North American Clutch & Driveline
Rockford, Illinois
Phone: (800) 383-9204
(815) 282-7960
Fax (815) 282-9160
www.naclutch.com
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INSTAllATION
INSTAllATION TIPS
Tapered Roller Bearing Adjustment
1. Tapered roller bearing end play adjustment is different in SP114AM, SP214AM and SP314AM
Series Power Take-Offs for side load applications than it is for in-line applications. Insure that
the adjustment is correct for the application.
2. All SP114AM, SP214AM and SP314AM Series Power Take-Offs are manufactured at NACD’s
factory with the tapered roller bearing end play adjusted for side-load application.
3. Tapered roller bearing end play in SP114AM, SP214AM and SP314AM Series Power Take-
Offs used for in-line applications must be adjusted to specifications shown in Tapered Roller
Bearing End Play in the Description and Specifications section of this manual.
Alignment
4. The flywheel and flywheel housing alignment must be within specifications. Perform the
measurements shown in Prior To Installation in this Installation section.
5. Avoid excessive misalignment between the engine and PTO. Check the following if abnormal
wear of parts exists:
a. Excessive loads tend to deflect parts to which PTOs are mounted. A dial indicator can be
mounted on a rigid part of the engine or independently on the foundation to determine deflection
under actual operating conditions. See Support Plate, Belt or chain tension/Allowable Side
Load Pulls and Deflection Caused by Side Load Pulls in this Installation section and information
contained in the Description and Specifications section regarding these issues.
b. Readings taken before the drive is installed with the engine standing still and when under
operating conditions (with the engine off and all belts, chains, driveshafts and/or support plates
attached and secured with bolts torqued to specifications) will indicate the extent of deflection.
In no case should the deflection exceed 0.254 mm. (0.010 in.) (T.I.R.) at the bearing carrier.
Note: The dial indicator should never be applied with the engine running. This is unsafe and
could result in damage to the dial indicator.