Question about Lincoln Navigator
I baught the four wheeler with out front axles. I put some in and all four wheels spin even with the demand 4x4 switch is in the off position. is the switch bad?
Posted by Anonymous on
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Posted on Jan 02, 2017
There is a vaccuum operated switch located on the transfer case that sends vaccum to the accuator that pulls a cable that locks the front end in. Check for vac coming in and out of this switch if no vac out replace it. This switch is a very common problem. You can find them at most parts stores in the help section #49315. please rate.
Posted on Dec 08, 2008
Normal thing that happens as long as onone (worked) on it, is the vacume hose going to the engage sevevo under the battery box has fell of on either end or is brocken on the way there. Then the once or now leaky battery acid ate up this same servo. then the cable going to the front axel breaks sticks falls off or even someone needing one climbed under your truck while parked somewhere to get one to replace their brokeen one now you don't have one then theaxel engage arm or gearset is damaged
Posted on Aug 16, 2009
On the front axle of your Suburban there is a thermally (an internal heater) activated devise that pushes on a lever to engage the axle. There is a technical service bulletin ( #76-43-01A) on this problem but the repair isn't cheap.It involves installing an updated devise with a DC motor from General Motors which also requires a new wire harness.
I have found that installing an aftermarket one (available at your local autoparts store) that just bolts on will work just as well.
It just threads in to a housing and is very easy to replace.
Posted on Nov 02, 2009
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