North American Clutch & Driveline
Rockford, Illinois
Phone: (800) 383-9204
(815) 282-7960
Fax (815) 282-9160
www.naclutch.com
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6. With the indicator mounted as in the paragraph above, adjust the indicator stem so that it
will ride on the driving ring bore of the engine flywheel. See Figure 6. Rotate the flywheel. The
driving ring bore eccentricity of the engine flywheel should not exceed 0.005 inch maximum
total indicator reading. Thrust on the flywheel should be in one direction at all times to obtain a
correct reading.
7. Readjust the indicator so that the stem will
ride on the pilot bearing bore of the flywheel. See
Figure 5. Rotate the flywheel. The eccentricity of
the pilot bearing bore should not exceed 0.005
maximum total indicator reading. Eccentricity
between the driving ring pilot bore (Figure 6)
and pilot bearing bore (Figure 5) should not
exceed 0.009 inch total indicator reading.
INSTALLATION
Avoid excessive wear or scrubbing of parts due
to misalignment between the engine and the
Power Take Off. If wear is experienced check
the following:
Figure 4: Checking Driving Ring Surface
of Engine Flywheel
Figure 5: Checking Pilot Bearing Bore of
Engine Flywheel
Figure 6: Checking Driving Ring Bore of
Flywheel
