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Page Title:
Table 1-1. Repair and Replacement Standards - Continued |
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 TM 10-3930-630-34
Table 1-1.
Repair and Replacement Standards - Continued
Point of
New Parts
Fit, Tolerance or
Measurement
Min
Max.
Wear Limit
Engine - Continued
Connecting Rods:
Hole Diameter:
Bushing
0.913
0.914
Bearing
2.1865
2.1870
Bearing Thickness
0.0613
0.0616
0.0608
Crankpin Diameter
2.0619
2.0627
2.0609
Clearance 0.0006
0.0022
Desired Clearance
0.0015
0.0015
0.0032
Side Play
0.006
0.010
Desired Play
0.006
0.006
Piston Pin
Length
2.676
2.691
Diameter
0.8591
0.8593
0.8588
Bushing Hole Diameter
0.8595
0.8597
0.8607
Clearance
0.0002
0.0006
Main Bearings:
Diameter of Bore
2.5615
2.5622
Bearing Thickness
0.0925
0.0928
0.0920
Journal Diameter
2.3744
2.3752
2.3734
Clearance Limits
0.0007
0.0028
Desired Clearance
0.0015
0.0015
Crankshaft End Play
0.002
0.006
Center Flange Bearing:
Thickness
0.0926
0.0929
0.0921
Clearance Limits
0.0005
0.0026
Desired Clearance
0.0015
0.0015
Camshaft:
Journal Diameter:
Front
1.8715
1.8725
1.8705
Center
1.7455
1.7465
1.7445
Rear
1.2465
1.2475
1.2455
Bushing Inside Diameter:
Front
1.8745
1.8755
Center
1.7495
1.7502
Rear
1.2496
1.2505
End Play
0.005
0.009
Bore in Cylinder Block:
Front
1.9995
2.0000
Center
1.8740
1.8750
Rear
1.3745
1.3750
Intake Valves:
Stem Diameter
0.3406
0.3414
0.3386
Stem Clearance
0.0008
0.0026
0.0046
Desired Clearance
0.0015
0.0015
Valve Clearance
0.012
Exhaust Valves:
Stem Diameter
0.3377
0.3385
0.3357
Stem Clearance
0.0037
0.0055
0.0075
Desired Clearance
0.0045
0.0045
Valve Clearance
0.020
Valve Guides:
Outside Diameter
0.6565
0.6575
Stem Hole Diameter
0.3422
0.3432
0.3447
Extension above Block
1.812
1.812
Contact Face to Guide
1.4688
1.4688
Length
2.3125
2.3125
Valve Springs:
Diameter
0.9688
Length-Valve Closed
1.7031
Load-Valve Closed
47 lbs. 53 lbs
42 lbs.
Length-Valve Open
1.4219
Load-Valve Open
96 lbs. 104 lbs
86 lbs.
1-3
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