Front Pinion Seal Leak after replacement | Ford Explorer - Ford Ranger Forums - Serious Explorations
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Front Pinion Seal Leak after replacement

rc1626

Active Member
Joined
January 31, 2002
Messages
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City, State
Long Island, N.Y.
Year, Model & Trim Level
99 Explorer XLT
I just replaced my front pinion seal on my 99 Explorer 4WD as the old one was leaking. After replacement all looked good for about a day until it started leaking again. Replaced it a second time and it is still leaking. I don't think it is leaking when the truck sits but more so when the truck is moving and the gear oil is being sloshed around.

I was recently reading up on some threads on the board and some mentioned about setting bearing preload. I don't know if incorrect preload would cause a leak or not. It seems more like it would probably have more to do with premature bearing failure. So looking for feedback please. Any ideas on why I may be experiencing this reoccurring pinion seal leak? And how does one set bearing preload?

Any and all help appreciated.

Thanks.
Rob
 



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waskly

Explorer Addict
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August 21, 2010
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Crooklyn NY!
does the yolk / flange have a worn in grove from the old pinion seal ring?

might need a new yolk/flange.
 












rc1626

Active Member
Joined
January 31, 2002
Messages
51
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1
City, State
Long Island, N.Y.
Year, Model & Trim Level
99 Explorer XLT
Thank you for the replies. I will certainly check the yolk flange the next time it is apart. Where is the vent tube if I might ask?

Thank you again.
Rob
 






storlied

Explorer Addict
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June 20, 2007
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City, State
Anchorage, Alaska
Year, Model & Trim Level
98 5.0L V8 AWD XLT
On the top of the diff in a spot you can't reach unless your magic.
 






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