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Leak at Rear CV -Transaxle connection
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Abscate Premium Member
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PostPosted: Tue Apr 06, 2021 3:10 am    Post subject: Re: Leak at Rear CV -Transaxle connection Reply with quote

ZsZ wrote:
New aftermarket rubber parts are crap nowadays. Sometimes OE too.
I don't know why.


Good rubber formulation is expensive and is where cheap parts makers cut the corners. The market is stupid enough to think that someone can make a $100 part for $15 because they are on eBay and have some magic angle.
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MarkWard
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PostPosted: Tue Apr 06, 2021 4:32 am    Post subject: Re: Leak at Rear CV -Transaxle connection Reply with quote

We have an owner running all 4 Tiguan boots. I wanted to see for myself. So far so good. Tiguan and the vanagon have 100 mm cvs. The Tiguan likely has an outer boot similar in design to your front outer boot. Thatís why it specifies inner only for the Tiguan. At least I think that.
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ZsZ
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PostPosted: Tue Apr 06, 2021 5:02 am    Post subject: Re: Leak at Rear CV -Transaxle connection Reply with quote

Abscate wrote:
ZsZ wrote:
New aftermarket rubber parts are crap nowadays. Sometimes OE too.
I don't know why.


Good rubber formulation is expensive and is where cheap parts makers cut the corners. The market is stupid enough to think that someone can make a $100 part for $15 because they are on eBay and have some magic angle.


But big brands with expensive parts like Lobro and Lemforder also has crap rubber.
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markf1
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PostPosted: Tue Apr 06, 2021 5:21 am    Post subject: Re: Leak at Rear CV -Transaxle connection Reply with quote

OK. Planning to get:

https://www.vancafe.com/211501331B-p/211501331b.htm
And
https://www.fcpeuro.com/products/audi-vw-cv-joint-boot-rear-inner-vag-1k0498201

Remaining questions:

1) The axles are new EMPI from GoWesty with @1k miles on them, should I be considering / are there better axels from different manufacturer?

2) Can anyone specify the seal I need to fix the leak at the transaxle and where I might be able to order it and get it shipped overnight?

Continued gratitude for all of your help!
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PostPosted: Tue Apr 06, 2021 5:37 am    Post subject: Re: Leak at Rear CV -Transaxle connection Reply with quote

markf1 wrote:


1) The axles are new EMPI from GoWesty with @1k miles on them, should I be considering / are there better axels from different manufacturer?


Axles almost never need to be replaced unless they somehow get damaged. The CVs are removed from the stock VW axle and new ones put on. If you have the original axles just reuse those. If not then you can use the EMPI axles but I'd prefer used VW to EMPI if I had a choice.
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markf1
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PostPosted: Tue Apr 06, 2021 5:45 am    Post subject: Re: Leak at Rear CV -Transaxle connection Reply with quote

Thanks Dave O. Unfortunately the shop in Grand Junction that put the new axles on threw away the originals that they took off.

I guess we will stick with the EMPI. However if here are any compelling reasons to use better VW OE then now would be the time to do that.
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PostPosted: Tue Apr 06, 2021 5:59 am    Post subject: Re: Leak at Rear CV -Transaxle connection Reply with quote

Weddle has the seal and O ring. If itís the seal, you donít need the O ring. To replace the O ring, you need to unscrew the side cover and that requires a tool and some attention to detail. It sets backlash and bearing preload. In general, the O ring shouldnít leak. It should have been renewed when the trans was done. That said, I had a new O ring split. More of that good rubber. The tool is not necessary, but something can be fabricated. Lots of clever tools on the Samba.

You also need to pay attention to the cv flange where the lip seal rides. If there is a groove, it will likely leak again. There is a thread for the speedi-sleeve repair.
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PostPosted: Tue Apr 06, 2021 6:00 am    Post subject: Re: Leak at Rear CV -Transaxle connection Reply with quote

If your guy is removing the empi joints, have him accurately measure the axle lengths.
There are different lengths, it would be good to know what you have on there.

There have been instances where off brand axle splines didn't mate with lobro joints,

There is a source for quality axles but I don't have a name or link. I think they focus on Porsche performance.

Dave
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PostPosted: Tue Apr 06, 2021 6:53 am    Post subject: Re: Leak at Rear CV -Transaxle connection Reply with quote

The super helpful info keeps coming from you samba folks.

Dave - I will me tion that to the mechanic.

Mark Ward - Do you happen to know the name of the seal and o ring from Weddle? I am having a hard time finding it on their site.

Thanks!
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PostPosted: Tue Apr 06, 2021 7:27 am    Post subject: Re: Leak at Rear CV -Transaxle connection Reply with quote

Just talked with Greg aka Mr. GAS who did the transaxle rebuild. He seemed very confident that getting a speedy sleeve National Part #99177 was all that was needed to fix the transaxle leak.

