North American Clutch & Driveline
Rockford, Illinois
Phone: (800) 383-9204
(815) 282-7960
Fax (815) 282-9160
www.naclutch.com
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14.7 Place the locking washer (27) on top of the clutch. Locate the tab in the keyway.
14.8 Install and tighten nut (26) against the locking washer. Torque to:
14.9 Using a soft but heavy mallet, strike the clutch body to drive it down onto the drive
shaft Check the torque on the nut to be sure it has not loosened. Caution: Be sure the drive
shaft is resting on the wood block before striking the clutch body so the force of the impact
can be absorbed by the wood block rather than by the bearing races.
14.10 Bend an edge of the locking washer (27) up flat against one flat of the nut (26).
14.11 Check to be sure the clutch and housing are installed properly and in alignment If the
readings exceed the maximum T.I.R. (total indicator reading), repeat installation of the clutch
and/or housings to bring the readings into specifications.
14.11.1 Securely support the PTO beneath the rear of the housing with the bell housing and
clutch end up. The output shaft end must hang free and be suspended on the bearing races.
14.11.2 Mount the base of a dial indicator on the face of the clutch body. Locate the tip
on the bell housing mounting face. Slowly rotate the clutch and shaft to read face runout.
Maximum runout must not exceed:
SAE1 Housing .008 (.203 mm)
14.11.3 Move the tip to read the O.D. of the housing pilot and repeat as in 14.11.2.
Maximum runout must not exceed:
SAE1 Housing .008 (.203 mm)
14” HD
14” HD (DP)
14” HD (TP)
225-230 ft.- lbs. (305-312 Nm.)
225-230 ft.- lbs. (305-312 Nm.)
255-260 ft.- lbs. (345-353 Nm.)
Mount Dial
Indicator Base
on face of clutch
body.
14.11.b
Tip reads housing
mounting face.
14.11.c
Tip reads housing
mounting pilot