacement Standards -(Cont)
Manufacturers
Maximum
dimensions and
allowable
tolerances in
wear and
inches
clearance
Components
Minimum
Maximum
Crankshaft
Journal diameter for connecting rods
2.7470
2.7485
0.002
Journal diameter for main bearing
3.2465
3.248
0.002
Width between connecting rod journal checks
1.562
1.565
0.003
Width of main bearing journals
Front
2.147
2.167
0.020
Intermediates
1.685
1. 689
0.004
Center
2.061
2.063
0.002
Rear
2.014
2.017
0.003
Crankshaft end clearance
0.007
0.013
0.008
Separate type thrust flanges
Available in standard
size and 0.005, 0.010,
0.015 oversize
- - - -
Crankshaft journals may be ground
0.002, 0.010, 0.020 or
0.040 undersize
- - - -
Fit of crankshaft gear on crankshaft
0.001
0.003
i n t e r f e -
Main bearings:
r e n ce
Bore of front, intermediate, center, and rear
bearing (with capscrews tightened to specified
torque)
3.2499
3.2511
0.0038
Diameter of crankshaft main bearing journals
3.2465
3.248
0. 002
Bearing-to-journal clearance at front, inter -
mediate, center, and rear bearings (with cap-
screws tightened to specified torque)
0.0019
0.0046
0.0034
Overall length of main bearings
Front and Intermediate
1.432
1.442
0.010
Center
1.682
1.692
0.010
Rear
1.682
1.692
0.010
Undersize bearings available for service
0.002, 0.010, 0.020 and
0.040
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