Help with trans issue

Discuss VW transaxles and transmissions. Gearheads wanted!

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Richierich
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Joined: Fri Jan 06, 2017 7:41 pm

Help with trans issue

Post by Richierich » Mon Jan 09, 2017 5:07 pm

Hi all - I have a KCR Super Street Plus transmission (Swingaxle) in my Oval and when pulling the motor recently the input shaft came out. The trans only has about 250 miles on it and cant really go back to KCR as I'm in the UK. My question is, to get in to have a look and hopefully repair the issue (the issue which i believe is the threaded stud between the input and main shafts) do i remove the passenger side cover? Once thats removed does the superdiff just come out easy enough or is this best left to the pro's?

Dougy Dee
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Re: Help with trans issue

Post by Dougy Dee » Mon Jan 09, 2017 5:54 pm

The diff shouldn't have to come out.
Occasionally the input shaft coupler fouls the diff and can't slide back far enough to allow install of the 7mm stud. Then the ring gear side would need backing off.

Richierich
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Re: Help with trans issue

Post by Richierich » Mon Jan 09, 2017 5:58 pm

So if i remove the passenger side cover i should be able to have room to get in? Is there a chance of doing this with the trans in the car?

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sideshow
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Re: Help with trans issue

Post by sideshow » Mon Jan 09, 2017 8:00 pm

You will have to define what you consider "passenger side"
But I would try the starter side plate first and while I have never tried that in car it might work if one can clean the frame horn.
Yeah some may call it overkill, but you can't have too much overkill.

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Marc
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Re: Help with trans issue

Post by Marc » Mon Jan 09, 2017 9:27 pm


Richierich
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Re: Help with trans issue

Post by Richierich » Tue Jan 10, 2017 1:10 pm

sideshow wrote:You will have to define what you consider "passenger side"
But I would try the starter side plate first and while I have never tried that in car it might work if one can clean the frame horn.
Sorry, yep i meant passenger side on a left hand drive car so the starter side.

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Pablo2
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Re: Help with trans issue

Post by Pablo2 » Fri Jan 13, 2017 12:29 pm

Your joining stud has self-threaded. There are a number of causes for this, but only one for-certain cure.

http://www.thesamba.com/vw/forum/viewtopic.php?t=557933
http://www.thesamba.com/vw/forum/viewtopic.php?t=568339
http://www.thesamba.com/vw/forum/viewto ... ?p=6866970
http://www.thesamba.com/vw/forum/viewtopic.php?t=530289
http://www.thesamba.com/vw/forum/viewtopic.php?t=546488
http://www.thesamba.com/vw/forum/viewtopic.php?t=539881
http://www.thesamba.com/vw/forum/viewtopic.php?t=549819
http://www.thesamba.com/vw/forum/viewtopic.php?t=541494 ?
http://www.thesamba.com/vw/forum/viewtopic.php?t=385776 ?

The old joining stud should be replaced with the newer version:
http://images.thesamba.com/vw/gallery/pix/1068484.jpg

Do NOT screw the two shafts tightly together. You must back off 2-3 splines before sliding the joining sleeve into place. If you fail to do this, you may end up with a snapped mainshaft. You WANT a sloppy feeling input shaft. This is how the quill shaft design is supposed to feel.
aka Pablo, gears, Geary
9.36 @ 146 in '86

Richierich
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Re: Help with trans issue

Post by Richierich » Fri Jan 13, 2017 2:04 pm

Pablo - thanks for the links - I have already looked through those. I've never removed a diff before - I'm assuming it comes out as one allowing access to the shaft?

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