Date: Sat, 9 Jun 2007 21:05:05 +0200
Reply-To: Jens Jakob Andersen <jayjay@ZORCK.DK>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Jens Jakob Andersen <jayjay@ZORCK.DK>
Subject: Re: Clutch problem - input needed
In-Reply-To: <c4e7c5f90706091147r7b26588ey9e87beba8310b43c@mail.gmail.co m>
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Hi Neil
Yes - same behaviour. Maybe the clutch pedal could move a bit further
towards the floor (when bleedscrew closed), and after bleedscrew
open, it moved the rest of the way).
Weird thing is, that when I drive the car, engaging and dis-engaging
the clutch feels quite normal (if it wasnt for the grinding of gears.)
I.e. when I start, there is some travel in the cluch pedal before the
clutch is fully engaged.
So it feels like the clutch definately has some travel - if feels
almost right - if it wasnt for something driving the gearshaft.
In my head it can be these thing:
1. Pilotbearing defect, and thus spinning the gearshaft. But the
pilot bearing looked nice. (Can I pull the pilotbearing without
pulling the flywheel? It looked like that the flywheel is blocking
the sleeve of the pilotbearing?
2. Flywheel rough - thus not letting the frictionplates slip. But the
surface of the flywheel looked very nice and smooth.
3. Clutch release bearing not working properly.
3.1 Can be releasearm not moving freely. Yes, it was quite cruddy and
rough, but we cleaned it nicely (didnt pull it though :( ) and it
could move OK after that.
3.2 Air in the clutch hydraulic pipe. We did bleed it. 5-10 strokes
of the cluthcpedal with nice clean airfree brakefluid. Should be enough?
3.3 Could be a rough edge in the slavecylinder, blocking it to move
full stroke.
3.4 Could be a rough edge in the casing of the gearbox where the
releasearm is placed. Again - we didnt pull the releasearm and
renewed the bushes.
But I am really really puzzled.
JJ
At 20:47 09-06-2007, neil wrote:
>>When I bleed the hydraulic system, funny symptom.
>>Ida depresses clutch, I open bleedscrew, clutch-pedal goes the rest
>>of wayto the floor.
>
>Hi.
>
>Did clutch pedal behave the same way before you installed new clutch?
>
>i.e. limited travel?
>
>
>
>
>
>
>
>On 6/9/07, Jens Jakob Andersen <jayjay@zorck.dk> wrote:
>>Hi,
>>
>>I have a clutch problem.
>>
>>For a while I have had a clutch that coudnt disengage fully. I
>>suspected worn pilotbearing.
>>
>>Today I changed the clutch, put in a brand new LUK clutch - so nice.
>>
>>The Pilot-bearing looked fine, so I didnt change it, just gave it a
>>little bit of grease. Used mypinky to grease it - felt fine.
>>
>>When I started the engine, I STILL HAVE THE SAME PROBLEM!!!.
>>
>>It feels like the clutch just doesnt dis-engage enough.
>>
>>I have to switch off engine, put in gear, start engine with clutch
>>depressed, other foot on brake, since cars just wants to drive.
>>
>>When I bleed the hydraulic system, funny symptom.
>>Ida depresses clutch, I open bleedscrew, clutch-pedal goes the rest
>>of wayto the floor.
>>
>>Looks to me like some kind of problem, that the release-bearing arm
>>cannot turn enough. Maybe problem with the release-arm bushings?
>>Maybe problem with slavecylinder?
>>
>>I am fully puzzled, I will get another slavecylinder early sunday
>>morning (used one), and try to put that on my car,and see if it
>>solves problem.
>>
>>Anyone have ANY idea of what can be causing the problem?
>>
>>And does anyone know how much the slavecylinder-piston should be able
>>to travel?
>>
>>/JJ
>
>
>--
>Neil Nicholson. 1981 Air Cooled Westfalia.
>
>http://web.mac.com/tubaneil
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