Tko600 Warning!!!!

[ROUSHAC]

Originally Posted by Fordfan69

Hi guys,

Just wanted to give you an update. Over a week has gone by and I'm still haven't heard anything from Tremec. I think I will wait until the end of the week and then call them.

Also, I took 3rd gear over to a tool and die manufacturing co. and had them Rockwell test the gear for hardness themselves. It was 60-60.5 on the R. scale which he said was very very hard. He was surprised being that a metal file is just about a 65. It is a Chromemoly gearset though, so it might be right. I would love to know if there is a test to see if it is too brittle though. Anybody out there know? I might look into bringing it to a Metalurgist to see if he can tell me anything about the failure.

finally, when I rebuild this unit, I am definitely going to put gear mesh paint on all of the gears and test the mesh pattern, just like they do on the rear ends. There might be nothing wrong with the gear and it might have been from improper mesh/backlash. That will tell alot. I looked closely at second gear and I don't like the mesh pattern at all. That's what gave me the idea of checking them all.

Thanks very much for the comments and feedback. I'll keep you posted as soon as I hear back from Tremec.

Fordfan69,

From what I've read here, Tremec and Kesler made their determination based on a visual inspection.

It sure sounds like maybe a good idea to send that gear to Tremec and let them test it for hardness. To me that Rockwell number means a very brittle gear prone to breaking teeth off.

Possibly, they got a bad batch from heat treating. The worse they can say is nope that is the right hardness for our gear, you messed up. The best is that they may say whoops, our fault and make things right.

Certainly worth a try to show them some physical proof rather than just debating the question wth them.

In any case, if that was the cause of the breakage, it sure seems to be Tremec's problem not Keisler's.

You are right, that pic from the other site sure does look like yours.

Theirs:


Yours:


Good luck!

Cheers!
Dave