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Volkswagen Rabbit, Jetta, Scirocco, Convertible: 1975-1984 (A1) 84.5 Scirocco: Outer CV boot replacement with axle on the car?


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Last Post: Sep 5, 2014 12:29 AM Last Post By: aardvaark
aardvaark

Posts: 54
Registered: 05/14/05
84.5 Scirocco: Outer CV boot replacement with axle on the car?
Posted: Aug 16, 2014 10:47 PM
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I want to change the boot on the passenger side outer CV joint, with the axle on the car and the inner CV joint still attached, as JoeBean described in his post here:

http://tech.bentleypublishers.com/thread.jspa?messageID=7727&#7727

To summarize the method: remove the bolts holding the strut flange to the hub, and possibly remove the outer tie rod end from the hub. Then pull the axle out while moving the hub out of the way.

JoeBean's method was for a Rabbit. Does anybody know if this will also work for a Scirocco?
tcovenant2000

Posts: 1,775
Registered: 12/09/03
Re: 84.5 Scirocco: Outer CV boot replacement with axle on the car?
Posted: Aug 18, 2014 5:12 PM   in response to: aardvaark in response to: aardvaark
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Should be just the same. I don't think there is a substantial diff. Both cars are made in Germany and both are Mach 1.
Thomas
aardvaark

Posts: 54
Registered: 05/14/05
Re: 84.5 Scirocco: Outer CV boot replacement with axle on the car?
Posted: Aug 18, 2014 10:32 PM   in response to: tcovenant2000 in response to: tcovenant2000
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Good to know. Although I don't get why the tie-rod possibly would need to be disconnected from the hub. I'm new to servicing this part of the car and still trying to get a clear grasp of the suspension geometry.

Another method I came across in research is to separate the ball joint from the hub. Or for 1984.5 and later (not sure what chassis # ), remove the front control arm pivot bolt and swivel the whole assembly back.

That one sounded easiest but sadly my Rocco has the olden style rear control arm pivot, which is not a vertical bolt pivot but a fat bushing held by a U clamp. It might 'give' a bit, but it's not made to outright swivel, as far as I can tell.

So apparently the choices involve maybe disconnecting the tie-rod, or for sure separating the ball joint. I'm nervous about doing either one, so it would be good to know in advance which method gives the most working room and access to the axle under the wheel well.
aardvaark

Posts: 54
Registered: 05/14/05
Re: 84.5 Scirocco: Outer CV boot replacement with axle on the car?
Posted: Sep 1, 2014 10:44 PM   in response to: aardvaark in response to: aardvaark
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Done! I can vouch it is possible to do without having to disconnect anything but the strut flange. By turning the wheel about 90% to the right (not to full stop) and pulling the hub out and left, there was just enough clearance to get the axle out of the hub.

To keep the inner CV from overextending during the axle manipulations, I attached a hose clamp to the axle near the inner boot and ran a couple pieces of wire under it, and then wired it to convenient attaching points on the transmission and frame, making it impossible to pull the axle shaft outward at all. Worry free. :)

Also, discovered yet more 1984.5 weirdness the inner CV joints are 94mm, not 90mm or 100mm, which every CV boot kit in the world (evidently) specifies for this car. I'm thinking the previous owner, or some shop, made an axle substitution at some point, because it does not appear that 94mm inner CV was ever standard on the Scirocco. The outer is correctly to spec at 81mm.
tcovenant2000

Posts: 1,775
Registered: 12/09/03
Re: 84.5 Scirocco: Outer CV boot replacement with axle on the car?
Posted: Sep 3, 2014 5:05 PM   in response to: aardvaark in response to: aardvaark
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'Roccos and 'vertables were made in Germany. In 1985, when everything else went to MKII, the German cars didn't. However, the german cars had a lot of MKII style changes starting in 1985. That's the official word. As a decades-long owner of a 'vertable, I can tell you that the unofficial word is there were many changes made in 1984 as they were apparently running out of parts.
Thomas
aardvaark

Posts: 54
Registered: 05/14/05
Re: 84.5 Scirocco: Outer CV boot replacement with axle on the car?
Posted: Sep 5, 2014 12:29 AM   in response to: tcovenant2000 in response to: tcovenant2000
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Figures ... das German mach-do.

Did some more research and there are and were (mostly were) boot kits sold for 94mm inner CV joints on various mid-80s A1 models including Scirocco. They are still available, exclusively it seems, from a few UK and Euro stores.

I love this car but at times I do wish there was less detective work involved.

Thanks Thomas.

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