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-   -   4L60e Servo Cover Seal (http://www.hotrodders.com/forum/4l60e-servo-cover-seal-152809.html)

123pugsy 02-06-2009 10:42 AM

4L60e Servo Cover Seal
 
I am wondering what would cause the servo cover seal to blow out on a freshly built 1997 4l60e tranny.
It was working fine when installed and then blew out 2 days later.

Thanks,
Pugsy

Crosley 02-06-2009 07:51 PM

I am guessing here; the cover snap ring blew out too?

Often the cause is the snap ring was not seated properly by the builder OR there was dirt - debris or corrosion in the snap ring groove that did not allow the snap ring to seat properly.

I have also seen the aluminum edge of the servo area break away and allow the cover to come loose.

123pugsy 02-07-2009 04:46 AM

So, do you think RTV should be used rather than assembly lube on initial install?

I was told the snap ring was still in place.

Crosley 02-07-2009 07:32 AM

Quote:

Originally Posted by 123pugsy
So, do you think RTV should be used rather than assembly lube on initial install?

I was told the snap ring was still in place.


Never use RTV there, it is useless with the pressure on the servo cover.

I have never seen a snap ring in place when a cover blows off the 2-4 servo cover. I'd replace the cover and snap ring.

Although..... TransGo used to offer in his kits a thinner snap ring to allow the servo cover to move out slightly to increase band clearance. In my opinion That was a bad Idea from TransGo and that perhaps is the problem here?

:cool:

123pugsy 02-07-2009 04:16 PM

Thanks Crosley.

I'm gonna go check it out tommorow.

Pugsy

123pugsy 02-08-2009 08:23 PM

The top tranny line had one of those interesting slide in with a wiggly clip thingy. It was loose and leaking down making it appear that it was coming from the servo seal.

All is good.

:thumbup:


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