Hello again,
I changed my fuel filter today (got hosed with gas!!) while down there I noticed some dripping transfer case fluid. There were some small drops where the rear drive shaft go into the transfer case. My guess a seal of some kind, however does it take a input or output seal? and would this be hard to change out? Also I figure its probably been drippin slowly for some time now so what kind of fluid should I refill the transfer case with and hows that project like. Thanks ahead of time and check out my truck on my avatar. I was gonna take a few snap shots of my CC but started raining while changing fuel filter. [/img]
Not too bad to fix. About $25 for a good seal. The transfercase uses Dextron III spec fluid. It might be a good time to change it if you have not done so yet.
If the transfercase should happen to be over filled, then you may have a seal leaking on the input side too. Transmission fluid can transfer and over fill the transfercase.
Check your U-joints while the driveshaft is off for the seal fix. Be prepared to replace them if they are loose or dry.
"Speed doesn't kill, suddenly becoming stationary does." - Richard Hammond
"Speed is just a matter of Money - How fast do YOU want to go?"-Mechanic from Mad Max-
If at first you don't succeed - Don't take up Skydiving! - ThunderIIKE7CSK
Rear transfercase output shaft seal. Yes.
You can use a screwdriver and hammer to gently tap the outer steel lip of the seal to remove it.
To install it you will need to find a pipe or big socket that just fits it. Then gently tap it in flush. A trip to the hardware store for a PVC pipe coupler might be a good way to go. Then use a plasic deadblow hammer to install it. A rubber mallet might work too. I'd be very gentle with a steel hammer hitting a plastic pipe if you go that route.
You might be able to use a punch and carefully tap around to get it in? That may serve only to test your patience as it pops out one side and then the other.
"Speed doesn't kill, suddenly becoming stationary does." - Richard Hammond
"Speed is just a matter of Money - How fast do YOU want to go?"-Mechanic from Mad Max-
If at first you don't succeed - Don't take up Skydiving! - ThunderIIKE7CSK
HenryJ wrote:...Check your U-joints while the driveshaft is off for the seal fix.
Yes you will need to remove the driveshaft.
Boy! You really did get lots of gas in the face on that filter change Better get outside for some fresh air!
"Speed doesn't kill, suddenly becoming stationary does." - Richard Hammond
"Speed is just a matter of Money - How fast do YOU want to go?"-Mechanic from Mad Max-
If at first you don't succeed - Don't take up Skydiving! - ThunderIIKE7CSK
So the transfer case seal for the rear drive shaft was leaking on my CC so I had it changed while getting s front end alignment. Wasn't long before it began leaking again so I change it myself today. Cleaned up the area around the transfer case and went for a short drive. It is still leaking. Any thoughts?
Last edited by Cajun on Tue May 30, 2017 7:55 am, edited 1 time in total.
The slip yoke is not pitted or rusted. it is very shiny. There is a shiny ring where the old seal sat on the yoke but no perceivably groove. The seal that I installed seems to be leaking worse that the other two. Is there another seal further into the transfer case that seals the splined shaft?
Bad seal is possible. If you ever have to change front axle seals do yourself a favor and buy GM ones. After going through 4 timken I gave up and was tired of tearing the front end apart. If your seal was original I would really look it over and compare it to what the replacement looks like. Some companies like to cheapen them up pretty bad, or even just get a bad bid on the part and end up with junk.
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Yes you will need to remove the driveshaft.
