New(er)TSB for rear axle vent leak?? - Ford Mustang Forum
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post #1 of 17 (permalink) Old 06-26-2014 Thread Starter
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New(er)TSB for rear axle vent leak??

I thought I recently read that there is a new tsb for the rear axle vent leak but I can't find it now (not that bulb looking thing). I think it's a rubber line that goes from the vent on the axle tube to the diff.

While looking under my car today (I have 2500 miles), I see that I have the leak just as my '12 did. Has anyone had this new tsb performed and did it work? I remember that my old one leaked after the older bulb type looking thing tsb was performed.

I'm gonna bring it in in about three weeks when I get home from a trip and would like to know what I'm talking about when I do. I know it's normal for the most part but I don't want gear oil all over my axle tube and diff and I don't want to risk running low on gear oil. I did see on the older tsb that if the diff is not dripping, they are instructed to not proceed. Mine is not dripping.

Thanks.


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post #2 of 17 (permalink) Old 06-26-2014
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I saw on another forum that Ford's "new" solution to the leaky axle vent is P/N: DR3Z-4022-A KIT HOSE ASSY

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post #3 of 17 (permalink) Old 06-26-2014 Thread Starter
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New(er)TSB for rear axle vent leak??

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Originally Posted by Kirk Clyman View Post
I saw on another forum that Ford's "new" solution to the leaky axle vent is P/N: DR3Z-4022-A KIT HOSE ASSY

That is exactly what I was talking about. Thanks!



I guess I would just worry about how close it gets to the exhaust.


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post #4 of 17 (permalink) Old 06-26-2014
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Not the cheapest but the best solution to this problem, IMO, is to get a finned diff cover (Boss 302, Ford Racing, etc) and move the vent cap to the cover. Plug hole in axle and your done.

I think most of the aftermarket covers have a boss drilled and tapped in them for a vent.
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post #5 of 17 (permalink) Old 06-27-2014
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Quote:
Originally Posted by stevegt2012 View Post
Not the cheapest but the best solution to this problem, IMO, is to get a finned diff cover (Boss 302, Ford Racing, etc) and move the vent cap to the cover. Plug hole in axle and your done.

I think most of the aftermarket covers have a boss drilled and tapped in them for a vent.
This is what I did but of course I did it initially because I wanted the aluminum finned cover. At first I didn't have the vent in the diff cover but after it started leaking on the axle tube, I moved it to the top of the cover and used a plug in the axle tube. So far no more leaks.

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post #6 of 17 (permalink) Old 06-27-2014 Thread Starter
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New(er)TSB for rear axle vent leak??

I guess I'll add the diff cover to my list of future mods, and an inexpensive one at that for $144.95. Thanks guys!


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post #7 of 17 (permalink) Old 06-27-2014
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I tried the new part. I tore off in one track day due to my car being lowered. The exhaust just saws away at the rubber tube until it splits. I've just gone back to the old style vent and top off my diff after track weekends. Also, if you buy a vent get an extra just in case.

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post #8 of 17 (permalink) Old 06-27-2014
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THERE IS ABSOLUTELY NO REASON ANYBODY SHOULD HAVE TO PAY MORE THAN $100 FOR THAT COVER.

You can order that finned differential cover from Tousley or Levittown for less than $60. It is the exact same cover that comes on the Boss 302 and Track Pack cars and sold under the Ford Racing brand for at least twice that much, if not more. Mine came with the magnetic fill and drain plugs in it.

It's a bit tricky to filter down to it but you want piece 7 and the listed price is $58.43.

http://www.levittownfordsupercenter....pair-parts.php

Any time I find a Ford Racing part I might be interested in for my car I always try to see if I can get it cheaper using the OEM repair sites. Sometimes it's a lot cheaper, sometimes it's not. But there are some steals out there if you can find them. This is one of them.

As mentioned, there is a spot on the top of the cover for the axle vent. Just plug the axle tube and move the vent to the top of the cover and it's a done deal.
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post #9 of 17 (permalink) Old 06-27-2014 Thread Starter
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Quote:
Originally Posted by SHOSKER View Post
I tried the new part. I tore off in one track day due to my car being lowered. The exhaust just saws away at the rubber tube until it splits. I've just gone back to the old style vent and top off my diff after track weekends. Also, if you buy a vent get an extra just in case.

