TH400 failed...
Thread Starter
Teching In
Joined: Feb 2013
Posts: 33
Likes: 0
From: London, KY
TH400 failed... Pulled my pan to start working on my trans issue I incurred last summer. Trans ran great for about a month last summer when I got my truck on the road finally. Last day I drove it, my trans pressure gauge was dropping to 0 psi at idle and then back up with throttle. Pulled the pan this eve to find pieces of the rear case roller thrust bearing laying in the pan. What would have caused this to happen? I checked my clearances when building but it looks like the bearing was loading hard against the case before it failed. The trans was built with a Jakes stage 2 kit and everything seemed to go together well. What should I be looking for when I pull it apart? Also, there was a slight hesitation between the 1-2 shift that I didn't like. What can I do to tighten that up? The trans has a manual reverse transbrake vb, was dual fed, and had about 220 psi line pressure. Need some insight before I rebuild again...
TECH Junkie
Joined: Jul 2015
Posts: 3,012
Likes: 48
Pulled my pan to start working on my trans issue I incurred last summer. Trans ran great for about a month last summer when I got my truck on the road finally. Last day I drove it, my trans pressure gauge was dropping to 0 psi at idle and then back up with throttle. Pulled the pan this eve to find pieces of the rear case roller thrust bearing laying in the pan. What would have caused this to happen? I checked my clearances when building but it looks like the bearing was loading hard against the case before it failed. The trans was built with a Jakes stage 2 kit and everything seemed to go together well. What should I be looking for when I pull it apart? Also, there was a slight hesitation between the 1-2 shift that I didn't like. What can I do to tighten that up? The trans has a manual reverse transbrake vb, was dual fed, and had about 220 psi line pressure. Need some insight before I rebuild again...
Thread Starter
Teching In
Joined: Feb 2013
Posts: 33
Likes: 0
From: London, KY
The Torrington is a double caged roller that rides in its own race and the race rides against the case. You would have to be an idiot to put steel rollers against aluminum. It's part of the roller upgrade that Jake has in his kit.
