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Wal
Dodge Dakota
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9/27/2004
16:37:20
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 Subject: axle tube leak confusion
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Message:
Hi -
I have a 99 with the 8.25" rear. I have a leak where the axle tube meets the pumpkin on the driver's side. One shop told me that it was a big job and the tube had to come out and new seal driven in... etc. Then I talked to the shop guy at my local Napa and he told me that there are no seals and that there must be some kind of unknown crack or leak and I should just have a welder put a bead around where the tube meets the pumpkin to stop the leak.
What's the skinny on this?
Thanks :-)
Oh, also I have a groan coming from back there now. It is usually after a highway drive and then my first turn from a stop sign when I get off. I have LTD slip rear and I noticed it after adding some Lucas friction modifier to my rear gear lube. I plan on flushing it out and re-filling. I hope nothing bad happened :(
Wal
Wal
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Dr. D
Dodge Dakota
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9/27/2004
20:05:10
| RE: axle tube leak confusion
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Message:
You cannot weld the carrier housing to the tube, The housing is
cast iron and the tube is steel.
I have seen this problem only once and we solved it by cleaning
the area well and applying a two part paste called PC-7 (it
hardens like steel).
We applied it like a bead of caulk and then painted the area with
flat black paint.
Note : you must do this while the axle is drained and clean.
(make the area rough with emery cloth or sandpaper)
Dr. D
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Wal
Dodge Dakota
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9/27/2004
20:28:03
| RE: axle tube leak confusion
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Message:
thanks, Doc. I tried cleaning and roughing it and using a bead of black RTV a few months ago but it didn't work.
Looks like it's time for something stronger. Any idea why it's leaking there? I forgot to mention that I also checked my vent and it is working properly.
TNX!
Wal
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Dr. D
Dodge Dakota
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9/28/2004
06:32:49
| RE: axle tube leak confusion
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Message:
More than likely .... Surface imperfections between the two
parts.
Dr. D
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Wal
Dodge Dakota
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9/28/2004
10:44:56
| RE: axle tube leak confusion
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Message:
thanks Doc!
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Kowalski
GenIII
9/28/2004
16:01:30
|  RE: axle tube leak confusion
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Message:
Cast iron CAN be welded, the trick is to heat it up with a torch first.
Lead, follow, or get out of the way
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Dr. D
Dodge Dakota
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9/28/2004
17:37:26
| RE: axle tube leak confusion
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Message:
It can (and usually does) weaken the cast.
Dr. D
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Jag
Dodge Dakota
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9/28/2004
20:55:44
| RE:
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Message:
Heat weakens CAST considerably. Makes the metal for brittle. Some Napa stores carry CAST iron welding rods. They will work with any good welder.
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01Motorsport
Dodge Dakota
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9/28/2004
21:45:28
| RE: axle tube leak confusion
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Message:
It sounds like the rear end pinion seal is leaking. I had my local Dodge dealer do the repair, and rear fluid change, for about $200.
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