front diff breather
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#6
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Technically, anytime you submerge the diffs above the breather line, you should be changing your fluid. At least that's what I've been told. It could be that its just been slowing seeping out here and there and you just finally noticed. Guess I don't know how often you check the underside out.
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#10
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If you have water in the diff, that definitely needs to be addressed but you don't need to have water in there to make the fluid leak out.
A leak form the front diff vent is a common problem on certain Rangers and Explorers and Ford issued a TSB for it a few years ago. The factory repair kit costs about $400 (!) and requires dropping the diff to install a baffled cover and rerouted hose.
Before you do anything like that, you might try a simpler fix. My 2003 FX4 Level II has the same differential housing vent as yours but has never leaked. The factory hose from the vent goes up higher than yours and is clipped to a bracket by the brakes lines that connect to the ABS pump.
Here's a guy who fixed his leaker by extending the vent hose:
http://www.therangerstation.com/foru...ad.php?t=39812
A leak form the front diff vent is a common problem on certain Rangers and Explorers and Ford issued a TSB for it a few years ago. The factory repair kit costs about $400 (!) and requires dropping the diff to install a baffled cover and rerouted hose.
Before you do anything like that, you might try a simpler fix. My 2003 FX4 Level II has the same differential housing vent as yours but has never leaked. The factory hose from the vent goes up higher than yours and is clipped to a bracket by the brakes lines that connect to the ABS pump.
Here's a guy who fixed his leaker by extending the vent hose:
http://www.therangerstation.com/foru...ad.php?t=39812
#13
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Use a suction pump and pump the bad fluid out. Other than that, I was able pull my front diff cover w/out dropping my diff out. Takes some manuvering, but can be done. The pain is putting it back on. I did have trouble w/ that one both when my truck was stock and now that it has superlift. Good luck
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