Fandango
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| posted on 28/2/16 at 08:26 PM |
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Servo / Master cylinder Rebuild
Hi all.
I have a problem with my Locost since buying it.
It is fitted with (I am pretty sure) Mk2 Escort master cylinder with servo.
This works very poorly, a wooden feel to the pedal, and very little retardation. I have made sure the front brakes are not seized. The car is only to
be used as a track toy, so would like very sharp brakes.
The engine is currently out, so I thought it would be a plan to rebuild the servo, and master cylinder, as the seal kits are available on ebay, at
around £12.
Can anyone direct me towards any video tutorial on rebuilding them?
"I hate to advocate drugs, alcohol, violence, or insanity to anyone, but they've always worked for me." Hunter S Thompson
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Fandango
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| posted on 28/2/16 at 08:27 PM |
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[Edited on 28/2/16 by Fandango]
"I hate to advocate drugs, alcohol, violence, or insanity to anyone, but they've always worked for me." Hunter S Thompson
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britishtrident
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| posted on 28/2/16 at 08:41 PM |
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Very unlikely to be fault in the master cylinder if the brakes are operating on all 4 wheels -- do you actaully have the servo fitted and the vacuum
line connected?
Without an operating servo a servo master cylinder will give a very hard unresponsive pedal.
[Edited on 28/2/16 by britishtrident]
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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Fandango
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| posted on 28/2/16 at 08:44 PM |
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Yes, the vacuum pipe is present, and undamaged, the servo looks to be correctly installed.
"I hate to advocate drugs, alcohol, violence, or insanity to anyone, but they've always worked for me." Hunter S Thompson
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Fandango
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| posted on 28/2/16 at 08:45 PM |
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quote:
Originally posted by britishtrident
Very unlikely to be fault in the master cylinder if the brakes are operating on all 4 wheels -- do you actaully have the servo fitted and the vacuum
line connected?
Without an operating servo a servo master cylinder will give a very hard unresponsive pedal.
[Edited on 28/2/16 by britishtrident]
Yes that is exactly what it feels like.
"I hate to advocate drugs, alcohol, violence, or insanity to anyone, but they've always worked for me." Hunter S Thompson
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britishtrident
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| posted on 28/2/16 at 08:58 PM |
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If you put gentle pressure on the pedal you should be able to feel the pedal move when the engine is started, and then after the engine is stopped you
should feel the pedal movement change after you give it a couple of pumps to exhaust the vacuum as per MOT test.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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Fandango
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| posted on 28/2/16 at 10:00 PM |
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I can`t do the test at the moment, as the car is without engine, but I do recall there was no tangible servo assistance before.
"I hate to advocate drugs, alcohol, violence, or insanity to anyone, but they've always worked for me." Hunter S Thompson
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Dick Axtell
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| posted on 29/2/16 at 09:58 AM |
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The Girling servo fitted to the Mk 1/2 Escorts are non-serviceable. Only the small annular filter, fitted around the input rod, is
replaceable.
I recall that mcyls of this era were TV/CV (Tipping valve/Centre valve) type. Not sure if you can still get refurbishing kits for these mcyls.
Work-in-Progress: Changed to Zetec + T9. Still trying!!
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avagolen
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| posted on 29/2/16 at 06:39 PM |
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Just a thought, Is the one way valve in the vacuum pipe the correct way around?
The Answer for everything, but never the last word....
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Fandango
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| posted on 29/2/16 at 07:35 PM |
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quote:
Originally posted by avagolen
Just a thought, Is the one way valve in the vacuum pipe the correct way around?
Worth a look eh? I will check it out.
"I hate to advocate drugs, alcohol, violence, or insanity to anyone, but they've always worked for me." Hunter S Thompson
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Fandango
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| posted on 24/5/16 at 12:02 PM |
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Just got back to looking at this.
The servo definately does not work, as the engine is out, I have connected a vacuum off another car. The servo is leaking, and not working.
So the plan now to simply source a new (non servo) master cylinder. Does anyone have a clue which model to look for, I can make adapter plate / rod
quite easily, so no problem there. The car is track only, will be on sticky tyres, so I do want "sharp" braking, it weighs around
520kgs.
Cheers all
"I hate to advocate drugs, alcohol, violence, or insanity to anyone, but they've always worked for me." Hunter S Thompson
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