Date: Sat, 3 May 2014 09:24:13 -0500
Reply-To: Mike South <msouth@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Mike South <msouth@GMAIL.COM>
Subject: Re: clutch chatter fixed, thanks
In-Reply-To: <535037A2.9040506@turbovans.com>
Content-Type: text/plain; charset=UTF-8
Suppose you put the diesel type in on a non diesel and didn't do that
machinning. What would happen?
mike
On Thu, Apr 17, 2014 at 3:20 PM, SDF ( Scott Daniel Foss ) <
scottdaniel@turbovans.com> wrote:
> yes...
> the diesel vanagon pilot brg has a built-in rubber lip type seal and the
> whole thing fits in the crankshaft perfectly.
>
> however...it's 'longer' so it sticks out of the end of the crankshaft
> where the flywheel would like to fit flush down to the crank.
> Some material needs to be machined out of the crankshaft side of the
> flywheel ...
> like about 25 thousand's worth , depth-wise.
> or just bore out the entire hole in the center of the flywheel , so it
> can fit down over the pressed or tapped-in diesel vanagon pilot bearing.
>
> Scott
>
> On 4/17/2014 5:12 AM, JRodgers wrote:
>
>> Dave,
>>
>> That's good to know - but it still begs the question - "Was the pilot
>> shaft bearing bushing there?" Like Scott said - those bushings often
>> get punched out along the way and never get put back in. Sine yours
>> apparently had the original clutch, the flywheel apparently not tampered
>> with - it's likely that the bushing was still there - BUT did anyone
>> actually see it? If that bushing IS NOT there - it will allow the felt
>> washer to move, then disintegrate and let clutch crud and grime into the
>> pilot bearing, which in turn will considerably shorten the life of the
>> pilot bearing. And then of course you will be right back where you
>> started having to pull the transmission.
>>
>> One other thing - and I hope someone on this list can verify this for
>> me/us - I have read somewhere that the pilot bearing for the VW diesel
>> engine has a built-in seal in the pilot bearing - making the flywheel
>> bushing and felt seal in the WBX arrangement unnecessary - and the
>> diesel pilot bearing is a suitable substitute. Now I don't know this is
>> the case for sure - but I have seen something about this, somewhere.
>> Perhaps another list member can clarify!
>>
>> Best of luck to you.
>>
>> John
>>
>> On 4/17/2014 9:20 AM, mcneely4@cox.net wrote:
>>
>>> I asked Darrell if he had resurfaced the flywheel. He said that it
>>> was not damaged, having neither heat damage nor any surface
>>> imperfections. As he put it, it was "as smooth as a baby's butt."
>>> mcneely
>>>
>>> ---- JRodgers <jrodgers113@gmail.com> wrote:
>>>
>>>> Dave,
>>>>
>>>> You didn't mention it, but with that many miles on the clutch the fly
>>>> wheel would surely have needed refacing. Did you have the flywheel face
>>>> machined back smooth? If so, did the pilot shaft flywheel bushing that
>>>> mounts inside the flywheel get put back in - or if missing was a new
>>>> one
>>>> installed?? This bushing is extremely important because it is what
>>>> holds the pilot bearing felt washer in place. Without it - the washer
>>>> will crumble away and the garbage and debris from the clutch will
>>>> destroy the pilot bearing. It is an item often missed,
>>>>
>>>>
>>>> John
>>>>
>>>> On 4/16/2014 10:23 PM, Dave Mcneely wrote:
>>>>
>>>>> Thanks to everyone who provided information and advice concerning
>>>>> the clutch chatter I was experiencing with my 1991 Volkswagen
>>>>> Vanagon GL Campmobile with manual transmission and 2.1 liter
>>>>> waterboxer.
>>>>>
>>>>> Thanks to Darrell Cook, whose shop in Norman, Oklahoma is listed in
>>>>> the Road Haus shop list, I now have a new, smooth as butter
>>>>> clutch. I got the needed parts from Bus Depot. The problem was
>>>>> that the main shaft seal on the transmission had failed, bathing
>>>>> the clutch with 90W gear oil. The pilot bearing had also partially
>>>>> seized, perhaps because the felt seal had disintegrated, allowing
>>>>> crud into the bearing. The van, with 174k miles, had the original
>>>>> clutch, at least the clutch plate and the pressure plate had
>>>>> VW/Audi marks on them, and Darrell said they were original. Even
>>>>> so, there was some material left on the clutch plate, which was
>>>>> chattering mainly due to the oil on it. The original fork (yoke,
>>>>> whatever) was still perfectly sound, as Darrell said it likely
>>>>> would be, as his experience is that this part wears little on the
>>>>> later model Vanagons. While there, Darrell also installed a new
>>>>> flywheel seal and o-ring, which had seen better days, with some
>>>>> seapage, though not
>>>>>
>>>> t
>>
>>> he cause of the clutch being oiled.
>>>>
>>>>>
>>>>> Thanks again to everyone.
>>>>>
>>>>> mcneely
>>>>>
>>>>>
>>> --
>>> David McNeely
>>>
>>>
>>
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