North American Clutch & Driveline
Rockford, Illinois
Phone: (800) 383-9204
(815) 282-7960
Fax (815) 282-9160
www.naclutch.com
Clutch Adjustment
Note: New power take-offs must have clutch adjustment checked before being placed
into service and after the first 4 to 8 hours of operation. This includes any power take-
offs with new driving plates. New plates have a wear in period and the clutch may re-
quire several adjustments before the new plates are worn in.
The clutch must be adjusted if it overheats, does not pull, or the operating lever jumps
from the engaged position.
Adjustment measurements are made by fitting a torque wrench with a 1 1/2" socket over
the hex end located at the bottom of the hand lever. Grasp only the torque wrench when
making measurements.
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2.
3.
DISASSEMBLY
Power Take-Off Disassembly
1.
2.
3.
4.
Disconnect any power engagement devices from the operating shaft if so
equipped.
Remove the hand hole plate from the housing and turn the clutch shaft assembly
until the adjusting ring lock pin can be reached.
Depress the adjusting ring lock pin and turn the adjusting yoke or ring to the right (or
clockwise when looking at the flywheel) until the operating shaft requires 240-300
ft.-lb or 325-410 Nm of peak torque to engage the clutch.
Remove all attached parts from the output end of the power take-off.
Remove the hex-head capscrew securing the hand lever to the operating shaft.
Remove the twelve hex-head capscrews securing the power take-off to the engine fly-
wheel housing. Use two 3/8-16UNC x 1 1/2 bolts for pusher screws in the two tapped
holes provided in the housing flange. Remove the power take-off from the engine.
Remove the 8 hex-head capscrews securing the drive ring to the engine flywheel.
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