Powertrax 4120 - Manual (Page 19)

19
Your LOCK-RIGHT installation should now be complete.
As a preliminary test, rotate the tires back and forth (transmis-
sion out of gear and driveshaft free). The drivers should random-
ly 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.
Tire Diameters
To help assure a long life for your new LOCK-RIGHT, tire
diameters should be as nearly equal as possible. Contrary to
instructions that you may have read elsewhere, DO NOT change
the inflation pressure to vary the rolling radius of the tire! This
practice can be dangerous if one of the tires is under-inflated,
producing excess heat, faster tire wear and more difficult ve-
hicle control. The best way to equalize the rotation is to mea-
sure the circumference of all the tires, including the spare.
Choose ones that are within about 3/8-inch or less of each other
(do not change from side-to-side if they are radials). If one tire
is much more worn than the other one, they both should be re-
placed for safety reasons.
Testing Your Installation
1. Be sure that the vehicle is safely blocked. Leave the
axle assembly on the jack stands, with both tires free to rotate
and the emergency break off.
2. Put the transmission and transfer case in gear to
lock the drive shaft.
3. Rotate the other tires in the forward direction with
your hand until it stops, then hold it. That side of the LOCK-
RIGHT is now locked.
4. Rotate one of the tires in the opposite (reverse) di-
rection. The LOCK-RIGHT should “click” as the coupler attached
to the axle rotates.