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Sold
by simon8201 - 09/09/26 01:46 PM
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Wales
by Joske Vermeule, September 1
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Forums39
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Jun 14th, 2026
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Joined: Nov 2013
Posts: 17
New to Talk Morgan
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OP
New to Talk Morgan
Joined: Nov 2013
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Early ‘54 Plus Four: First assembly after 25 years apart. Brakes and lines all look good, new shoes and all bled, twice, and adjusted. Takes 3 to 4 pumps to get a good solid pedal, release and wait 10 seconds and same again. Once I have a firm pedal I can stand on it and it does not bleed down. Suggestions please...... many thanks.
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Joined: Apr 2014
Posts: 6,960 Likes: 117
Talk Morgan Sage
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Talk Morgan Sage
Joined: Apr 2014
Posts: 6,960 Likes: 117 |
Did you bleed all the old fluid out ? Did you do the farthest wheel first? Just thoughts.
Best Regards
Lang may yer lum reek
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Joined: Nov 2018
Posts: 6,675 Likes: 441
Talk Morgan Sage
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Talk Morgan Sage
Joined: Nov 2018
Posts: 6,675 Likes: 441 |
It sounds like adjustment to me - first few pumps take up the slack, and then you have pedal.
Are you keeping the car stationary? I've had issues before with 'oval' drums - adjust fine on a 'high spot' but as soon as you move a little, you hit a low spot and need a few pumps.
"Y mae dafad ddu ym mhob praidd"
1972 4/4, 1981 MGBGT, 1984 FLHT1340, 1980 XLH1000, 1990 ZX10
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Joined: Aug 2008
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Talk Morgan Expert
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Talk Morgan Expert
Joined: Aug 2008
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Sounds like seals in the master cylinder to me.
1972 4/4 2 Seater
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Joined: Mar 2013
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Talk Morgan Regular
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Talk Morgan Regular
Joined: Mar 2013
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Classic master cylinder seals, I know as I did mine. A full kit of seals from "power brakes" was under £20 . Fiddly dirty job but worth it ......If you want to stop 
Magwa
1950 Allis Chalmers B tractor
2000 Porsche boxster
2014 Skoda yeti 4x4 elegans
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Joined: Jul 2007
Posts: 28,909 Likes: 354
Salty Sea Dog Member of the Inner Circle
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Salty Sea Dog Member of the Inner Circle
Joined: Jul 2007
Posts: 28,909 Likes: 354 |
I'd go with master cylinder, too 
Graham (G4FUJ)
Sold L44FOR 4/4 Giallo Fly
'11 MINI Countryman Cooper D All4
'90 LR 90 SW
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Joined: Jan 2012
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Gone to Porsche Part of the Furniture
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Gone to Porsche Part of the Furniture
Joined: Jan 2012
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Clamping off all 4 corner flexies first and depressing pedal will inform you whether its Master Cyl, personnaly i am with TBM on this i would be looking for worn out arms and pivots where shoes meet Cylinders, however rolling the car slowly with the pedal half depressed would alert you to oval Drums and the pedal moving up and down, in essence you would feel the pedal pulse under your foot.
Last edited by Dean-Royal; 14/04/19 12:34 PM.
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Joined: Nov 2013
Posts: 17
New to Talk Morgan
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OP
New to Talk Morgan
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Drums turned to true, MC rebuilt, fully bled, new shoes and properly adjusted. I will get out this week and do a number of starts and stops to see that everything gets set into its natural position. Beyond that I suppose I will need to re-visit a new master cylinder.
Many thanks to all for the suggestions.
Bill
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Joined: Dec 2011
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Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: Dec 2011
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When I get these problems I go to the local old car brake guy. Not expensive and it takes Him minutes to solve the problem and it takes Me days and weeks. Not a Morgan specialist but a brake specialist.
Button
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Joined: Nov 2018
Posts: 6,675 Likes: 441
Talk Morgan Sage
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Talk Morgan Sage
Joined: Nov 2018
Posts: 6,675 Likes: 441 |
Sounds like you've got it all covered, but other things i'd check are the backplates - make sure there's no movement and also the lines - you haven't mentioned replacing them, so if they're the original they may be degrading internally and creating 'valves' with small flaps of rubber.
"Y mae dafad ddu ym mhob praidd"
1972 4/4, 1981 MGBGT, 1984 FLHT1340, 1980 XLH1000, 1990 ZX10
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