Resto Q & A

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Noob question here. Does this driveshaft look to be out of phase? didn't want to take it apart for nothing. It seemed like it was feeling rough and kinda shaking when I drove it like this but it's solid as a rock if you try to move it by hand. Zero play in it.

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Transmission oil is coming out of the Ebrake again after that first drive a week ago. It's been dripping over the past week. I replaced the seals on the transmission already. Guessing that driving it for about 10- 15 minutes with an out of phase shaft could have done this. Do I need to replace the seals again?
 
Possibly. How does the surface that slides into the t-case on your parking brake drum look? It may need a sleeve. You can also get your tail piece machined to take two seals.
 
Possibly. How does the surface that slides into the t-case on your parking brake drum look? It may need a sleeve. You can also get your tail piece machined to take two seals.
When you say tail piece I don't know what you mean. Guessing you are referring to the ebrake part that slides over the splined shaft that sticks out the back of the Tcase?
 
Transmission oil is coming out of the Ebrake again after that first drive a week ago. It's been dripping over the past week. I replaced the seals on the transmission already. Guessing that driving it for about 10- 15 minutes with an out of phase shaft could have done this. Do I need to replace the seals again?

transfer case?
is there play in the shaft?
where exactly is the oil coming from?
a few vendors sell a 2 seal housing
did you put sealant on the splines? oil can migrate thru the splines.
 
When you say tail piece I don't know what you mean. Guessing you are referring to the ebrake part that slides over the splined shaft that sticks out the back of the Tcase?
Yes. It is the part where the speedometer gear enters into the side. I believe you can get one machined from Mark's Offroad or from Cruiser Brothers/Valley Hybrids. It is a common mod. You must remove the parking brake bits, the speedo cable and then the 5 or 6 bolts that hold that tail piece. There is one seal in it. By replacing it you end up with two output seals stacked on top of one another. It is a common mod that can really help against leaking. Additionally, if the machined end of the drum that enters that tailpiece has a grove worn in it, it will likely not seal. You can get a "speedi sleeve" that goes on the end and will cover any groove giving the seal a new surface on which to ride.
Finally (and cheaper) some guys will put silicone or some sort of sealant on the splined shaft so the splines between the shaft and inside of the drum are mostly sealed or before putting the nut on that holds the drum. It is possible that you are getting leakage through those inner grooves. If gear oil is dripping from inside the drum it is the seal if it is dripping from the end if the drum near your drive shaft it is likely the spines.
Like 3_puppies said above but with more words
 
Thanks guys I really appreciate the help here. I believe I have the drive shaft in phase now. The grease nipples are all on the same side but they are pointing in different directions. I put the arrows in the pic to show which direction each end's grease nipple points.

Phased.webp
 
Tail piece/speedo gear housing
Screenshot_20260807_135930_Chrome.webp

See how the seal is flush (top pic)? You can source one that can accomodate a second seal behind that first one. It requires the original piece be machined.
Screenshot_20260807_140135_Chrome.webp
 
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