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Vanapplebomb
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Joined: November 03, 2010
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Location: Yooper Land Michigan
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 Posted: Tue Mar 06, 2012 4:56 pm Post subject: Need help with drive flange replacement |
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Alright, so today I pulled off the stock type 1 drive flanges off my transmission. I have aftermarket flanges for 100mm cv joints that I want to put in.
Here is the problem. The type 1 flanges have a square lip machined into the back of them on which a thin wavy sheet metal disk was press fitted on that covers the inner transmission seal. I popped that metal disk off to see what was up.
My aftermarket flanges have a radius which obviously does not hold the sheet metal disk.
What do I do? Do I just insert the aftermarket flanges, pop on the retaining c-clip, and tap in the drive flange center cover seal? Or...do I have to do something with that metal disk?
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Berrien 295
http://www.thesamba.com/vw/forum/viewtopic.php?t=487021 |
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Vanapplebomb
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Location: Yooper Land Michigan
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mcmscott
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Joined: March 12, 2010
Posts: 1264
Location: sanger ca
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| Posted: Tue Mar 06, 2012 5:21 pm Post subject: |
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| You do not use the disk, and in an offroad car you also do not use the rubber coated disk(cap) |
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Vanapplebomb
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Location: Yooper Land Michigan
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mcmscott
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Joined: March 12, 2010
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Location: sanger ca
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| Posted: Tue Mar 06, 2012 6:54 pm Post subject: |
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| In an offroad car the axle will hit the cap, knocking a hole in it, leaking oil out. Seal the flange to the stub axle with silicone, then after snapring is in fill the cavity (where the cap used to go) with silicone, let it harden all the way. |
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mark tucker
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Joined: April 08, 2009
Posts: 8509
Location: SHALIMAR ,FLORIDA
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| Posted: Tue Mar 06, 2012 8:48 pm Post subject: |
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| hmm never heard that one,better clean it all real good with breakleen,but keep it off the seal.I do know th cr axles are "floating"to an extent. |
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jsturtlebuggy
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Joined: August 24, 2005
Posts: 2074
Location: Fair Oaks/Orangevale, CA
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| Posted: Tue Mar 06, 2012 10:10 pm Post subject: |
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Yes replacing the stock flange cap with silicone works great with aftermarket axles that float.
Years ago when they came out with flange caps made of urethane I tried them. Taking the axles out to inspect CV's on the race car the caps were gone. Had been ground up inside the CV joints.
After that started using the silicone and have never had a problem with leaking.
Floating axle will hit the cups at times and you need to use a 3 corner file on axle splines to get CV's off.
SwayAway did start rounding the end of the axles which helps with less filing. Other axles that have square edge can be rounded off some.
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Joseph
Fair Oaks/Orangevale, CA
Elrod Racing
Motion Tire Motorsports
Having fun with Dune Buggies since 1970
Into Volkswagens since 1960
Manx Across America, coming in October 2013 |
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mcmscott
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Location: sanger ca
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| Posted: Wed Mar 07, 2012 8:53 am Post subject: |
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| jsturtlebuggy wrote: |
Yes replacing the stock flange cap with silicone works great with aftermarket axles that float.
Years ago when they came out with flange caps made of urethane I tried them. Taking the axles out to inspect CV's on the race car the caps were gone. Had been ground up inside the CV joints.
After that started using the silicone and have never had a problem with leaking.
Floating axle will hit the cups at times and you need to use a 3 corner file on axle splines to get CV's off.
SwayAway did start rounding the end of the axles which helps with less filing. Other axles that have square edge can be rounded off some. |
I fill that entire area up, that way when the axle hits it, it does not damage the end of the axle. Also I use ultra grey as it seems to be firmer when cured |
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Vanapplebomb
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Joined: November 03, 2010
Posts: 1120
Location: Yooper Land Michigan
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| Posted: Wed Mar 07, 2012 8:57 am Post subject: |
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Thank you guys for all the replies.
So, what if I am not using axles that float in the cv joints? can I still use the it, or will they still bang into the cap?
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Berrien 295
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mcmscott
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Posts: 1264
Location: sanger ca
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| Posted: Wed Mar 07, 2012 9:07 am Post subject: |
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| In a TRUE offroad situation, even stock axles will hit the caps. There is nothing wrong with sealing flanges with rtv, even in a stock application, other than appearence. And after the axle is on you can,t see it anyway.I build more class 11 trans than probably anyone and they are all like that. |
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Vanapplebomb
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Dougy Dee
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Joined: August 21, 2004
Posts: 667
Location: Niagara Region, CANADA
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| Posted: Wed Mar 07, 2012 10:01 am Post subject: |
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Permatex has a Gear Oil RTV out. It is a drier, more viscous compound that the gear oil doesn't attack like the regular, pick your colour, RTV's.
P/N 31872
My local FLAPS was able to locate it after I called Permatex direct to confirm it was available in Canada. I'm sure it's available in US as well... |
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mcmscott
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Joined: March 12, 2010
Posts: 1264
Location: sanger ca
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| Posted: Wed Mar 07, 2012 11:27 am Post subject: |
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| When I worked for Ford we used the grey on all diff covers with no gasket, if it's good enough for all the factories on gear oil apps then it's good enough for me. Also I have been doing it this way since 02 when I started my business with 0 problems on probably 500 to 1000 trans. However good tip to know |
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