Well, so much for that. Haha


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post #10 of 17 (permalink) Old 06-27-2014 Thread Starter
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New(er)TSB for rear axle vent leak??

Quote:
Originally Posted by Blazin72 View Post
THERE IS ABSOLUTELY NO REASON ANYBODY SHOULD HAVE TO PAY MORE THAN $100 FOR THAT COVER.

You can order that finned differential cover from Tousley or Levittown for less than $60. It is the exact same cover that comes on the Boss 302 and Track Pack cars and sold under the Ford Racing brand for at least twice that much, if not more. Mine came with the magnetic fill and drain plugs in it.

It's a bit tricky to filter down to it but you want piece 7 and the listed price is $58.43.

http://www.levittownfordsupercenter....pair-parts.php

Any time I find a Ford Racing part I might be interested in for my car I always try to see if I can get it cheaper using the OEM repair sites. Sometimes it's a lot cheaper, sometimes it's not. But there are some steals out there if you can find them. This is one of them.

As mentioned, there is a spot on the top of the cover for the axle vent. Just plug the axle tube and move the vent to the top of the cover and it's a done deal.

Awesome! Thanks for the info. I'm glad I didn't order it for $145!! The link doesn't take me to any parts, so I'm gonna click around and see if I can find it.


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post #11 of 17 (permalink) Old 06-27-2014 Thread Starter
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New(er)TSB for rear axle vent leak??

Quote:
Originally Posted by Blazin72 View Post
THERE IS ABSOLUTELY NO REASON ANYBODY SHOULD HAVE TO PAY MORE THAN $100 FOR THAT COVER.

You can order that finned differential cover from Tousley or Levittown for less than $60. It is the exact same cover that comes on the Boss 302 and Track Pack cars and sold under the Ford Racing brand for at least twice that much, if not more. Mine came with the magnetic fill and drain plugs in it.

It's a bit tricky to filter down to it but you want piece 7 and the listed price is $58.43.

http://www.levittownfordsupercenter....pair-parts.php

Any time I find a Ford Racing part I might be interested in for my car I always try to see if I can get it cheaper using the OEM repair sites. Sometimes it's a lot cheaper, sometimes it's not. But there are some steals out there if you can find them. This is one of them.

As mentioned, there is a spot on the top of the cover for the axle vent. Just plug the axle tube and move the vent to the top of the cover and it's a done deal.
It would be part #2, for the Boss or GT500 in this screenshot, right? I don't think having the ford racing logo is worth an extra $90 for this part. Haha




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Looks like it. I filtered down through to a slightly different diagram under a 2013 Boss 302 and it was piece 7.
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post #13 of 17 (permalink) Old 06-27-2014 Thread Starter
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Quote:
Originally Posted by Blazin72 View Post
Looks like it. I filtered down through to a slightly different diagram under a 2013 Boss 302 and it was piece 7.

Cool. What would I plug the axle tube with? And from your earlier post, would I be correct in assuming the vent hole is just capped in the boss cover rather than me having to drill the hole out?


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Quote:
Originally Posted by daustin View Post
Cool. What would I plug the axle tube with? And from your earlier post, would I be correct in assuming the vent hole is just capped in the boss cover rather than me having to drill the hole out?
No drilling required. Just remove the vent from the axle tube and install it in the top of the cover.

Plugging the old vent hole in the axle is kind of up to you. It is not pipe threaded so I just took the vent with me to a parts store and found a brass fitting with the same thread on one end and a female 1/8" pipe thread. I put thread sealer on the fitting and screwed into the axle tube then put thread sealer on the 1/8" pipe plug and screwed it into the fitting. That's all I was able to come up with, you might find something different that works for you.
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post #15 of 17 (permalink) Old 06-27-2014 Thread Starter
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Quote:
Originally Posted by Blazin72 View Post
No drilling required. Just remove the vent from the axle tube and install it in the top of the cover.

Plugging the old vent hole in the axle is kind of up to you. It is not pipe threaded so I just took the vent with me to a parts store and found a brass fitting with the same thread on one end and a female 1/8" pipe thread. I put thread sealer on the fitting and screwed into the axle tube then put thread sealer on the 1/8" pipe plug and screwed it into the fitting. That's all I was able to come up with, you might find something different that works for you.

Easy enough. Thanks for your help!


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