Tranny breakdown

[chistoso]

Well, Looks like I'm screwed and gonna need a new tranny. On my way home from work today I noticed problems shifting from 1st to 2nd, pulled over and noticed a fluid leak right about where the servo is. I called up a friend, he picked up a jack and came down. We jacked it up and noticed the servo cover had popped off but after removing the heat shield and taking a closer view I noticed the housing where the retaining ring for the servo locks in was cracked causing the ring to snap off along with the servo cap.

WTH!! I don't think there is a fix for this other than a new tranny. I wonder if they can just replace the tranny case.

Looks like this one is toast. Time for a new one.

Suggestions? Advice?

 

[Rivieraracing]

Did you do the corvette servo on your tranny?

 

[chistoso]

yeah. I think that may have been the culprit.

---------- Post added at 07:44 PM ---------- Previous post was at 07:42 PM ----------

A local shop wants $700 to replace the case. Transfering all the internals considering everything alse is in good shape. The truck only has 73k miles on it.

 

[andrewmoore13]

damn that sucks. install error or just freak accident? makes me concerned about doing it on mine...

 

[chistoso]

I'm wondering how if I should just go out and get a new tranny depending on the cost compared to just replacing the case. What should I expect to pay for a new tranny?

---------- Post added at 08:40 PM ---------- Previous post was at 08:38 PM ----------

Or should I just have the guy go thru this one and just upgrade the internals as he's moving everything over to the new case?

 

[My01yuk]

yeah. I think that may have been the culprit.

I hope not because i had a servo put on mine by a tranny shop, and don't need to have any tranny issue right now. Just had to pay $2600 for a rebuilt tranny on my wifes Honda Odyssey.

Besides, I thought the servo's were supposed to help the tranny not hurt them. I'm confused.

 

[chistoso]

Looks like I'm just gonna go ahead and have a rebuild done on it with upgraded parts. $1595 with a 2yr/24k warranty. Might as well since it's gonna have to come off and be done with it.

I don't understand why the housing would crack but oh well, it's not like I'm hitting it with 500hp or anything.

 

[Jay]

That's the dark side of the servo mod... if you do not get the metal retaining ring FULLY seated in the groove in the servo bore it will take out the case. If you happen to have the piece that broke off (unlikely I know), you can take it to an experienced welder and have them TIG the piece back on along with a little support bracing welded onto the back of that.

Once i get the servo and ring in the housing, i take flat head screw driver and rubber mallet and carefully rap on the ring in 5 or so places around it to make sure it's snapped in there good. Never had a problem. Just don't beat on it hard since there is an aluminum case you're dealing with.

Looks like you will need a new case otherwise.

Do the usual good mods while you're in there: .490" sonnax boost valve, 8-friction Borg Warner high energy 3-4 clutch pack set to .030" clearance (factory spec is too loose), oversize band w/ reinforced anchor (get a new reverse input drum, they're cheap), Borg Warner 29 element sprag, metal accumulator pistons in the forward and 1-2 accumulators (block the 4th accumulator behind the VB plate), new separator plate with torlon check balls, and if you do a transgo kit (i prefer the sonnax kit FWIW) set the accumulators on the softest setting... you are already drilling the feed/bleed holes for fluid volume and pressure to the apply pistons so leave the accumulators to lessen the shock. Stay with either the corvette or sonnax 2nd servo, don't use the flat billet servos they're too rough on the 4L60e's brittle innards. The sonnax 4th servo would be a good idea too.

 

[My01yuk]

Thanks Jay, I feel confident that it was done right because I had a tranny shop put it on for me. Doesn't meant that it was but there's a better chance that they put it on right as oppossed to me doing it right.

 

[yukondoit]

Thanks Jay. You sure know alot about transmissions. I'll use your info as a referance in the future if anything happens to mine. SOrry to hear chistoso... but at least your getting it rebuilt with some goods.