Leaking rear diff
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Cargo Master
Joined: Sep 2007
Posts: 3,049
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Leaking rear diff
Last week or so my wife noticed a few drops of oil on the driveway. I thought it was that mystery oil leak from the engine, but I noticed the oil stains and a drop of oil on the rear diff when I left work on Friday. It appears to be the pinion seal since the oil is running down the front side of the diff. I plan on replacing it and my questions for the group are: Could it be something else? Is this hard to change? Should I be looking to replace anything else while I'm in there?
Post Fiend
Joined: May 2006
Posts: 10,007
Likes: 4
From: Central Florida
Give the pinion a wiggle test, you shouldn't be able to deflect it much at all. If it does have some slop, the bearings maybe on their way out. If you catch it soon enough, the bearings are usually fine. However if it runs dry, your looking at a rebuild half of the time.
Elder User
Joined: Sep 2007
Posts: 563
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From: Llano and Huntsville, TX
this is the same reason why my truck is going in the shop this week.. i think it is the pinion seal thats bad but no telling till the truck is on the lift and taken apart..
all i know is i have differential fluid leaking from the front and being slung in a 360 degree pattern but the pumpkin is still full of fluid.. so i'll see what the total bill is later this week.
all i know is i have differential fluid leaking from the front and being slung in a 360 degree pattern but the pumpkin is still full of fluid.. so i'll see what the total bill is later this week.
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Cargo Master
Joined: Sep 2007
Posts: 3,049
Likes: 1
Yoke? Excuse the ignorance, but I'm not sure what you're referring to here.
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rrawlins
1967 - 1972 F-100 & Larger F-Series Trucks
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Oct 5, 2003 09:00 AM
