Powertrax 4120 - Manual (Page 21)

21
If your differential case or thrust washers are excessively worn, your new Lock-Right Locker
may not be able to operate as it was designed. Therefore, two easy measurements must be
made before final assembly to assure that your new locker will function properly. To make
these measurements, proceed as follows:
1. Remove the existing spider gears, side gears and thrust washers from the differen-
tial case, and thoroughly clean it.
2. Install the Lock-Right couplers with the existing thrust washers in each end of the
case.
IMPORTANT
3. Place the spacers onto the centers of the couplers (wide side toward the axle splines if not symmetrical), and hold them
there.
4. Install the pinion shaft; carefully guide it past the spacers as it is being inserted through the holes in the case.
5. Measure the gap between each spacer and the pinion shaft with a feeler gauge. This gap should be between .005-inch
and .020-inch, with not more than a .008-inch difference between the two.
If your numbers are within the limits specified, remove the parts and begin your installation. If your numbers are not
within these limits, check the thrust washers and the differential case. If they are excessively worn or are damaged, they may need
to be replaced before installing your new Lock-Right Locker.
If you have any questions, call PowerTrax Customer Service at 1.864.843.9275 (8AM - 6PM ET) for further assistance.