[DeTomaso] Clutch woes in Asa's garage

[boyd casey]

It sounds like your clutch release lever may not be aligned perfectly. If it
is off by a spline or two you will lose part of the mechanical advantage of
the lever . If I understand it correctly the lever should be at as close to
a 90 degree angle to the slave shaft when the shaft and piston are pushed
all the way into  the slave cylinder. If the angle is off by a few degrees
the shaft is not being pushed straight in. That's the reason behind starting
your free play adjustment with the piston seated all the way into the slave
cylinder and checking the angle of the clutch release lever relative to the
slave cylinder shaft. There is certainly a better then average chance that I
am wrong since I am on the "learn as you go " program , dealing with a
problem similar to Asa Jay's myself. I am currently waiting for my new slave
cylinder , stock master cylinder and braided stainless line to arrive from
Wilkinson.
If I am incorrect in my understanding of the positioning requirements
necessary to correctly adjust the clutch free play someone please chime in.
I would like to be corrected before my parts get here so I can prepare by
getting my clutch release lever in the correct position before I put
everything back together.

Boyd

2009/9/7 Will Demelo <wdemelo at cogeco.ca>

> I have a large return spring and it doesn't return the piston all the way
> in. I can still retract the cylinder if I push real hard on the rod.
> Will
>  ----- Original Message -----
> From: "Göran Malmberg" <hemipanter at hemipanter.se>
> To: "'Göran Malmberg'" <hemipanter at hemipanter.se>;
> <steven.liebenow at att.net>; "'detomaso, mailing list'" <
> detomaso at realbig.com>
> Sent: Monday, September 07, 2009 9:55 AM
> Subject: Re: [DeTomaso] Clutch woes in Asa's garage
>
>
> > Sorry, the spring behind the piston within the cylinder must be
> > weaker than the returnspring to the lever arm.
> > Goran
> >
> > -----Ursprungligt meddelande-----
> > Från: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com]
> > För Göran Malmberg
> > Skickat: den 7 september 2009 15:33
> > Till: steven.liebenow at att.net; 'detomaso, mailing list'
> > Ämne: Re: [DeTomaso] Clutch woes in Asa's garage
> >
> >
> > It can be an idea with the return spring in the slave cylinder, but the
> > return spring must be much stronger, or else we will lose play for the
> > release bearing.
> > It's a big difference between the brake system and clutch system so that
> > the clutch system moves much more fluid. This means that the pipes
> > should be of larger dimension than that of the brake system. One way to
> > reduce the volume of oil transported in the system is not having very
> > large diameter of the main and slave cylinder, which is an advantage.
> > For example, master cylinder 7/8" and the slave cylinder 5/8". The
> > downside of this is that the smaller dimensions of the cylinders create
> > increased load on the pistons and their rubber sealing. We can also use
> > 1" master cylinder and 3/4" slave cylinder for about the same ratio,
> > which is kinder to the cylinders but requires larger fluid tubing.
> > Therefore it might be better to lessen the slave diameter than icreasing
> > the master diameter in order to gain slave movement.
> > Goran
> >
> >
> >
> > Asa Jay,
> >
> > I must agree with the questioning of the spring in the slave..... why is
> > it even there????  The Goose runs a 3/4" bore slave, no spring.  I like
> > the idea of having it fully seated....at rest (plus required gap...for
> > fork finger withdrawal).
> >
> > If you eliminate the spring in the slave for kicks and giggles, and it
> > still does not resolve issue.....
> >
> > ...then look towards master.
> >
> > You said that it was difficult to push fluid back up the line.....could
> > be a restriction in the master's plumbing???  Presuming that someone was
> > in there and replaced it with some slightly incompatible unit??? Looks
> > similar....acts different?
> >
> >
> >
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