North American Clutch & Driveline
Rockford, Illinois
Phone: (800) 383-9204
(815) 282-7960
Fax (815) 282-9160
www.naclutch.com
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5. Check the torque by removing the hand lever (20) and installing special tool 236484AM onto
the operating shaft.
6. Turn the operating shaft with a torque wrench using an 1.5" socket.
7. Tighten the adjusting yoke until the operating shaft torque is set per inspection plate.
NOTE: Do not adjust the clutch too tight. Forces above maximum may cause clutch component
failure.
8. Remove the cotter pin or nail that is keeping the ad justing lock pin disengaged and engage
the lock pin.
NOTE: The hand lever on some units has a cast, hex adapter onto which a socket can be placed
and a torque wrench can be used to check the operating shaft torque.
BEARINGS
NOTE: Do not add grease until the tapered roller
bearings are adjusted.
The only approved method for adjusting tapered
roller bearings in NACD power take-offs is as
follows:
1. Tighten the adjusting nut (see Figure 8) and
rotate the shaft to align and seat bearing rollers.
Continue to tighten the adjusting nut until 60
lbs. in. pressure is required to turn the shaft.
Mark the notch used.
2. Back.off the adjusting nut the number
of notches shown in Figure 8 (3 1/4 to 4 1/4
notches).
3. Strike the output end of the shaft with a
soft hammer to seat the bearing outer race
against the bearing retainer. This should give
approximately the desired endplay.
Figure 8: Adjusting Endplay with
Adjusting Nut.
