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4.0 OHV Rear Main Seal


e21pilot

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Back in the day, when I bought my first '92 Ranger new, the dealer had to replace the rear main seal in the 4.0 OHV V6 three times until it stopped leaking.

Now, I have newly acquired, used '92 Ranger and it too has a leaking rear main seal. I have having the transmission replaced and figured it is a good time to try and fix the rear main as well.

I wonder if there is any improved rear main product out there for the 4.0 OHV, or at least some advice on how to install a factory one to avoid the leaking?
 


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black_demon69

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get a crankshaft repair sleeve and the proper tool to install the seal..
 

gaz

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black:

That is just the installation tool correct?

Ford offers a repair kit that comes with a sleeve and a seal (p/n F5TZ-6701-A), but it costs about $50 at the dealership. Rebuilders should definitely install a sleeve over the factory seal surface, but there are better alternatives in the aftermarket; Micro Sleeve (800-475-3383) and Classic (800-393-0544) both offer sleeves for the 4.0L cranks (from TRS Tech pages).
 

black_demon69

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