5R55E Transmission. Overdrive servo cover blowout!

[dpayne6960]

Hi
I'm so glad I found this forum! Maybe one of the readers can help me. I have a 2000 sport explorer that has pushed out the overdrive servo cover twice now. The first time the snap ring was broken in two. I then replaced the piston. O-ring and cover and cover O-ring. It lasated about a month. Now the same thing happened again. It seams like something very strong is pushing the cover out. Help?

 

[BrooklynBay]

Welcome to this forum! I've moved your thread into the transmission section, and merged your other thread with this one. Is there a problem with the case?

 

[dpayne6960]

5R55E Trans- Overdrive Servo Cover blowout

I have a 2000 explorer sport with a 5R55E transmission. About a month ago I had the overdrive Servo Cover blowout and had a complete loss of fluid. I replaced the servo. O-ring, cover and cover O-ring. It lasted only a month and today the same thing happened again. The servo cover is pushed out and ****ed the snap ring is damaged again and a little piece of the outer aluminum of the trans has been broken off like the pressure pushed so hard that the snap ring actually snapped a piece of the case off. I know I can replace the servo again and another ssnap ring but what's causing this?

 

[BrooklynBay]

You will need a new case. Everything has to be transferred over along with new parts.

 

[dpayne6960]

Thanks Brooklynbay. I think the case is fine. I guess I coud measure the ID of the bore and compare it to a known value if I had one. I'm just wondering what could be so strong as to push the cover out while breaking the snap ring in the process? The pressure that moves the servo is between the cover and the servo- right? If this is correct then maybe the pressure is too high somehow?

 

[dpayne6960]

Brooklynbay- only the tinest piece of the outer lip where the snap ring seats is missing. I'm talking 1/4" at most. There's plenty of meat left for the snap ring to seat in Sorry if I mislead you. Are you saying that there's something wrong with the case and that's why I'm having this problem (besides the small chp in the case)?

 

[BrooklynBay]

Maybe the groove is worn, and the snap ring doesn't seat completely into the groove?

 

[dpayne6960]

Thanks, I'll take a look over the weekend.