Selec-trac question

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markllo

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On a 02 Liberty Selec-trac with a limited slip rear differential in part time 4wd:

1. Is the rear diff locked in partial 4wd so the limited slip does not matter or does the limited slip diff still distribute power between the two rear wheels?

2. Will the front wheels get even power in part time 4wd or will a spinning front wheel get more power like a rear diff in a simple 2wd system.

This site https://www.jeep.com/4x4/loader.swf says that in partial 4wd all four tires get traction which implies that both the center and the rear and front differentials lock. Is this true?
 

TwoBobsKJ

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On a 02 Liberty Selec-trac with a limited slip rear differential in part time 4wd:

1. Is the rear diff locked in partial 4wd so the limited slip does not matter or does the limited slip diff still distribute power between the two rear wheels?

2. Will the front wheels get even power in part time 4wd or will a spinning front wheel get more power like a rear diff in a simple 2wd system.

This site https://www.jeep.com/4x4/loader.swf says that in partial 4wd all four tires get traction which implies that both the center and the rear and front differentials lock. Is this true?

Th transfer case locks the front and rear diffs together but does nothing to lock each axles' wheels together. In other words, a wheel can still spin on an axle and the locked differential won't change that. In your case the rear TracLoc will help keep that axle's wheels from spinning independently (but won't stop single wheel spin completely) but the front wheels will spin separately.

The Part Time setting keeps the front and rear running at the same speed; in a turn, the front and rear wheels all spin at different speeds but the PT setting makes them all run at the same speed. The transfer case doesn't "differentiate" the speeds between the front and rear therefore the driveline 'binds' in a turn on high traction surfaces like pavement and wet roads.

The SelecTrac transfer case has a Full Time setting that does 'differentiate' between the front and rear axles. For that reason it can be run 'full time' on any surface like an All Wheel Drive vehicle. I have a SelecTrac T-case and frequently run it in Full Time during the winter no matter the surface. Convenient when roads are snow covered, wet and everything in between.

Bob
 

Emoto

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I agree with Bob.

In short, the position of the transfer case control lever does not in any way affect front or rear wheel differential function.
 

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