Thread: Rear main seal problem

OK so I got my rear main seal from Greg V and checked thepart number and it it the correct main seal according to his websites part number. But when I went to put it in the damn thing doesnt sit flush like my old rear main seal does. This one sit "in" on the piece that holds the seal in place if you know what i mean. Is it supposed to sit flush or is it supposed to sit in kinda?? Anyone ran this seal before?

THe part number is 12279-AD205. Im guessing this is a revised Rear main seal since my other 2 rear main seals I have here are a different part number and both sit flush. Anyone???

Pics would help,but....do you mean you can push the seal in past flush with the case?(like axle seals will do if you put them in too far)

If so,you just press it in till it is flush(and even)....I usually use the old seal if it is not destroyed,to tap it in with a hammer.Same as axle seals ,if you have replaced them.The FSM will also back this up.I just did one recently,and it was also thin enough that it would go past flush...
My guess is that they were made thinner to make them easier to remove when replacing.If you removed the old one,you know what I mean.
Jay

AHHH HAAAA are you referring to my rear main seal that went slightly past than the factory one was????? well so far so good... NO leaks

^yup....lol

For rear mains I don't F**K around. I go OEM all the way to the finish line cause I know they work for 300,000 miles

we are talking about OEM,I thought

mine went in a little more then flush with the housing too. (OEM nissan). It is fine so far (3000 miles or so) As long as the inner lips seal against the crank you will have no problems. How far in or out it is shouldn't matter much because the rear cover has those stops so it can't go in all the way. Just make sure it is at least flush.

I just wound up using the old one since it was off my DET that I pretty much just bought. Its in good Condition. I just greased it back up and ran with it.

I tried to make the new one sit flush after puting it in all the way to where it sat in a lil bit and wound up ruining it. So....who knows. But if some of you are running them like that then I guess its ok.

It tokk me 5 seconds to take my rear main seal out of the housing in my DE. So I cant seem that being the reason why they made it thinner. But who knows

OMG you reused one...doh
I would never do that,but hey if it is working,I cant knock it,I guess.
I am guesing you took off the housing to get the old seal out...
I was referring to removing the old one without removing the housing,and with the motor still in the car.You have to pry it out and usually gets destroyed.By making it thier,it prys out easier.

I had three rear main seals and two seal housings. One was off of my DE one was off of My DET and KNOWN to be good. And the other was brand new with no housing. I figured Since I was in there I would replace the seal anyway. But I wound up having to use the known good one off of my DET. My DET ws honestly so clean when I opend it up the first time that honestly im not really worried about reusing that seal.

I see what you saying though. The way I do it is I remove the housing when I do mine. All it is is 4 bolts. Then you just take the two studs out of the housing that go through the upper oil pan and slide it out. Then reseal it and replace the studs with new ones.