North American Clutch & Driveline
Rockford, Illinois
Phone: (800) 383-9204
(815) 282-7960
Fax (815) 282-9160
www.naclutch.com
Clutch Shaft and Housing Assembly
1.
2.
3.
4.
5.
6.
7.
8.
9.
Clean the bearing cones and clutch shaft with isopropyl solvent to remove any oil
or grease residue.
Note: Do not use any oil or paraffin based solvents.
Use an arbor press to install the two bearing cones on the clutch shaft. Install the
cones one from each end with the black faces butting against the shoulder on the
clutch shaft.
Note: An alternative method to install the bearing cones is to heat them in an oven
at 275° F for one hour and install them immediately on the clutch shaft. Let the
bearing cones cool to room temperature after installation. Apply force as the bear-
ing cools ensuring that it remains seated.
Use a piece of steel tubing slightly smaller in diameter than the outer diameter of
the rear main bearing cup to press the cup into the bearing carrier, back face of the
cup rearward. Press the cup to the bottom of the bore.
Set the bearing carrier in a large bench vise, output end down.
Coat the bearing rollers and both bearing cups with a light film of SAE 10 oil.
Install the clutch shaft with bearing cones into the bearing carrier, output end down.
Install the forward bearing cup into the bearing carrier. Use the same tubing as in step 3.
Install the bearing retainer into the bearing carrier until it seats against the forward
bearing cup (no end play)
Tighten the bearing retainer until there is 60 in.-lbs (6.8 N-m) of uniform drag torque
on the shaft while rotating, for new bearings.
Note: The drag must be constant. Rotate the shaft until the torque is constant or dis-
assemble the carrier and clutch shaft assembly and look for the cause of high spots.
Tighten the bearing retainer enough to produce 30 in-lbs. of uniform drag torque on
the shaft or used bearings. Follow the remainder of the procedure as written.
20