[warehimer34060]

I'm hearing a grinding noise right by the passenger side of the transfer case like the one in the video below so I am thinking it was the chain. I pulled the case and found out that the chain has tension and is not scrapping the bottom. While looking it over and cleaning out the internal components I spun the input planetary gear(the one closest to the transmission) and it spins ok but it seems to make a slight grinding noise and has a slight wobble as it spins around. Since I have never taken these things apart I am not sure if this is normal gear noise, the gears appear ok from the outside but I haven't taken apart the input bearing and planetary gear assembly. Any ideas? Thanks

YouTube

YouTube

[ezflip]

most like the the input shaft bearing. Fairly easy to replace, especially since you already have the case out.

[warehimer34060]

How loose should the planetary gear be because I took it out and spun it and it was wobbling and making the noise by itself. I mean, I think those gears are hydraulic so when the fluid expands then so does it.

[ratmonkey]

Originally Posted by warehimer34060

How loose should the planetary gear be because I took it out and spun it and it was wobbling and making the noise by itself. I mean, I think those gears are hydraulic so when the fluid expands then so does it.

They're in s fluid bath, no hydraulic pressure to the input planetary.

[warehimer34060]

So there shouldn't be any play in the gear?

[ratmonkey]

Originally Posted by warehimer34060

So there shouldn't be any play in the gear?

Pull the planetary assembly, if there's play in any of the gears you need a new case. I don't think I've ever seen a planetary set for sale alone.

[warehimer34060]

Yeah there was play in most of the gears. My WJ does have 183k miles on it so it makes sense... I ordered a case from a junkyard that was in perfect working condition. Hope this will solve my problem.