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Old 01-22-2012, 07:30 PM
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lo/reverse piston probelm

90 700r4. i installed a new lo/reverse piston, new ones part number is 8685550 and the old one was 8663888. with the new one installed when clutches and steels and center support and snap ring are installed. go to air check the park reverse hole with minamal psi. and it has the slightist bubbling around the big outer seal on the piston i tryed the old piston and tryed puting the new piston in another case and even new seals. is this normal. possable that too much assebly grease preventing it from sealing 100%? i mean it still holds pressure but it just has a slow leak around random parts of the seal? any suggestion?

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Old 01-23-2012, 09:34 PM
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Quote:
Originally Posted by redlinekink99
90 700r4. i installed a new lo/reverse piston, new ones part number is 8685550 and the old one was 8663888. with the new one installed when clutches and steels and center support and snap ring are installed. go to air check the park reverse hole with minamal psi. and it has the slightist bubbling around the big outer seal on the piston i tryed the old piston and tryed puting the new piston in another case and even new seals. is this normal. possable that too much assebly grease preventing it from sealing 100%? i mean it still holds pressure but it just has a slow leak around random parts of the seal? any suggestion?
Not uncommon for minor air leaks... You may have scuffed the rubber seal slightly or the sealing surface of the aluminum has minor scuff marks

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Old 01-26-2012, 12:01 AM
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Originally Posted by Crosley
Not uncommon for minor air leaks... You may have scuffed the rubber seal slightly or the sealing surface of the aluminum has minor scuff marks


ok. so i might be able to get away with the slight leakage ur sayin? and another thing, this case does have over 200k miles on it. maybe its just worn. be i think im just gunna try a new set of seals and see what happens, i also use the spring compressor to help push the piston in place, maybe thats not a good idea but it seems no harm. any recommendations on seal brands?
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