Rear diff smell ??
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Elder User
Joined: Jun 2006
Posts: 613
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From: Connecticut
Rear diff smell ??
I had a leak a few months back(maybe 5 months ago).I replaced the pinion(which was leaking) and i also replaced both axle seals.Now i have no leak,but when the rear diff gets hot,it smells like axle fluid every time i get out of the truck.
Did i overfill it?
Is the smell just coming out of the vent?
Did i overfill it?
Is the smell just coming out of the vent?
Lead Driver
Joined: Sep 2003
Posts: 5,844
Likes: 6
From: Albuquerque
If you suspect an over filled diff, then you should check it after a run...when the axle is at operating temp. Just remove that fill plug while on level surface. At least you can eliminate that...
Do you have a LS diff? Did you add the proper amount of friction modifier?
Good luck...
biz
Do you have a LS diff? Did you add the proper amount of friction modifier?
Good luck...
biz
Lead Driver
Joined: Sep 2003
Posts: 5,844
Likes: 6
From: Albuquerque
Originally Posted by sglynx1
There is no such thing as overfilling the diff.... once it's full, gear lube will pour out of the filling hole. It's impossible to keep pumping oil in there. So... unless there's a leak, no problem!
However, if the diff is being filled on an incline (ie: home driveway) where the fill hole is facing up towards the incline, then it is possible to add more than the recommended amount of fluid. Not by much...but still more than recommended. Just something to consider...
That is why it is so important to find a level area to check the fluid level.
biz
Thread Starter
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Elder User
Joined: Jun 2006
Posts: 613
Likes: 0
From: Connecticut
Originally Posted by biz4two
If you suspect an over filled diff, then you should check it after a run...when the axle is at operating temp. Just remove that fill plug while on level surface. At least you can eliminate that...
Do you have a LS diff? Did you add the proper amount of friction modifier?
Good luck...
biz
Do you have a LS diff? Did you add the proper amount of friction modifier?
Good luck...
biz
Yes i do have LS and i added the modifier to fords specs,well alittle less.Wanted the clutches to grab more.
Originally Posted by ReAX
Did you spill any gear oil where you park? Did you spill any on the diff while filling/replacing seals?
I had a 9" go on me, where the gear oil got on the ground stunk for weeks.
I had a 9" go on me, where the gear oil got on the ground stunk for weeks.
It smells like it anywhere i go, and i know i cleaned the wheels and tires really good with brake cleaner.
Originally Posted by sglynx1
There is no such thing as overfilling the diff.... once it's full, gear lube will pour out of the filling hole. It's impossible to keep pumping oil in there. So... unless there's a leak, no problem!
Thanks for the response.
Thread Starter
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Elder User
Joined: Jun 2006
Posts: 613
Likes: 0
From: Connecticut
Originally Posted by biz4two
That is almost true.
However, if the diff is being filled on an incline (ie: home driveway) where the fill hole is facing up towards the incline, then it is possible to add more than the recommended amount of fluid. Not by much...but still more than recommended. Just something to consider...
That is why it is so important to find a level area to check the fluid level.
biz
However, if the diff is being filled on an incline (ie: home driveway) where the fill hole is facing up towards the incline, then it is possible to add more than the recommended amount of fluid. Not by much...but still more than recommended. Just something to consider...
That is why it is so important to find a level area to check the fluid level.
biz
It was on a little bit of an incline,but not much tho.Ill have to check it.Just weird that it smells now and not before i changed the seals.
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