North American Clutch & Driveline
Rockford, Illinois
Phone: (800) 383-9204
(815) 282-7960
Fax (815) 282-9160
www.naclutch.com
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1. Excessive loads tend to deflect parts to which power take-offs are mounted. To determine
deflection under actual operating conditions, a dial indicator may be mounted on a rigid part of
the engine, such as the crankcase. or independently on the foundation . Readings taken before
the drive is installed, with the engine standing still and when under actual operating conditions,
will indicate the extent of such deflection. In no case should the indicated deflection exceed
.010" at the bearing in the power take-off housing.
2. Place two guide studs in the flywheel housing bolt circle, close to the horizontal center line,
to assist in aligning the PTO on the engine flywheel housing.
3. Swing the PTO into position on the engine flywheel, sliding the pilot bearing (Figure 12, 25)
carefully together and meshing the driving ring with the driving plates. Secure the PTO to the
flywheel housing with twelve hex-head capscrews and remove the guide studs used. Use SAE
standard torque rating to torque capscrews.
4. Rap the end of the output shaft with a soft hammer to relieve any preload due to the pilot
bearing being pressed into the flywheel.
ADJUSTMENTS
CLUTCH
General
Periodic clutch adjustments are necessary for the continued efficient use of this power take-off.
Be sure engine is off before adjusting the clutch. Adjusting the clutch with the engine running
may result in personal injury and/or damage to equip ment.
NOTE: Clutches in new power take-offs require checking of adjustment after installation and
prior to opera tion.
New clutch plates have a wear-in period during which the clutch may require several
adjustments. The model C110 and C111 clutches described in this manual do not automatically
adjust to compensate for wear of the clutch facing(s), and therefore must be manually adjusted.
Maintaining the correct engagement pressure is the responsibility of the owner/operator.
