Date: Fri, 25 Jul 2008 13:13:27 -0700
Reply-To: Mark Drillock <drillock@EARTHLINK.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Mark Drillock <drillock@EARTHLINK.NET>
Subject: Re: [Syncro] HELP - Pilot bearing marked up my input shaft
In-Reply-To: <033601c8ee89$b16cb1c0$6401a8c0@PROSPERITY>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
That basic procedure works with 2 spider gear Vanagon diffs but the
recessed hole you speak off is not there on 4 spider gear Vanagon
diffs(like Syncros...)
For those I think you have to mark the exact position of the left side
adjusting ring and then loosen it a few turns so the diff assembly can
be moved over slightly. Then the sleeve can slide out enough to uncover
the mated ends of the 2 shafts and the shaft will then unscrew. The diff
adjustment is critical so the adjusting ring must go back exactly where
it was. You called the sleeve a collar/gear but only the early
transmissions have a gear on the sleeve, for reverse. 80-83 aircooled
and 82 diesel 4 speeds have the gear teeth on the sleeve (as well as the
recess in the diff). Later models have no gear teeth there and may not
have the recess either.
Mark
Scott Daniel - Turbovans wrote:
> ..............
>
> to swap input shaft - remove bell hosuing,
> see circlip keeping a collar/gear in place, spread ciclip - slide it and the coupling thing down the shaft so the end of the input shaft is exposed.
> it's a very clever way to keep the two shafts engaged. All you have to at this point is unscrew ( normal counterclickwise ) the input shaft you want, from the 'real input' shaft that goes into the trans.
> However...........it can be desperately fiddly.
> If they would have made 1/16th's of an inch more clearance in this hole in the side of the differerential ..........where the spider gears are..........which is a recess you'll 'park' that collar/gear in to be able to unscrew the shaft you're after...........it sure would have helped ! - like a LOT .
> sometimes I put the trans in gear and hold both output flanges to keep things from turning to unsccrew the input shaft.
> Sometimes they're a bit stuck together, but not usually.
> it's getting that last 1 % of clearance you need that's the hard part. In principle it's easy and a nice set up, and would IF they would have just made a bit more room to work.
> scott
> www.turbovans.com
> ----- Original Message -----
> From: David Marshall
> To: Syncro@yahoogroups.com ; TDI-conversion@yahoogroups.com ; vanagon@gerry.vanagon.com
> Sent: Friday, July 25, 2008 9:03 AM
> Subject: [Syncro] HELP - Pilot bearing marked up my input shaft
>
>
>
>
> OK - vehicle is a 1986 Syncro Westfalia with a high powered TDI engine
> installed. After 50.000km on the swap I noticed gear oil coming out
> between the engine and gearbox.
>
> Upon removing the gearbox, I
> noticed that the pilot bearing is now just an outer shell with all of the
> insides totally gone. The input shaft where the pilot bearing was
> resting is mildly chewed up with some scoring where it was bouncing
> around. On the sleeve where it enters the gearbox is some more mild
> scoring but not on the area where the seal is.
>
> Does this mean
> it is time for a new input shaft or would buffing it at the pilot bearing
> area with some emery cloth be all that is needed?
>
> How does one
> one correctly remove the input shaft as I do have a 2nd gearbox here that
> I can remove one from.
>
> Thanks in advance!
>
> David
> Marshall
>
> http://www.hasenwerk.ca
> Box 4153, Quesnel BC,
> Canada V2J 3J
>
> [Non-text portions of this message have been removed]
>
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>
>
> [Non-text portions of this message have been removed]
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