He said that it was very common to have the drivers side leak at that location, which is what we have. He also said he puts speedy sleeves on all his rebuilds now. (not sure why he did not put them on ours?)
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PostPosted: Tue Apr 06, 2021 7:54 am    Post subject: Re: Leak at Rear CV -Transaxle connection Reply with quote

yet more info.

Just spoke with a very helpful and knowledgeable guy at van cafe. the cv joints I linked to :
https://www.vancafe.com/211501331B-p/211501331b.htm

Those are NOT the ones most recommended for syncro who might offroad.

Instead the Lobro 944 are recommended. He is not sure they have them in stock and only available as a kit with boots that need to be thrown away.

https://www.vancafe.com/94433190100-p/94433190100.htm
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PostPosted: Tue Apr 06, 2021 9:21 am    Post subject: Re: Leak at Rear CV -Transaxle connection Reply with quote

Iím watching your dollar-O-meter spinning like an electric meter during a heat wave in August!!

Dave
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PostPosted: Tue Apr 06, 2021 9:25 am    Post subject: Re: Leak at Rear CV -Transaxle connection Reply with quote

So - Shop cannot fit the new cvs and etc work into their schedule until later in May.

The leak is real slow and small. I cleaned it all off and we will drive to Durango (110 miles) to have the originally scheduled work done later this week. We'll see how much transaxle fluid leaks out along the way.

Mr. GAS thinks it's very unlikely that this would suddenly develop into a big leak such that we burn up the transaxle. (That would be of course unimaginably horrific at this point.) He thinks we are fine to go on a trip 600 miles estimate and get the work done later when the shop can work us in to their schedule.

Meanwhile I have just ordered these parts. It seems like the whole world is on back order for parts of all kinds so I wanted to get them now before they become back ordered.

Here is what I ordered. If anyone can double check that I got this right it would be much appreciated.

https://www.fcpeuro.com/products/audi-vw-cv-joint-boot-rear-inner-vag-1k0498201

https://www.fcpeuro.com/products/porsche-cv-joint-gkn-94433190100

Thanks!
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Last edited by markf1 on Tue Apr 06, 2021 9:29 am; edited 1 time in total
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PostPosted: Tue Apr 06, 2021 9:28 am    Post subject: Re: Leak at Rear CV -Transaxle connection Reply with quote

djkeev wrote:
Iím watching your dollar-O-meter spinning like an electric meter during a heat wave in August!!

Dave


You understand it perfectly and we appreciate that you "know our pain".

Thanks for all of your valuable help and expertise!
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PostPosted: Tue Apr 06, 2021 9:47 am    Post subject: Re: Leak at Rear CV -Transaxle connection Reply with quote

That leak is an annoyance leak and will be fine. Its when it stops leaking you need to be concerned. Wink

There is a cap that will likely be destroyed when the CV drive flange is removed. Part number is 002 517 289A. It needs to be removed to access the circlip that holds the flange to the transaxle.
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PostPosted: Tue Apr 06, 2021 10:03 am    Post subject: Re: Leak at Rear CV -Transaxle connection Reply with quote

Thanks Mark Ward. I guess I need 2 of those caps? 1 for each side inner joints.

I have a concern that the cv joints may not fit on the (new) EMPI axles we have on the van. No way to tell in advance and ordering kits with new axles sends an already very pricey situation into a much higher orbit. So..... gonna keep my fingers crossed and try not to worry too much about in advance (not my specialty)
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PostPosted: Tue Apr 06, 2021 10:15 am    Post subject: Re: Leak at Rear CV -Transaxle connection Reply with quote

Years ago, I ordered new complete CV shafts from Pelican parts. They were advertised as "New". What showed up were poorly reman'd cv shafts with some aftermarket reman joints. They took them back and complete refund.

Empi has been around since JC Whitney. In other words a long time. I imagine they are originally using stock spline joints. I don't see why they would come up with a proprietary spline, but you never know. I imagine its a safe bet for you that your joints will fit the splines you have.


As far as 944 vs VW thing, vs vanagon, It makes no sense that the 944 CV would be better in a lifted application. The working angles of a 944 are quite a bit less than a stock vanagon or vw thing. But, the internet says these are preferable.

2 plug caps one for each side.
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PostPosted: Tue Apr 06, 2021 11:26 am    Post subject: Re: Leak at Rear CV -Transaxle connection Reply with quote

markf1 wrote:


The leak is real slow and small. I cleaned it all off and we will drive to Durango (110 miles) to have the originally scheduled work done later this week. We'll see how much transaxle fluid leaks out along the way.


Hi Mark, I have the same leak on my rebuilt Syncro trans, it's not quite as pronounced as yours but it's on my list to repair it with a Speedy Sleeve. Hell, it's been on my list for two years or so. Very Happy

Image may have been reduced in size. Click image to view fullscreen.


Like MarkWard said, it's an annoyance leak so don't sweat it too much.
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PostPosted: Tue Apr 06, 2021 11:45 am    Post subject: Re: Leak at Rear CV -Transaxle connection Reply with quote

thank you joetiger. helps me keep it in a realistic perspective.
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