Transfer case leaking problem...

MorphiasX · 01-10-2005, 09:03 PM

OK i have a leak on the back of my transfer case somwhere, because fluid is leaking out and getting on the driveshaft and spraying on the bottom of the truck the whole width of the truck. So i was told that it was the transfer case rear output shaft oil seal, so i went ahead and bought a new seal from Napa. I go to change it out, and my grandpa (retired mechanic) takes a look, and realizes theres some play in the driveshaft, both turning and moving up and down a little bit. So he said there is a bushing or bearing worn out inside, as well as i will probably need to replace two seals (as shown in diagram). It appears that the seal i got was the one circled in red, although the piece there appears to be clean, so it leads me to think that the seal that is leaking is the one circled in blue, but why is there an oil seal there, doesnt make sense to me? And what is it called so i can buy it? Am i just going to need to drop the driveshaft, pull off the extension housing, and pull out the shaft and replace a bearing, then put it all back together, replacing those two seals? Is it that easy?

EDIT:
Here is a pic of the rear output shaft diagram (mine is W/O ADD):

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Yoter · 01-10-2005, 09:08 PM

I would assume the outer one is more of a dust seal to keep crap out but still acts as a secondary seal to back up the primary. assumption. never dug into doing that job so cant advise you on that.

RockComa · 01-11-2005, 09:13 PM

The seals aren't that bad to change. If your going into it though to replace a bearing I'd go ahead and do them all. and the seals at the same time especially if your dropping the case.

01-11-2005, 09:13 PM	#3 (permalink)
RockComa Registered User Join Date: Dec 2003 Location: Wilmington NC Posts: 148	The seals aren't that bad to change. If your going into it though to replace a bearing I'd go ahead and do them all. and the seals at the same time especially if your dropping the case. __________________ My truck gets 1 new dent and pops 2 old ones out 98 Tacoma SAS'ed marlined geared locked etc etc 04 Rubicon wrecked soon to be new playtoy 05 Titan current concrete commando

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01-10-2005, 09:08 PM	#2 (permalink)
Yoter Guest Join Date: Jun 2003 Posts: 5,048	I would assume the outer one is more of a dust seal to keep crap out but still acts as a secondary seal to back up the primary. assumption. never dug into doing that job so cant advise you on that.