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> CV joint / inner flange question, Is there a gasket or something that should go between?
mmichalik
post Oct 31 2017, 11:55 AM
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Hello Gentlemen,

I have a question about the inner cv joint to flange connection.

As you can see in the picture, (part #29) there's a gasket between the outer cv joint and the stub axle but, I have not found anything saying there should be something similar on the inner side.

On my e10, there's a metal, circular cap / insert that covers the inner and outer ends of the cv joints so the grease does not come out.

What is used to keep the grease from leaking out between the flange and the inner cv joint?. The bolts alone do not seem like they would make an adequate seal between the two.

Please let me know when you have a moment.

Thanks,

Mike


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mgphoto
post Oct 31 2017, 12:15 PM
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#25 is the cap that fits over the cv, most of the cap, I believe is metal to metal contact. The open section of the cv and axle protrude though the hole in the cap which is covered by the rubber bellows.
I believe newer versions have the bellows attached to the cap without the clamp and replaced as a unit, VW part.
No gasket on that side. Gasket on the other side needs to be installed carefully, correct torque and even pressure.
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Mikey914
post Oct 31 2017, 12:26 PM
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Now that I look at it more, good question


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TheCabinetmaker
post Oct 31 2017, 12:27 PM
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The answer is yes. Paper gasket on both cv's
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Mikey914
post Oct 31 2017, 12:33 PM
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Interesting, I would agree with cabnetmaker, but not drawn that way. If it leaks on one side it would leak on the other. The only real difference I can see is there is less room on the flange side so more could accumulate easier. I'll have to dig back into these again.
Mark
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mmichalik
post Oct 31 2017, 12:37 PM
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Thanks for the responses guys.

Can I assume that it's the same paper gasket? And if that is the case, I need a total of four instead of just two? (to take care of both left and right axles)

Just for reference, these are new axles / cv joints going in for the first time. When I pulled the transmission, there was no gasket between the inner flange/cv joint but, there sure was a lot of grease every where so, that's why I'm asking this question.
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Dr Evil
post Oct 31 2017, 12:53 PM
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Those gaskets are easily gotten from most vendors, and yes there were 4. However, I have changed to no gasket installed and to putting RTV along the seam after cleaning it up. Never had an issue, and the bolts stay torqued. YMMV.
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mgphoto
post Oct 31 2017, 12:59 PM
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QUOTE(mmichalik @ Oct 31 2017, 11:37 AM) *

Thanks for the responses guys.

Can I assume that it's the same paper gasket? And if that is the case, I need a total of four instead of just two? (to take care of both left and right axles)

Just for reference, these are new axles / cv joints going in for the first time. When I pulled the transmission, there was no gasket between the inner flange/cv joint but, there sure was a lot of grease every where so, that's why I'm asking this question.


Transmission flanges and axle flanges use the same gasket.

Yes 4 total gaskets. New axles with new cv's and bellows?

ps: make sure you use new lock washers on the flange bolts.
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mmichalik
post Oct 31 2017, 01:03 PM
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Well all new as in newly rebuilt from a vendor. (IMG:style_emoticons/default/smile.gif) I've rebuilt my e10 axles several times but, I wanted to start with new ones and if I ever need to have them rebuilt down the road, I'll do them myself.

I was just thinking about the washers as well. because there weren't any when I pulled them off so, I was going to replace a couple of the bolts that have started to round out a bit and all of the washers.
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Mikey914
post Oct 31 2017, 01:14 PM
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QUOTE(Dr Evil @ Oct 31 2017, 11:53 AM) *

Those gaskets are easily gotten from most vendors, and yes there were 4. However, I have changed to no gasket installed and to putting RTV along the seam after cleaning it up. Never had an issue, and the bolts stay torqued. YMMV.

