Rear axle change out problem

[hammerman]

91 ranger axle code 86 3:73 non- limited slip removed and replaced with 89 ranger axle code f6 3:73 limited slip.
When in 4 wheel drive on snow it seems to, at so many feet of travel, spin the rear wheels , mostly drivers side.
Front tires and rear tires are matched sizes but not matching tread pattern.
Rear tires are more worn down.
At this time the tags on housings are indicating gearing matching axle code on door panel.
Is it so simple that it is a traction differentiation between front and rear tires?
If not traction and the gearing has been altered is there a way to determine ratio by the gear tooth count? Is there info on this procedure?

 

[Earl43P]

http://www.therangerstation.com/Magazine/Feb 06/tech.htm
http://www.therangerstation.com/tech_library/LockerComparo.html

Sounds like your Limited Slip clutches are worn.

http://www.therangerstation.com/Magazine/Winter2002/hubs.htm

Front automatic hubs take a while to engage.



To calculate your installed ratio:
Jack up the axle
Mark the drive shaft with chalk at 3 or 9 o'clock
Mark the inside of the tire at 12 o'clock
Turn the drive shaft enough rotations to make the tire spin one revolution

3.73 should take 3 and 3/4 driveshaft turns for one revolution of the tire
4.10 would take just past 4 revolutions