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Transmission rebuild

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  #21  
Old 03-04-2020, 11:40 AM
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Originally Posted by kawan
I can ... but the 2008 unit has nice clean fluid whereas my valve body had a few metal pieces form the drum/steel/frictions grinding. So i figured the 2008 mechtronics is probably in better shape. My unit is probably the safe way to go except if someone can confirm that the 2008 mechtronics can work without programming.

for the fill, in the previous posts in this thread, the transmission was prefilled before putting the pan cover back on. Makes life easier. So i was wondering how much they filled it with assuming they used a metal pan.

I would use your original Mechatronic’s unit. I have been told that a used unit can be programmed, but never tried. Without programming it def won’t work.

For the bench pre fill, I would look up the dry fill capacity and fill to that amount.

start vehicle on level surface, then open fill plug and see how much comes out.

From my experience the metal pan holds approx .3 quart less(an educated guess) so whatever the overfill amount is will spill out. Just like if you were filling in the vehicle running.

good luck
 
  #22  
Old 03-04-2020, 11:45 AM
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This is the gasket you want to use, Fel-pro brand:





 
  #23  
Old 03-04-2020, 12:55 PM
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Got it. Thanks.
 
  #24  
Old 03-05-2020, 09:30 AM
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Originally Posted by abran
This is the gasket you want to use, Fel-pro brand:


Is this better than what comes in the AB kit? I just did the conversion and have a slow leak coming from the backside. No amount of tightening is helping it out.
 
  #25  
Old 03-05-2020, 09:55 AM
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Did you torque to spec? Trans gaskets usually fail like oil pan gaskets, over tightening which deforms the metal pan, causes it to bow a little between bolts and leak. That can sometimes mean a new pan is needed.
 
  #26  
Old 03-05-2020, 10:54 AM
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Originally Posted by gervin23
Is this better than what comes in the AB kit? I just did the conversion and have a slow leak coming from the backside. No amount of tightening is helping it out.
yes, AB kit gaskets suck. I stopped using that style. Torque to spec, under torque, or over torque they always seem to leak.

this one is a metal gasket with rubber over mold. Impossible to over torque and supposedly reusable.
 
  #27  
Old 03-05-2020, 11:41 AM
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Originally Posted by DakotaTravler
Did you torque to spec? Trans gaskets usually fail like oil pan gaskets, over tightening which deforms the metal pan, causes it to bow a little between bolts and leak. That can sometimes mean a new pan is needed.
I didn't torque to spec but definitely didn't over torque as I'm paranoid about stripping the aluminum. A couple bolts on the back where it was leaking seemed to keep backing out over time so I'd lightly tighten back up. I eventually added lock washers but leaking continued.

Originally Posted by abran
yes, AB kit gaskets suck. I stopped using that style. Torque to spec, under torque, or over torque they always seem to leak.

this one is a metal gasket with rubber over mold. Impossible to over torque and supposedly reusable.
Thank you! I'll definitely replace it with this gasket.
 
  #28  
Old 03-05-2020, 05:25 PM
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I suppose the shorter bolts that come with the the metal pan blot will suffice when using this gasket? The gasket provided in the kit was like a paper gasket ( much thinner) .. which I will discard and use the Felpro TOS-18753 instead.

Thanks again.
 
  #29  
Old 03-06-2020, 12:17 PM
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Photos:





 
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  #30  
Old 03-06-2020, 12:18 PM
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Yes, supplied bolts work.
 


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