North American Clutch & Driveline
Rockford, Illinois
Phone: (800) 383-9204
(815) 282-7960
Fax (815) 282-9160
www.naclutch.com
INSTALLATION
Preliminary Checks
Note: All measurements must be taken with the engine or motor mounted on its sup-
ports after the flywheel and housing have been thoroughly cleaned.
1.
2.
Figure 1: Checking Flywheel Housing Face
3.
4.
Figure 2: Checking Flywheel Housing Bore
5.
6.
Measure and record the engine crankshaft or motor shaft end play using a dial indica-
tor. Record this value, as it will be used later. ______________
Attach the indicator to the flywheel so the indicator is perpendicular to the flywheel
housing face and the indicator stem rides on the flywheel housing face.
See Figure 1.
Rotate the shaft through on entire revolution
and note the run out. The total indicator reading
must not exceed .008" (.2mm). Apply thrust onto
crankshaft in one direction to prevent crankshaft
end play from affecting run out measurement.
Reading the indicator so the stem rides on the
pilot bore of the flywheel housing. See Figure 2.
Rotate the shaft through one entire revolution
and note the run out. The total indicator reading-
should not exceed .008" (.2mm).
Remove the indicator base from the flywheel
and attach it to the flywheel housing face. Posi-
tion the indicator stem so that it rides where the
drive ring will set on the flywheel face.
See Figure 3.
Figure 1
Figure 2
6
