Typhon Rear diff binds when I tighten the diff cover

[dure16]

Typhon TLR. The rear diff is butter smooth until I tighten the diff cover and then there is some resistance. It seems like it only binds at one spot on a full turn but the gears all look good.

The binding isn't super bad but might be enough to affect center diff action.

Any ideas?

 

[Jerry-rigged]

Any shims? Maybe remove a shim and see how it fits.

 

[Senton_Prime]

You prolly screwed the cover on too tight im guessing!

 

[JPWSRC]

Overtightened? If not, it's an assembly or shim issue. Did you install new O-rings?

 

[LicketySplit]

Any shims? Maybe remove a shim and see how it fits.

This question right here. If the answer is no then add a shim on the side opposite of ring gear and see how it is.

 

[dure16]

There were no shims. I muscled one in opposite the ring gear and it made the problem much worse.

Anything else I can try?

You prolly screwed the cover on too tight im guessing!

I also thought this might be the case. But if I loosen the screws enough to fix the problem, there’s a visible gap between the bulkhead and diff cover. Not going to work.

Overtightened? If not, it's an assembly or shim issue. Did you install new O-rings?

Are you talking about the o-rings inside the diff? No I didn’t install new ones.

 

[LicketySplit]

There were no shims. I muscled one in opposite the ring gear and it made the problem much worse.

Send a pic of exactly where you put that shim. It might help us.

 

[dure16]

Picture 1 shows where I added a shim and it made the binding worse (lot of consistent resistance).

Picture 2 shows the input gear and casing. Everything looks fine as far as I can tell.

Pictures 3-5 have no shim installed and it mostly rolls smoothly except for one part of a turn where it gets stuck.

 

[Jerry-rigged]

 

[dure16]

Alright the problem is fixed. The mesh was clearly too tight with no shims, and adding a shim opposite the ring gear just made the overall fitment too snug. There just wasn't enough room for a shim.

So I shaved the plastic down where the bearing touches the bulkhead (red circle below). I also shaved the diff cover at the same spot. I had to make room to push the ring gear farther left.

Then I added a shim opposite the ring gear and now it fit much better. Still allowed smooth movement. And no more binding.

Figured I'd share in case anyone else runs into the problem.