Powertrax 3710 - Manual (Page 19)

19
Use a light to see that the spacers (and thrust block, if
used) are in place and that the springs are working properly.
When the above installation steps are completed, all
the parts should be in exactly the same positions as they were
when the installation began. If the differential case has been
removed from the vehicle, the backlash and pre-load settings
should be unchanged from before and no further adjustments
will be needed. To be certain, rock the ring gear back and forth
to see if the backlash appears to be the same as it was prior to
the installation. If not, it will need to be reset with a dial indicator
as described in the shop manual. Rotate the ring gear one revo-
lution to be sure that nothing is binding.
Your LOCK-RIGHT installation should now be com-
plete. As a preliminary test only, prior to the final test on the
next page, rotate the tires back and forth (transmission out of
gear and drive shaft free). The drivers should randomly unlock
and “click” as the tires move. Note that the tires will NOT lock
together—this easy-unlocking characteristic is a unique feature
of the LOCK-RIGHT and is perfectly normal. Watch to be sure
that both sets of teeth engage and disengage. If they do, your
installation has probably been done correctly and your LOCK-
RIGHT is ready for its final test, described in Section 5 on page
21. Note that the clicking sound is much louder now than what
you will hear during driving because the cover is off and no oil is
present.
As an additional check to be sure that everything has
been installed correctly, use a small ruler, vernier caliper or
blade-type feeler gauge. The distance between the halves of
the LOCK-RIGHT, that is, between the two drivers, should be
about 5/32-inch (.152-inch, or 3,86-mm). The tolerance limits
are between .145-inch (3,68-mm) and .170-inch (4,32-mm). If
this distance is much over .170-inch, either the case is quite
worn or the thrust washers are missing or are too thin and the
problem should be corrected before proceeding further.