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  TM 5-6115-465-34
NAVFAC P-8-625-34
T.O. 35C2-3-446-2
TM 06858B/06859D-34
Table 1-1. FITS AND TOLERANCES
Component
Mfg's Tolerances
Desired Clearance
Maximum
Maximum
Minimum
Maximum
Minimum
Maximum
Allowable
Allowable
Wear
Clearance
CYLINDER BLOCK:
3.7490
3.7510
Cylinder bore dia.
0.0050
3.7505
3.7515
Cylinder bore dia (Bohn)
Cylinder bore out of round
0.0005
0.0030
Cylindcr bore taper
0.0005
0.0020
Main brg. bore-less brgs.
3.0005
3.0870
2.1870
Camshaft brg. bore-less brgs.
2.1880
Oil pump bore
2.0000
2.0005
Valve tappet bore
0.748
0.7500
Warpagc
0.0003
Milling
0.00(-)5
CRANKSHAFT:
2.8734
Main brg. journal dia.
2.8744
0.0030
Main brg. journal out of round
0.0003
0.0020
Main brg. journal taper
0.0003
0.0015
Main brg. run-out at center
0.0020
().0030
2.3730
Corm. rod journal dia.
2.3740
0.0020
Corm. rod journal out of round
0.0003
0.0020
Corm. rod journal taper
0.0003
0.0015
Fillet radii
0.1400
0.1700
Crankshaft main brg. clearance
0.0009
0.0034
0.0070
Crankshaft thrust clearance
0.0050
0.0100
0.0150
4.3100
4.3150
Seal surface dia. - rear
0.0150
Seal surface dia. - front
1.8740
1.8750
0.0150
CONNECTING ROD:
Length - c to c
7.9980
8.0020
2.5260
Baring bore-less bearings
2.5270
Br. to crankhaft clearance
0.0010
0.0030
0.0050
Corm rod side clcarancc
0.0050
0.0120
0.0200
1.2503
1.2508
Piston pin bushing bore
0.0015
Piston pin bushing bore-Icss
bushing
1.4370
1.4380
CAMSHAFT:
Bearing journal dia.
2.0530
2.0540
0.0020
1.7250
Lobe diameter - base to tip
1.6890
0.0100
Journal run-out in vee blocks
0.0010
0.0040
Bearing clcarancc
0.0015
0.0035
0.0060
End thrust
0,0015
0.0055
0.0120
Back lash camshaft to crank
0.001
0.003
gear
PISTON:
Clearance in cyl. bore (pull on
5 lb.
8 lb.
1/2x0.0050 ribbon)
Clearance in cyl. bore (pull on
3.7445
3.7455
1/2 x .005 ribbon (Bohn)
1.2500
Piston pin bore
1.2502
0.0010
Width of ring groove - top -
1/8 nom.
Keystone
Width of ring groove - 2nd
0.0975
0.0990
0.0050
&3rd comp.
Width of ring groove - top -oil
0.1880
0.1895
0.0050
control
Width of ring groove - lowcr oil
0.1880
`
0.1890
0.0050
control
PISTON PIN:
Length
3.0350
3.0400
1.2498
Diameter
1.2499
0.0020
Clearance in piston
0.0000
0.0005
0.0020
Clearance in connecting rod
0.0005
0.0012
0.0050
1-8
Change 12
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