Hi Mark,
In my experience it is unusual for mechanical failure of the clutch to
be intermittent. Some things that I have found that give intermittent
problems are:
1. Break up of the clutch disc itself which results in a double layer of
material sometimes getting between the cover and the flywheel. This will
be a good one minute, bad the next, then good again some time later,
type of situation
2. Air in the hydraulic system which is, as things heat up, expanding
sufficiently to make the difference between releasing and not releasing.
This will result in the clutch releasing less and less as things warm
up.
3. Partial failure of the master cylinder "head" or "port" seal. In this
situation stamping on the pedal may produce clutch release but pushing
it down slowly will allow the fluid to bypass back into the reservoir
and the clutch will not release completely.
Dave mentioned that excessive oil on the disc can cause the clutch to
hang on as well and I can see how this could happen although I have not
experienced it myself.
Michael Salter
www.precisionsportscar.com
-----Original Message-----
From: Mark and kathy LaPierre [mailto:mgtrcars@galaxyinternet.net]
Sent: Friday, April 30, 2004 8:02 AM
To: Michael Salter; healeys@autox.team.net
Subject: Re: 60 BN7 Gearbox tunnel removal
Hi Mike Salter,
Hate to beat this Dead Horse up too much more but Its nice to
get
this straight in ones head. So you think there is still air in the
system, rather than an intermittent hang up of the clutch plate even
though
it worked for awhile.
So after the system worked for awhile it accumulated enough air to
basically shut down. Is that what you mean by "system failure".
Thanks, Mark
----- Original Message -----
From: "Michael Salter" <msalter@precisionsportscar.com>
To: "'Scott Willis'" <ahpowered@hotmail.com>; <healeys@autox.team.net>
Sent: Friday, April 30, 2004 6:17 AM
Subject: RE: 60 BN7 Gearbox tunnel removal
> Hi Scott,
> In your message you say " and it stopped working a couple times." That
> would suggest that on some occasions the clutch would disengage and on
> others it would not.
> If that is in fact the case the clutch disc is definitely not stuck to
> the flywheel and the problem is much more likely to be in the
operating
> system.
>
> Michael Salter
> www.precisionsportscar.com
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