Originally Posted by
kc_nitro_rc
In my opinion the thrust bearing is usually the first thing to go. A lot of guys will flip the rings over and use the other side with the same balls. Read the sticky note thing about building a ball diff at the beginning of this area of the forums.
Easiest way to tell is just to replace them. But make sure the rings don't have a groove in them. Same goes for the thrust bearing.
Use the clear AE lube on the big balls & black lube on the thrust assembly. It's cheap, works great, and lasts a long time. Sure, everyone has their magic mojo lube. The AE stuff is good. Pro guys use it.
Thanks for the reply. I rebuilt the diff according to the videos posted by Racer53 in the sticky at the top of this forum. It's still not working right. I replaced the thrust balls but reused the diff balls. Also replaced the rings, spring, etc.
AE makes two clear lubes/greases. One is called silicone grease and the other is diff lube. The guy at the LHS said they are the same thing so I used the silicone grease since I already had it. But on the package it says that it is not for use with stealth transmissions. The guy at the store said that a stealth transmission is a gear diff. The silicone stuff seems thicker than what is used in the videos and now the diff won't work right . When the truck is on the stand it seems fine but if you put it on the ground it barely moves. I'm trying to figure out if I should replace the balls or if I used the wrong lube.