replace rear main seal

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May 12, 2004 | 09:15 PM

weldingfreak

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Tuned

Joined: Feb 2004

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From: Missouri

replace rear main seal

The truck in my sig rear main seal is leaking and I was wandering if it can be fixed w/o pulling the engine

May 13, 2004 | 08:25 PM

bremen242

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Joined: Jan 2002

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From: GANS

I think you have to drop the plan for your 460. I think it would probably be easier to pull the motor if you have the equipment.

May 14, 2004 | 01:42 AM

yukon_bluenose

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Joined: May 2004

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From: Dawson City, Yukon Terr,Canada

it depends, whether or not its a 1/2 piece gasket( full/half)moon shaped seal. if it is a 2 piece you 're in luck . drop the oil pan and break loose the 3 bach crank shaft bolts you may have to go 1 more. Pul or pry out the old seal clean thouroughly and install newseal. reinstall crank bolts starting closest tro front of engine to rear . Make sure crank bolts are TOURQUED TO SPECand that main bearings did NOT MOVEAT ALL........YUKON_BLUENOSE

May 14, 2004 | 07:02 AM

Clifford II

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Joined: May 2003

Posts: 167

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From: Omaha, NE

I just recently had my truck's rear main seal replaced (86 F250 460).

I didn't want to mess with it so I had a shop do it. The shop told me
that Ford started using one piece seals in 86, up till then it was a rope
seal.

Before I took the truck in, they told me that they would have to drop
the tranny, but they ended up having to pull the motor.

They did a great job, cleaned up the engine while it was out and replaced
a couple of broken exhaust manifold bolts and even replaced the exhaust
manifold gaskets while the engine was out.

Hope this helps!
Scott

May 14, 2004 | 02:27 PM

weldingfreak

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Tuned

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From: Missouri

Thanks guys and yes I dop have some exaust issues that I need to deal with so it will be easer to pull the motor

May 15, 2004 | 12:02 AM

F 2fifter with a 4 sixter

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Joined: Dec 2003

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what a pain though having to pull an engine or pull the transmisison out all for a stupid rubber seal just my 2 cents on that

May 15, 2004 | 12:10 PM

weldingfreak

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Tuned

Joined: Feb 2004

Posts: 330

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From: Missouri

It is the other little jobs like the exaust bolts that are broke off and the smog pump tube caps that fit in the rear of the heads. Yes could just replace the heads... which is an option. but which is better replace heads or pull engine?