I need advice on my Tru Trac guys. It went out a block from my house. I heard something pop, then a louder than the motor whine from the diff. I yanked it all out and found my drivers side shim broke into 4 pieces. Everything else seems ok except some odd slag build up on the inside of the case (maybe from the shim going out) ? Does anyone have any idea how my shim could break ? The top cap bolt was not very tight (but not loose either).

• Should I just dremel down the slag and put it back together ?
• Is there a better-stronger cap available for a chevy 10 bolt diff ?
• Is there stronger shims available ?

RED ARROW POINTS TO SLAG BUILDUP IN CASE



Thx,
Pitt

 

Only thing I know that would help would be the Moser carrier studs and girdle cover.

 

Thanks. I found the thread from Daryl with my exact problem minus the broken shim. He has some good pictures and apparently I am one of many with this wear problem. Tru Trac needs to come up with a permanent fix.

 

Daryl's thread...awesome info.

https://www.performancetrucks.net/fo...s-dust-518911/

 

Yea, I hope I don't have any problems with mine once it goes in!

 

Are the auburn units better? Right now my truck is one tire fire and I'm looking to upgrade and do 4.10s soon but not sure what to run!

 

detroit LOCKER over here I beat the **** out of it almost daily, no issues what so ever and I havent seen many locker fail threads but far to many tru trac fails.
that shim breaking is strange, what was your case pre load? did you have one hell of a time pounding that shim in?

 

My vote is a 12 Bolt or 9" with a full spool and 4.30's. Make that truck break into the 10's.

 

I run an auburn and it has been awesome and reliable.

I wonder why the damn shim would break. Are you going to throw the tru trac back in?

 

Iv never seen a shim break and to break in almost even parts like that. Very weird.