Table 1-1. Repair and Replacement Standard - Continued
Manufacturer's
Desired
Maximum
dimensions
clearance
allowable
Component
and tolerance
wear and
in inches
clearance
Minimum
Maximum
Minimum
Maximum
Piston skirt outside diameter (at 70'F)
Part No. 146750, 156220 and 168960
5.4870
5.4880
5.4830
Part No. 155420
5.483
5.484
5.479
Piston ring gap clearance (in new liners)
Part No. 147670
0.0170
0.0270
Part No. 154020
0.0130
0.0230
Part No. 122560
0.0150
0.0270
Camshaft:
Journal outside diameter
2.4960
2.4970
2.4940
Injector lobe total lift
0.1680
0.1720
0.1670
End clearance
0.0070
0.0110
0.0150
Gear Housing:
Crankshaft to seal bore (max. runout)
0.0040
Gear lash (use to align housing) all gears
0.0060
0.0090
Accessory drive cover bushing inside diameter
1.2525
1.2545
1.2555
Front cover:
Crankshaft to seal bore (max. runout)
0.0050
Cylinder Head
Cylinder head height
4.4950
5.5050
Minititum permissible height after
resurfacing
4.4650
Injector tip protrusion
0.1000
0.1150
0.1250
Injector sleeve-upper inside diameter
1.140
1.150
Valve guide inside diameter
0.4525
0.4532
0.4545
Protrusion above head
0.6950
0.7100
Crosshead guide outside diameter
0.4332
0.4335
0.4322
Protrusion above head
2.0900
2.1100
Crosshead
Inside diameter
0.4340
0.4360
0.4400
Valve insert
Thickness-standard intake
0.2590
0.2610
0.2790
0.2810
Outside diameter-standard
2.0025
2.0035
Swirl plate thickness
0.0200
0.0210
Head counterbore inside diameter-
standard
1.9995
2.0005
Valve seat angle
30
Valve seat width
0.1250
Valve edge thickness
0.0780
Valve stem outside diameter
0.4500
0.4512
0.4490
Valve springs
Part No. 128235
Free length 2.090
Load length:
Valve open 1.317
161 lbs
179 lbs
1565 lbs
No. of coils
6 1/3
Part No. 146732
Free length
2.090
Load length:
Valve open 1.237
80 lbs.
90 lbs
75 lbs.
No. of coils
7 3/4
Part No. 146731
Free length 2
.350
Load length:
Valve open 1.287
124 lbs
136 lbs
120 Ibs.
No. of coils
6 1/2
Rocker levers and shafts:
Lever bushing-inside diameter
1.1875
1.1905
1.1916
1-6
