u-joint leaking oil - Ford Powerstroke Diesel Forum
 
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post #1 of 7 Old 01-20-2014, 08:01 AM Thread Starter
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u-joint leaking oil

The u-joint where my drive shaft connects to me rear differential box is leaking oil, any idea of what is making it? Only after the engine is warmed up does it leak. Check the oil and it is within range. started happening about 2 weeks ago with random oil stains on the driveway but today I saw it dripping down the rear differential box and followed it to the u-joint and drive shaft connection. My rig is a 2006 F250 2WD rear wheel. I run Rotella T Triple Protection. Hope this helps and thanks for all advice.
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post #2 of 7 Old 01-20-2014, 08:06 AM
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If the leak is where the yoke enters the rear differential, that is a pinion seal leak.
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post #3 of 7 Old 01-20-2014, 08:09 AM
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Does it look like this? (pic only to show location. Not a Ford axle)
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post #4 of 7 Old 01-20-2014, 08:12 AM Thread Starter
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Yeah thats exactly what it looks like, although it is a trickly of oil down the differential box.
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post #5 of 7 Old 01-20-2014, 08:26 AM
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Like I said, that is a Pinion seal.
Unless you are comfortable setting gear clearances, bring it to a shop.
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post #6 of 7 Old 01-20-2014, 08:58 AM Thread Starter
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is it a 10.50 ring gear or 11.25?
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post #7 of 7 Old 01-20-2014, 08:59 AM
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10.50 ring gear

Last edited by NYC F-350; 01-20-2014 at 08:59 AM. Reason: bad typing!
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