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front differential


noel

Well-Known Member
Joined
Sep 6, 2007
Messages
52
Vehicle Year
98
Transmission
Automatic
i know where there is a 98 EX 4x4 5.0 that the front diff froze up & busted the diff case & drive shaft ?????????? why ???? i can get it cheap
my Qs is i have a 96 EX 4x4 5.0 will all of the 96 stuff front diff,driveshaft,axle
& transfer case if needed swap to the 98 as its in better shape ?????????
 
The 98 likely leaked all the gear oil out of the front diff and destroyed itself. All of the 96 components should be exactly the same. You need to make sure the gear ratio is the same though.
 
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The 98 likely leaked all the gear oil out of the front diff and destroyed itself. All of the 96 components should be exactly the same. You need to make sure the gear ratio is the same though.

thx for reply they are both d4
 
My brother had a 2000 that we did this swap 3 times on before we figured out what was causing it. It kept overheating the front diff and the fluid would boil out the drivers side seal and make a horrible mess and the worst smell ever. What the problem was found to be is the viscous coupling was bad in the transfer case. You can check the viscous coupling by disconnecting the front driveshaft and leaving the Explorer parked on an incline for an hour. If the coupling is good, it should creep forward an inch or two. If not, the coupling is bad. And they are pretty expensive.

Also, one note. We also had it take out the constant velocity joint up where it attaches to the transfer case. We got one out of a 97 and it was too long. So somewhere the driveshaft did change lengths.
 
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