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Re: Clutch, 73 MGB, argh!

To: John Trindle <johnt@tsquare.com>
Subject: Re: Clutch, 73 MGB, argh!
From: David Lynes <cdlynes@bellsouth.net>
Date: Mon, 01 Mar 1999 00:09:43 -0500
On the list, there occasionally arises problems where the inner liner of
a hydraulic hose collapses.  This might be responsible for what you are
experiencing.  The rubber hydraulic hose off the slave cylinder is
short, and a minor thing to replace, then rebleed. I think this would be
worth a try before you start doing the more expensive things.

David Lynes, Woodstock, Ga
73 Midget 
78 MGB

John Trindle wrote:
> 
> Please forgive me if this has been a recently answered question.  I've
> been off the list for a couple of years, while my B has been mouldering at
> a friend's house due to lack of funds.  A rod bearing was spun, and the
> rod itself (as well as the crank) damaged.
> 
> Well, now the engine is back in the car, and runs great.  However, we
> canNOT get into gear without grinding.  Sort of.
> 
> The symptoms are now that you can get into first or reverse once without
> grinding. Subsequent attempts in the same motor run fail, with grinding.
> 
> Turn the motor off, grumble a while, and try again.  Same thing.
> 
> If you start with the car in reverse (or forward, I think, but I haven't
> tried it) after a rest, the car starts without moving.  As you raise the
> pedal the friction point is *right* off the floor, but the clutch engages
> smoothly.  Any further attempt to shift fails.  If you shut off the
> engine, and put the car into gear (just like before) and start, the car
> moves immediately.
> 
> It's like it "recovers" after a time.  Even at its best, it's unusable
> because the friction point is so close to the floor.
> 
> The pedal feel is very good.  It's been bled a couple times with an
> EZ-bleed with no further improvement.
> 
> The master cylinder is new.  The slave has been rebuilt in the last week
> with a kit (new seal, boot). There is no mechanical slop on the pedal end.
> The clevis bolt from slave to clutch fork is new, because the one which
> was on the car when it was parked was badly worn.  The hole in the clutch
> fork is round, the one in the slave fork somewhat ovalled.  (HOWEVER,
> remember the clutch worked OK just before the engine blew up, and it
> would have had that same ovalling then, plus the worn clevis).
> 
> We've pulled back the clutch fork with a come-along, with the slave
> disconnected, and the clutch does disengage and we can go into all gears.
> Unfortunately, we didn't measure how far back that was.
> 
> The slave fork/bolt/clutch fork end moves 5/16 or 3/8".  There is no
> visible movement when you hold the clutch pedal down.  There is no fluid
> leaking from the master or slave.
> 
> *sigh*.  Any ideas? Thank you very much.
> 
> --
> John M. Trindle | johnt@tsquare.com    | Tidewater Sports Car Club
> '73 MGB DSP     | '69 Spitfire H Stock | '88 RX-7 C Stock

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