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TM 9-2330-398-24
4-1.
ENGINE ASSEMBLY REPAIR (continued).
Table 4-1. Repair and Replacement Standards (continued)
(All values are in inches unless otherwise specified.)
Manufacturer’s Dimensions
Component
and Tolerances
Maximum Allowable
Minimum
Maximum
Wear Limit
CYLINDER HEAD:
Warpage (longitudinally)
0.001
0.0015
Warpage (laterally)
0.001
0.0015
CAMSHAFT:
Bearing journal diameter - front
2.500
2.505
0.002
Bearing journal diameter - rear
1.1875
1.1880
0.002
Bearing clearance limit
0.0012
0.0037
0.0057
Camshaft end play
0.007
0.039
0.045
Cam tappet hole diameter
0.7505
0.7515
N/A
Cam tappet diameter
0.7475
0.7480
N/A
CONNECTING RODS:
Large bearing bore
2.1871
2.1876
2.1886
Small bushing bore
1.044
1.045
1.0455
Length-center to center
5.998
6.002
6.002
Bearing-to-crankshaft clearance
0.0010
0.0033
0.0040
CRANKSHAFT:
Main bearing journal diameter*
2.2430*
2.2435
0.001
Crankshaft main bearing clearance
0.0024
0.0049
N/A
Connecting rod journal diameter
2.0600
2.0605
N/A
End play, crankshaft
0.010
0.015
0.015
CYLINDER BLOCK:
Cylinder bore
3.2495
3.2505
0.005
PISTON;
Clearance in cylinder bore
0.0050
0.0070
0.005
Bore, piston pin
0.9900
0.9903
0.9903
Ring groove width - top
0.0970
0.0980
0.005
Ring groove width - 2nd and 3rd - compression
0.0965
0.0975
0.005
Ring groove width - 4th oil control
0.1880
0.1895
0.005
* Replacement bearing only.
‚ Ship controlled
4-17
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