'99 Expl rear differential leaking
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Joined: Dec 2002
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From: na
'99 Expl rear differential leaking
I've got a 1999 Explorer that has a rear differential leak. Gear oil looks to be spread around underneath quite a bit, not dripping from a single spot (i.e. differential cover seal). Its not a constant leak, and only seems to drip after parking the car. Been told this could point to a pinion seal problem (?), possibly leaking where the driveshaft meets the rear differential. I checked the differential plug, and to my dismay no oil on the pinky. Any other possibilities?
Anyone know what a pinion seal repair "should" run from a service center? Or is it a somewhat easy DIY task for an experienced-novice
Thanks for the input.
Anyone know what a pinion seal repair "should" run from a service center? Or is it a somewhat easy DIY task for an experienced-novice
Thanks for the input.
Senior User
Joined: Nov 2002
Posts: 128
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From: South East Chicago
'99 Expl rear differential leaking
most times you can buy a speedy sleeve.... its like a shim that takes up the space around the shaft, i would call around to a general mechanic shop or even a place that deals with driveshafts and rear ends ... try to get a second or third opinion ... it helps to shop around dont be afraid to ask questions .. and stay away from pep boys.
Des
Des
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Joined: Jul 2002
Posts: 54
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'99 Expl rear differential leaking
Don't drag your feet on the repair.
I had a slight pinion leak on my 86 Bronco. I didn't think much of it since it was only a small puddle each time I parked it. What you may not realize is that it is leaking a greater amount while the driveshaft is spinning. You will run low on differential oil and cause excessive wear of differential gears and possible failure.
The job is not that hard. 4 Torx head screws holding the u-joint bearing caps and 1 big, tough pinion nut. It's 2 hours work and a $15 part. The secret to the job is to properly preload the pinion bearing by setting the correct torque on the pinion nut.
My 95 EB Exp had a leaking front differential pinion. The dealer replaced it but did not set the torque properly. This led to the premature failure of the pinon bearing, pinion gear/shaft, and required a new ring and pinion set ($1000).
Remember, proper preload.
I had a slight pinion leak on my 86 Bronco. I didn't think much of it since it was only a small puddle each time I parked it. What you may not realize is that it is leaking a greater amount while the driveshaft is spinning. You will run low on differential oil and cause excessive wear of differential gears and possible failure.
The job is not that hard. 4 Torx head screws holding the u-joint bearing caps and 1 big, tough pinion nut. It's 2 hours work and a $15 part. The secret to the job is to properly preload the pinion bearing by setting the correct torque on the pinion nut.
My 95 EB Exp had a leaking front differential pinion. The dealer replaced it but did not set the torque properly. This led to the premature failure of the pinon bearing, pinion gear/shaft, and required a new ring and pinion set ($1000).
Remember, proper preload.
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pablocruz69
1997 - 2006 Expedition & Navigator
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May 20, 2012 04:09 PM
2004, 99, cover, differental, differential, end, explorer, ford, front, housing, leak, leaking, maintenance, mountaineer, rear
