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Re: novice question on clutch hydraulic replacement & performance

To: "Bill Saidel" <saidel@crab.rutgers.edu>, <mgs@autox.team.net>
Subject: Re: novice question on clutch hydraulic replacement & performance
From: <paul.hunt1@virgin.net>
Date: Sun, 27 Aug 2000 16:27:33 +0100
Certainly sounds like air in the hydraulics, but to be sure put the car up
on ramps and measure the travel of the slave pistion while someone operates
the pedal - you should see about 1/2" of travel.

If it is significantly less than that then you have air.  Clutch bleeding is
supposed to be a real pig on the MGB, possibly because of the long vertical
run of relatively large bore pipe - unless you can pump a whole pipe-full of
fluid and air downwards fast enough to carry the air with the fluid, some of
the air is bound to keep coming back up before it is expelled.  I didn't
even bother trying when I replaced my clutch hydraulics, instead I tried
some lateral thinking and wondered if filling the system from the *slave*
(so pumping the air upwards instead of down) might overcome the problem and
it did.  I connected my Gunsons EeziBleed to the slave bleed nipple with
very low pressure from the spare tyre and filled the complete system that
way, just kept watch on the m/c until clear golden liquid got about 3/4 way
up, shut the slave nipple, disconnected the Gunsons, topped off the m/c and
hey-presto - full travel.  Only took a couple of minutes.

PaulH.

----- Original Message -----
From: Bill Saidel <saidel@crab.rutgers.edu>
To: <mgs@autox.team.net>
Sent: Sunday, August 27, 2000 3:13 PM
Subject: novice question on clutch hydraulic replacement & performance


> Notice the novice, not the newbie...means this particular repair is a
> first time for me.
>
> Story: clutch on a 76B, 4 speed works fine before this situation...clutch
> hydraulics disappear on a nice Sunday afternoon drive.
>
> So I replace the MC, the SC & the line (not pretty but intact). Bleed the
> line but then, I don't know what bleeding really means (and thanks for
> some of the older answers a bit ago guys). Tried a few things but am stuck
> now.
>
> Symptoms: clutch point at the floor or below the floor
>      trying to get into reverse creates a horrible grinding noise 8 out
> of 10 times (which makes me think the engagement point is beyond my foot's
> reach),
>      with a bit too much effort I can go from 1st to 2nd to 3rd to ....
>
> I certainly would appreciate some help about i) what to do next and ii)
> explain to me what is the mechanical issue that I am stuck with.
>
> TIA,
> Bill
> '76B
>
> "Sacred cows make divine hamburgers."
>
>


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