TM 5-4310-354-14
Table 5-2. Repair and Replacement Standards
Maximum
New parts
allowable
Component
wear/
clearance
Minimum
Maximum
ENGINE
Cylinder Block:
Cylinder bore diameter ..................................................................
3.749 in.
3.751 in.
(95.225 mm)
(95.275 mm)
Cylinder bore out-of-round ............................................................
0.0005 in.
0.0030 in.
(0.0127 mm)
(0.0762 mm)
Cylinder bore taper ........................................................................
0.0005 in.
0.0020 in.
(0.0127 mm)
(0.0508 mm)
Main bearing bore, less bearings ................................................
3.0665 in.
3.0670 in.
(77.8891 mm)
(77.9018 mm)
Camshaft bearing bore, less bearings ........................................
2.187 in.
2.188 in.
(55.550 mm)
(55.575 mm)
Oil pump bore .................................................................................
2.000 in.
2.0005 in.
(50.8000 mm)
(50.8127 mm)
Valve tappet bore ...........................................................................
0.7494 in.
0.7500 in.
(19.0348 mm)
(19.0500 mm)
Crankshaft:
Main bearing journal diameter .....................................................
2.8734 in.
2.8744 in.
0.0030 in.
(72.9844 mm)
(73.0098 mm)
(0.0762 mm)
Main bearing journal out-of-round ...............................................
0.0003 in.
0.0020 in.
(0.0076 mm)
(0.0508 mm)
Main bearing journal taper ............................................................
0.0003 in.
0.0015 in.
(0.0076 mm)
(0.0381 mm)
Main bearing run-out at center .....................................................
0.0020 in.
0.0030 in.
(0.0508 mm)
(0.0762 mm)
Connecting rod journal diameter .................................................
2.373 in.
2.374 in.
0.002 in.
(60.274 mm)
(60.300 mm)
(0.0508 mm)
Connecting rod journal out-of-round ...........................................
0.0003 in.
0.0020 in.
(0.0076 mm)
(0.0508 mm)
Connecting rod journal taper ........................................................
0.0003 in.
0.0015 in.
(0.0076 mm)
(0.0381 mm)
Crankshaft main bearing clearance ............................................
0.0009 in.
0.0034 in.
0.0070 in.
(0.0229 mm)
(0.0864 mm)
(0.1778 mm)
Crankshaft thrust clearance .........................................................
0.005 in.
0.010 in.
0.015 in.
(0.127 mm)
(0.254 mm)
(0.381 mm)
Seal surface diameter, rear ..........................................................
4.310 in.
4.315 in.
0.015 in.
(109.474 mm)
(109.601 mm)
(0.381 mm)
Seal surface diameter, front .........................................................
1.874 in.
1.875 in.
0.015 in.
(47.600 mm)
(47.625 mm)
(0.381 mm)
Connecting Rods:
Length, center-to-center ................................................................
7.998 in.
8.002 in.
(203.149 mm)
(203.251 mm)
Bearing bore, less bearings ..........................................................
2.526 in.
2.527 in.
(64.160 mm)
(64.186 mm)
Bearing to crankshaft clearance ..................................................
0.001 in.
0.003 in.
0.005 in.
(0.0254 mm)
(0.0762 mm)
(0.127 mm)
Side clearance ................................................................................
0.005 in.
0.012 in.
0.020 in.
(0.127 mm)
(0.305 mm)
(0.508 mm)
Piston pin bushing bore, less bearing .........................................
1.437 in.
1.438 in.
(36.500 mm)
(36.525 mm)
Piston pin bushing bore .................................................................
1.2503 in.
1.2508 in.
0.0015 in.
(31.7576 mm)
(31.7703 mm)
(0.0381 mm)
5-14
