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 TM 55-1905-221-14-1
Table 1-1. Engine Repair and Replacement Standards (American Standard) (Continued).
Manufacturers'
Dimensions and
Desired
Component
Tolerances In Inches
Clearance
Maximum*
Allowable
Wear and
Minimum
Maximum
Minimum
Maximum
Clearances
Inches
Inches
Inches
Inches
In Inches
CAMSHAFT AND BALANCE SHAFT BEARINGS
Inside diameter
Front and rear................................ ..............
1.5000
1.5010
..........
..........
..........
Center and intermediate...............................
1.5010
1.5030
..........
..........
..........
Clearance-bearings-to-shaft
Front and rear (next to flange) .....................
..........
..........
0.0025
0.0040
0.0069
Center and intermediate...............................
..........
..........
0.0025
0.0050
0.0090
Outside diameter of bearings
Front and rear................................ ..............
2.1880
2.1885
..........
..........
..........
Intermediate................................ .................
2.1840
2.1860
..........
..........
..........
Diameter of block bore................................ ....
2.1875
2.2885
..........
..........
..........
Clearance-bearings-to-block ...........................
..........
..........
0.001 .
0.0005
..........
Front and rear................................ ..............
..........
..........
press..
loose ..
..........
Intermediate................................ .................
CAMSHAFT AND BALANCE SHAFT GEARS
Backlash ................................ .........................
..........
..........
0.0030
0.0080
0.010
Gear inside diameter................................ ....
1.1865
1.1875
..........
..........
..........
Clearance-gear-to-shaft ................................ ..
..........
..........
0.0015
0.0000
..........
................................ ................................ ....
..........
..........
Press
IDLER GEAR
Backlash ................................ .........................
..........
..........
0.0030
0.0080
0.010
Preload-variation on pull 2 lbs, 11 oz ..............
lb ..
6 lbs
..........
..........
- 6 3/4 lbs
CRANKSHAFT TIMING GEAR
Backlash ................................ .........................
..........
..........
0.0030
0.0080
0.010
Gear inside diameter................................ ....
4.7490
4.7500
..........
..........
..........
Clearance-gear-to-crankshaft..........................
..........
..........
0.001 .
0.001..
..........
................................ ................................ ....
..........
..........
press..
loose
1-17
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