How to replace the Rear Main Seal

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How to replace the Rear Main Seal

Discussing How to replace the Rear Main Seal in the 5.0 Mustangs Forum. How do i replace the rear main seal and how do I take the old ...

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January 3rd, 2007, 01:47 AM	#1
shawn91stang Regular Join Date: Dec 2006 Posts: 82	How to replace the Rear Main Seal How do i replace the rear main seal and how do I take the old one out? Do I have to use the special installer tool? Can I do it with the engine and tranny in the car? What kind of seal should I buy to stop this from happining for a longgg time.

January 3rd, 2007, 07:07 PM	#2
SALIV8 Enthusiast Join Date: Dec 2006 Location: Lookin' at you in my rearview Posts: 516	hey. pretty big job, but here goes- you have to remove the trans. you have to remove the flywheel or clutch, the rear plate. when the seal is exposed, thread three or four screws into the seal itself and pull it out evenly across the screws and be gentle enough not to scratch the crank seal surface. clean it out very good, lube the outer face of the seal and innerface, and tap the seal back in with a socket of that size. its a pain in the ass, me and my buddy replaced his awhile ago. hope it helps

January 3rd, 2007, 11:11 PM	#3
shawn91stang Regular Join Date: Dec 2006 Posts: 82	with the 3 or 4 screws how do you place them and how does it pull out and are they so skinny that the only thing it hits is the gasket? By the way thanks for the reply

January 4th, 2007, 07:18 PM

SALIV8

Enthusiast

Join Date: Dec 2006

Location: Lookin' at you in my rearview

Posts: 516

Originally Posted by shawn91stang

with the 3 or 4 screws how do you place them and how does it pull out and are they so skinny that the only thing it hits is the gasket? By the way thanks for the reply

First see exactly where the seal is sitting now.
Use small sheet metal screws with apoint. Punch the holes in the seal with an punch then thread the screws in the holes. Between the bore and block/oil pan and be careful not to scratch anything. U only want the screws in the seal. not touching anything else. after u pull the old seal out, check all surfaces for nicks, etc. clean them too. oil on the outside of new seal and grease inside. I'm not sure which grease to use, maybe oil would work too. press it back in, and press it in squarely. hope it helps

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