If you do end up doing an R&R on the clutch, make sure you order the a new
bushing for the throwout lever pivot. This is the clutch withdrawal lever
bushing (~$1.95) according to Moss. By now, most people are familiar with
the wear that goes on in the clevis and pedal at the master cylinder. This
bushing wears in the same way and will allow the throwout bearing to move
around. This will cause clutch chatter and premature failure.
I'm not completely clear on your description of the lever movement. With
the arm sitting in the position where the slave would be pushing on it,
there should be plenty of movement towards the slave, this is pulling the
bearing away from the pressure plate. I don't think that there is a good
way to tell anything about the clutch internals without pulling them out.
Hopefully the lever will contact the pressure plate when it is roughly
perpendicular to the transmission. This would be the point of greatest
mechanical advantage, but with bushings and etc worn, it might not be there.
About the only way for this to cause a loss of pressure on the arm, is for
the release bearing to come off of the lever, or for all the diaphragm
springs to break off the pressure plate. Not to say that can't happen, but
it usually doesn't.
I agree with Paul Hunt's plan of action. Most likely something is holding
the slave extended.
James Nazarian
71 MGBGT V8
71 MGB Tourer
-----Original Message-----
From: owner-mgs@autox.team.net [mailto:owner-mgs@autox.team.net] On Behalf
Of Bob Howard
Sent: Thursday, August 12, 2004 10:57 AM
To: holtt@nacse.org
Cc: mgs@autox.team.net
Subject: Re: clutch bleed wierdness
Hmmm. Not a good sign, that "flat and no pressure".
Oh well, the good part (so to speak) is that removing the engine & gearbox
to change the clutch is a lot easier in an MGB than in a TD. If
you have all the parts to hand, it's an in&out in a day. I would buy
new everything, the clutch assy, throwout bearing, clips, everything, as the
cost in $$ isn't as great as the cost in time. Get it done, and it's done
for another 60M miles or more.
Bob
On Thu, 12 Aug 2004 07:08:56 -0700 Tim Holt <holtt@nacse.org> writes:
> Was driving in town and noted the clutch seemed a little soft. Came
> to a stop sign, and then went to shift up to 2nd on moving, and the
> clutch was just dead - flat and no pressure. I replaced the master
sort of
> on uh - "it' must be it" reaction (given I'd replaced the slave 6
> months before).
> So last night I climbed back under and manually moved the clutch arm
> (with slave removed). It moves about 1" towards the front (towards
> the SS). If I push it back (like where the SS would push it), it also
> moves about an inch. It also makes a click sound and has a certain
amount
> of rattle/play to it. This is obviously not a very comfortable thing
> to hear and makes me think something's fubar in the clutch itself...
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