rear end leaking? - F150online Forums


rear end leaking?

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  #1  
Old 12-27-2010, 05:57 PM
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rear end leaking?

My rear end pumpkin looks like it is leaking fluid in some places yet when you touch it it is a black dust substance and not liquid or wet. what is this?
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Old 12-27-2010, 07:23 PM
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im having this same problem only i noticed two tiny drips on the small floor this morning. i'm taking it in tomorrow. if i find out what it is i'll let ya know man
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Old 12-27-2010, 07:24 PM
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i am not dripping or leaking any fluid.
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Old 12-27-2010, 07:53 PM
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i wasnt either for about 3 months so i blew it off, but now its leaking. but if you don't want the info i wont waste my time..
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Old 12-27-2010, 07:54 PM
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no please post.
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Old 12-27-2010, 08:00 PM
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It could be the rear pinion seal. Anyone else have any ideas?
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Old 12-27-2010, 10:49 PM
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how many miles are on it
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Old 12-27-2010, 10:49 PM
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I have 47000 on my truck
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Old 12-27-2010, 10:57 PM
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I read a plugged vent line could cause the seal to blow, i will check.

is this a common problem?
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Old 12-28-2010, 12:15 PM
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Quote:
Originally Posted by wreedKR View Post
I read a plugged vent line could cause the seal to blow, i will check.

is this a common problem?
It can be, basically if the vent tube clogs, it builds up pressure and can force the oil out around the seals. Something has to give.
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Old 12-28-2010, 02:48 PM
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That happened to me...my vent tube got clogged and it blew out my axle seals and pinion seals...
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Old 12-28-2010, 06:21 PM
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OK I think my vent is clogged, When i blow into the tube it comes right back out with a Poof. The vent hooks to a block which appears to have the brake lines running thru it, if I remove the vent nipple it will not mess up the brakes, correct?
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Old 12-29-2010, 08:52 PM
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mine was the seal where the drive line meets the rear end housing
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Old 12-29-2010, 11:27 PM
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Quote:
Originally Posted by wreedKR View Post
OK I think my vent is clogged, When i blow into the tube it comes right back out with a Poof. The vent hooks to a block which appears to have the brake lines running thru it, if I remove the vent nipple it will not mess up the brakes, correct?
The rear vent tube should have no correlation to the brake lines. You should be able to clean the vent line without affecting the breaks.

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mine was the seal where the drive line meets the rear end housing
That is the pinion seal.
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Old 12-29-2010, 11:32 PM
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yeah that's what he called it. haha and i meant drive 'shaft' not line. i'm going to pick it up tomorrow as well as install my leveling kit since hes a real good buddy of mine he's gunna let me use one of his lifts to install it. we shall see if it fixes it. i also had a hose going to one of my smaller intercoolers leak at the clamp, plus were going to go ahead and change the fuel pump as it's just starting to go bad we think. first time it's been in the shop and it's an 04. not to bad i dont think.
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