I do also have the cv bolts drilled for safety wire as well as the wire if needed.
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mmichalik
post Oct 31 2017, 01:24 PM
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QUOTE(Mikey914 @ Oct 31 2017, 12:14 PM) *

QUOTE(Dr Evil @ Oct 31 2017, 11:53 AM) *

Those gaskets are easily gotten from most vendors, and yes there were 4. However, I have changed to no gasket installed and to putting RTV along the seam after cleaning it up. Never had an issue, and the bolts stay torqued. YMMV.

I do also have the cv bolts drilled for safety wire as well as the wire if needed.


Thanks guys, for the advice here.

Mark, I'll look into grabbing a few of the bolts from you with the safety wire in about a week.

Mike
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Andyrew
post Oct 31 2017, 01:29 PM
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Never used them and I never will.

I much prefer to go metal to metal and run the CV bolts in with an impact and then mark the bolts for future inspection. I've never had grease come out of a CV flange either.

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ChrisFoley
post Oct 31 2017, 01:35 PM
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I've always used the gaskets, never used drilled bolts, always torque to 33 lb-ft, never had one come loose.
I've tried RTV and don't like it at all for that application.
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Dr Evil
post Nov 1 2017, 08:21 AM
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As you can see, several intelligent, experienced people with differing approaches (IMG:style_emoticons/default/smile.gif) I also use safety wire, its cheap and easy insurance. I have had them come loose on several cars, always when I used the paper gasket, which is mooshy, always tq correctly. Never had an issue with metal to metal.
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ChrisFoley
post Nov 1 2017, 08:58 AM
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QUOTE(Dr Evil @ Nov 1 2017, 10:21 AM) *

Never had an issue with metal to metal.

When the gaskets are installed properly the metal to metal contact is maintained.
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Dr Evil
post Nov 1 2017, 09:18 AM
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QUOTE(Racer Chris @ Nov 1 2017, 10:58 AM) *

QUOTE(Dr Evil @ Nov 1 2017, 10:21 AM) *

Never had an issue with metal to metal.

When the gaskets are installed properly the metal to metal contact is maintained.

Maybe I had a shitty run of bad gaskets over several years and cars, but tq to spec didn't seem to hold. Over tq was not very good either. Gaskets bulged out. Do you know of differences in gaskets?
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mgphoto
post Nov 1 2017, 09:22 AM
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QUOTE(Dr Evil @ Nov 1 2017, 08:18 AM) *

QUOTE(Racer Chris @ Nov 1 2017, 10:58 AM) *

QUOTE(Dr Evil @ Nov 1 2017, 10:21 AM) *

Never had an issue with metal to metal.

When the gaskets are installed properly the metal to metal contact is maintained.

Maybe I had a shitty run of bad gaskets over several years and cars, but tq to spec didn't seem to hold. Over tq was not very good either. Gaskets bulged out. Do you know of differences in gaskets?


Printed side toward flange?
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mmichalik
post Nov 1 2017, 09:46 AM
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This is actually a great thread for any of the newer members, if you think about it. As Dr. Evil had mentioned, very experienced people with different approaches to the solution. Awesome debate / collaboration / discussion / examples.

Thanks for all the advice here guys. I've got a pretty good idea of how I will move forward with this.

Very cool.
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Dr Evil
post Nov 1 2017, 10:26 AM
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QUOTE(mgphoto @ Nov 1 2017, 11:22 AM) *

QUOTE(Dr Evil @ Nov 1 2017, 08:18 AM) *

QUOTE(Racer Chris @ Nov 1 2017, 10:58 AM) *

QUOTE(Dr Evil @ Nov 1 2017, 10:21 AM) *

Never had an issue with metal to metal.

When the gaskets are installed properly the metal to metal contact is maintained.

Maybe I had a shitty run of bad gaskets over several years and cars, but tq to spec didn't seem to hold. Over tq was not very good either. Gaskets bulged out. Do you know of differences in gaskets?


Printed side toward flange?

Not all have printed side. Interesting point. Not sure it would matter, though. If so, its news to me.
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whitetwinturbo
post Nov 1 2017, 08:13 PM
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