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Old 12-09-2007, 04:51 AM   #1
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Thumbs down Replace rear main seal in an 87 258 I6

I have been a lurker here for a while and decided to register.

My question is ,,,how difficult is it to replace the rear main seal on my 87 wrangler? It has the 258 engine.




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Old 12-10-2007, 11:51 AM   #2
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Depends on how much you like being on your back looking up. You have to drop the oil pan and pry the old one out, clean everything up and then install the new 2 piece seal from inside the rear and outside the rear. Most likely you will need a way to drive it in without mangling it.

Personally, I think that is why they invented lifts and mechanics!

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Old 12-12-2007, 06:43 PM   #3
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Quote:
Originally Posted by Grandpa Jeeper View Post
Depends on how much you like being on your back looking up. You have to drop the oil pan and pry the old one out, clean everything up and then install the new 2 piece seal from inside the rear and outside the rear. Most likely you will need a way to drive it in without mangling it.

Personally, I think that is why they invented lifts and mechanics!
and "loan" offices at the bank!!! If you can do it yourself, do it...
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Old 12-12-2007, 09:08 PM   #4
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i'd pull the engine... but thats just me. i hate working under a car by light of a ciggerette. its a messy job even when the engine is pulled much less still in the car. the seals mating surface must be as clean and dry as a babys ass so when your draining ALL the fluids from the engine (that will take forever still in the car) you will wait and wait and wait for the trickle to stop so you can clean and dry the area to begin the j0b of resealing... i have no idea what the rear main cap looks like for that motor. if its a one or two piece type but youll probably need some liquid gasket to "caulk" the corners in before putting in the rubber "gasket" and for that if there is one trace of oil or grease your seal WILL FAIL and you will have to start all over again. and you wont know you screwed up until you put everything back together again fill it and test it. so i say, pull the engine and do it right.
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