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rear main seal

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Old 12-29-2014, 03:02 PM
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Year: 1990
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Engine: 4.0 renix
Default rear main seal

OK I've read and read and read. Tried it all as well and nothing is making this thing budge. The lower seal in the bearing cap basically was welded in. I had to basically cut it out. Now with this leak it did look like the main part was coming from the lower seal. So am I wrong for just doing the lower seal?
Old 12-29-2014, 03:30 PM
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It would have been best to do it all. The nice apart about a 2 piece rear main in not having to pull the Trans to replace it. That being said, did you verify your leak was from the seal? Common areas are the VC gasket and the oil filter adapter housing. These motors sit angled back so oil will mainly run to the back and down, causing what looks like a rear main leak.
Old 12-29-2014, 03:37 PM
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Yes I did it was clear as DAT where it was leaking from and like I said I had to carve the lower half out so we shall see
Old 12-31-2014, 07:27 AM
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Well did the seal still couldn't get the top out and the whole process sucked lol. Mainly cuz our hi was only like 13 degrees. But its done and thank god as far as now no more leaks
Old 12-31-2014, 07:47 AM
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I have never seen one stuck that badly.....................
I've done it on (3) different 4.0 Jeeps, and with the correct sized punch, the top comes right out?
The bottoms just peeled right out for me.
Yours might have got super hot at some point?

What kind of miles do you have on yours?
Old 12-31-2014, 06:28 PM
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I have 186 k and yea it was bad. I'll take it to a shop next time
Old 12-31-2014, 07:41 PM
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Mine was also just picked it out top came right out when crank was turned while I pushed...
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