Powertrax 3710 - Manual (Page 9)

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1. Thoroughly clean the differential case and wash re-
maining parts with solvent, then dry them.
2. Inspect the pinion shaft. Any noticeable grooves or
galling may weaken it and can also adversely affect the operation
of your new LOCK-RIGHT. If it is not in excellent condition, obtain
a new one.
3. Inspect the side gear thrust washers. They are im-
portant to the correct positioning of the LOCK-RIGHT parts. If
they are excessively worn or are cracked, obtain new ones. If
several thicknesses are offered, try to obtain the same size as the
old ones. NOTE: There should be TWO thrust washers of about
equal thickness, one under each side gear.
4. Inspect the thrust block (if used). Be sure that the
ends are smooth and not galled.
5. Inspect the case for any chips, cracks or similar
damage. Also inspect the bearings, if the case is out of the
vehicle. If the case or bearings look bad, replace them. However,
if you do, remember that the shims no longer will be correct; the
ring and pinion backlash and bearings pre-load will need to be
reset with a dial indicator as described in the shop manual.
LOCK-RIGHT Installation
Preparing the Parts for Assembly
1. Coat the teeth of the couplers and drivers, the large
center holes of the drivers, and both sides of the thrust washers
with medium grease. Also place a little grease in each of the two
window holes in each driver. The grease will help hold things in
place and assist with functioning until the gear oil circulates.
2. Place a shear pin into each window hole. It should
be about flush (Figure 2).