AlexXtreme
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| posted on 1/10/14 at 09:21 PM |
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rear brake cylinder
Hi All, I need a bit of a hand regarding the rear brake cylinders on my car.... :-)
It is a Quantum Xtreme built by Quantum for the previous owner however I have no idea on the donor car! I thought it was a Sierra pinto...
I have just had my hip replace (although only just turned 50 - too much running) and have not been able to drive the car for the last 7 months or
so.
I tried to wheel out the car this weekend to check it over and the rear brakes have partially seized.
I stripped down the brakes and have realised that there were no std brake parts for the Sierra and I had no idea on the year.
I measured the dia of the cylinder which is around 19mm or just over and with some quick research it seems this is quite common for the Cortina as
well as other cars but not Sierra.
The fitting into the brake mounting plate is definitely oblong and not round (so I have Locas?).
Can I buy a 19mm dia Ford brake cylinder and it will fit or are there many different types? I am guessing that the car was made in the original car
was a 1975 (p-reg)?
Thanks in advance and hopefully I will be back driving again!
Cheers
Alex
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ian locostzx9rc2
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| posted on 1/10/14 at 09:36 PM |
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Probably easier to take the old cylinder to your nearest motor factors to match up
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JAG
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| posted on 1/10/14 at 09:39 PM |
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That sounds like a standard 3/4" (19.05mm) wheel cylinder. Round or Oblong turret it's probably a Lucas part. Just take it along to a Ford
Dealer or contact a specialist in RWD Fords (Cortina, Capri, Escort or Sierra) and they should be able to help you out.
Lucas made these cylinders in loads of different sizes so be careful.
Justin
Who is this super hero? Sarge? ...No.
Rosemary, the telephone operator? ...No.
Penry, the mild-mannered janitor? ...Could be!
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AlexXtreme
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| posted on 1/10/14 at 10:12 PM |
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so I have to take it off and take it down to the shop..? I was trying to avoid the potential mess of dong this and having brake fluid leak everywhere
when my back is turned!
Cheers
Alex
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britishtrident
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| posted on 2/10/14 at 06:00 AM |
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You have a Girling (aka. Lucas-Girling) pattern rear system assuming the threads on the unions are metric it is the same cylinder 3/4" bore
(19mm) as used on the Escort mk3 and Cortina mk3 1300
Brakes International carry this cylinder as BWC5079
B
rakes IntLink ]
[Edited on 2/10/14 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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britishtrident
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| posted on 2/10/14 at 07:00 AM |
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quote:
Originally posted by JAG
That sounds like a standard 3/4" (19.05mm) wheel cylinder. Round or Oblong turret it's probably a Lucas part. Just take it along to a Ford
Dealer or contact a specialist in RWD Fords (Cortina, Capri, Escort or Sierra) and they should be able to help you out.
Lucas made these cylinders in loads of different sizes so be careful.
To stop fluid loss.
If you have proper OEM style rubber/textile brake hoses clamp the hose with a hose pinch (such as Sealey VS037). If you haven't got a hose
pinch if you are careful not to damage the hose you can make-do with pair of Mole Grips pad with the jaws padded some cloth, taking care to pinch
the hose just enough to stop the fluid flow.
If you have metal braided hoses don't clamp the hoses but take the lid off the master cylinder, then top it up to the very brim and then
excluding any air, seal over the top with cling film using an elastic band to tightly secure it.
With older master cylinders without a fluid level float switch just top up the cylinder and you can then trap a thin piece of polythene under the
master cylinder cap to form an airtight seal..
[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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AlexXtreme
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| posted on 2/10/14 at 06:12 PM |
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I have braided hoses so can not clamp them.
I have tried the cling film on the brake master cylinder truck before but the fluid still slowly leaked leaked out - short term not an issue however
if I have to try and find a supplier of the correct cylinder during this time i am worried that the system might empty itself!
Anyway Britishtrident - you sounded very confident that that this is the correct version (and it was the version I thought as well), so have two
cylinders being delivered tomorrow for "this weekends" job! Thanks for the advice..:-)
Now I have to just work out out to get the other drum off and I am guess both cylinders are not in the best condition... one drum almost fell off, the
other is very solidly in-place. It looks as though the bigger hammer is required!
Looking at the state of the one I can see I think it must have been seized for at least a couple of years.
Cheers
Alex
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AlexXtreme
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| posted on 22/10/14 at 05:04 PM |
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Britishtridant,
Thanks for your help on this and the new cylinders you suggested fitted fine :-). Both sides were partially seized and I guess this is how it passed
the MOT
How did you know which size they were were not from the original car? Are these smaller cylinders used to get a better brake balance with the lower
weight?
I am looking forward to seeing what the braking will be with both pistons working on both sides.....
Cheers
Alex
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