North American Clutch & Driveline
Rockford, Illinois
Phone: (800) 383-9204
(815) 282-7960
Fax (815) 282-9160
www.naclutch.com
17
Alignment -(Also reference SAE J-1033)
1. Bolt a thousandths increment dial indicator or gauge to the engine flywheel so that the
indicator is perpendicular to the face of the engine flywheel housing, and the indicator stem is
riding on the face of the flange. See Figure 2
2. Figure 2. Rotate the engine flywheel, always
keeping a thrust in the same direction, and
note the face deviation of the engine flywheel
housing flange. The face deviation must not
exceed the figures given in Table 2
All figures are Total Indicator Readings.
Table 2: Flywheel Housing Tolerances
3. With the indicator mounted as in the above paragraph, adjust the indicator stem so that it will
ride on the bore of the engine flywheel housing. See Figure 3.
4. Rotate the engine flywheel and note the bore ec centricity of the engine flywheel housing
bore. See Table 2.
5. Bolt a thousandths dial indicator or gauge to the engine flywheel housing so that the indicator
is perpendicular to the engine flywheel, and the indicator stem is riding on the inner face of the
flywheel. See Figure 4.
Rotate the flywheel. The variation of the face runout of the surface to which the driving ring is
bolted should not exceed 0.0005 per inch of diameter.
Figure 3: Checking Bore of Engine Flywheel
Housing
SAE
Housing
No.
00
0
1/2
1
2
3
4
5
6
.019
.016
.014
.012
.011
.010
.009
.008
.007
.019
.016
.014
.012
.011
.010
.009
.008
.007
Face
Deviations
Bore
Eccentricity
