North American Clutch & Driveline
Rockford, Illinois
Phone: (800) 383-9204
(815) 282-7960
Fax (815) 282-9160
www.naclutch.com
13.2.5 Raise the PTO off the wood block. Lightly tap on the drive shaft to move it downward
against the rear bearing cup.
13.2.6 Again read the dial indicator. It should have returned to “0”. If it didn’t, repeat 13.2.3
thru 13.2.5 to obtain an accurate reading.
Main bearing end play should be: (Configurations A, B, F, and G): Grease lubricated
bearings: .006” - .010” (loose) (Check with bearings lightly oiled, not greased)
13.2.7 If adjustment is necessary, proceed as follows:
(Configurations A, B, F, and G ONLY): Rotate the bearing retainer clockwise to decrease or
counterclockwise to increase the setting, then repeat 13.2.1 thru 13.2.6 to verify the proper
setting has been attained.
13.2.8 Install the adjustment lock.
14.0 INSTALL THE CLUTCH ON THE DRIVE SHAFT
14.1 Support the PTO under a hoist, with the output end of the drive shaft resting on a hard
wood block.
14.2 Install 3/4” -10 eyebolts in the holes located in the front (flywheel) face of the clutch
body. Suspend the clutch on the hoist Caution: Do not thread too deep. See 7.3.6.
14.3 Carefully lower the clutch on the drive shaft. As the release bearing approaches the
clutch release yoke, rotate the yoke upwards to engage the bearing carrier trunnions in the
cradles of the release yoke.
14.4 Just before the clutch becomes seated on the taper of the drive shaft, rotate the clutch
to align the keyways and install the key (28) 1/2 way into the keyway.
Note: If the key is installed to the bottom of the keyway before the clutch is completely
seated, it may restrict proper seating of the clutch.
14.5 Seat the clutch on the drive shaft
14.6 Drive the key the rest of the way into the keyway.
50