Diff fluid leaking onto passenger wheel?

OneStiffGT

New Member
Jan 18, 2006
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Canada
The other day I was washing the car and I spotted a leak on my wheels, first I thought it was break fluid then I realised it is diff fluid.

What does this mean? It is leaking jsut iinside the wheel? I've got 31 spline moser axles if it makes any difference.
Axle Seals?
 
unless you are running independent rear suspension your axle bearings are lubed by the rear diff. fluid, not grease. Unless the bearing is moving on the axle(it is pressed fit) or you have a groove worn in the axle from the seal then axle should be ok and seal replacement should fix it.
 
You need a new axle seal - it's not a difficult install.

1) remove diff cover draining fluid

2) remove pinion cross shaft (small bolt and slide shaft out)

3) remove U-clip ("c" clip) from axle by pushing axle in and sliding clip out

4) remove axle from rear end (pull)

5) use slide hammer w/ attachment to pull out axle seal

6) use seal driver to install new seal

7) go backwards and re-install everything, don't forget to put new fluid and friction modifier in! :nice:
 
I'm fighting them on it and I need some proof. I have the Ford Workshop Manual and it says nothing about extra fluid. Just the fill to 1/4-9/16" below the fill hole. That is where the service manager is claiming 4 quarts.
 
You need a new axle seal - it's not a difficult install.

1) remove diff cover draining fluid

2) remove pinion cross shaft (small bolt and slide shaft out)

3) remove U-clip ("c" clip) from axle by pushing axle in and sliding clip out

4) remove axle from rear end (pull)

5) use slide hammer w/ attachment to pull out axle seal

6) use seal driver to install new seal

7) go backwards and re-install everything, don't forget to put new fluid and friction modifier in! :nice:

one other step to add. If you have ABS, remove the abs sensor on that side, otherwise you can't push the axle in far enough to remove the c-clip.
 
The Haynes manual says 3.75 pints, which is almost 2qts. Not even two full qts!!
If they used 4 qts, thats why it is leaking out!!

I have my rear end bench rebuilt recently and it was throwing fluid out of the breather because they over filled it. If you can get your car level on jack stands, pull the drain plug and see what comes out. If fluid comes out it may just be over filled. If not then it provably is the axle seal.

Did they already do the service on the car ?
 
one other step to add. If you have ABS, remove the abs sensor on that side, otherwise you can't push the axle in far enough to remove the c-clip.

Good point! Also, when removing the sensor always remember to ROTATE it to get it out of the hole, and when putting it back in do NOT over tighten it or the plastic will crack, very easily.

That's TOTAL BS that it takes 4qts! You should only have like 1.78qt in there or something. The axle tubes don't need "filled", its one continuous cavity (the center section and axle tubes).
 
Good point! Also, when removing the sensor always remember to ROTATE it to get it out of the hole, and when putting it back in do NOT over tighten it or the plastic will crack, very easily.

That's TOTAL BS that it takes 4qts! You should only have like 1.78qt in there or something. The axle tubes don't need "filled", its one continuous cavity (the center section and axle tubes).

Some idiot saw 3.76 pints or whatever it says, and didn't realize that was not the same thing as "quarts". I'd suspect simple error rather than a ripoff, as it is too easy to verify the correct amount and they then come up looking like thieves...
 
Here is what the service manager is claiming.

"we did axle seals in your vehicle. This means we have to fill the center section and the axle tubes. The axle bearings are lubricated by the gear oil. The entire axle housing was empty due to the fact the axle seals had to be replaced. The amount of fluid charged is the amount used."

4 quarts my ass. I am now trying to get a hold of someone higher than him at the dealership.