Cubby
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 posted on 23/2/07 at 08:00 PM |
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leaky bits
Hi this one’s drivng me fecking mad !! Problem is with the flexible brake lines between master cylinder and reservoir . I’ve had to change the hoses 3
times now .It seems ok for about 6 weeks and does not leak then you look it one day and you find the cotton braid soaked in brake fluid and acting
like a wick soaking it up to the reservoir. I’ve tried braided hose from both Burton and Merlin and both do the same thing and it is supposed to be
suitable for brake fluid (DOT 5.1 I’m using). Anyone else had any similar issues??? The car is still being built so it’s not as though I’m using the
brakes it’s just standing in the garage! Any suggs gratefully accepted
 
Rescued attachment leaky.jpg
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zetec7
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| posted on 23/2/07 at 08:13 PM |
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The bottom end looks solid - brake fluid wicks very well, though - any chance it's got a slight leak at the reservoir end & is wicking down
the outside of the line? If the reservoir is plastic, it won't take much of a flaw in the outlet to let fluid leak slowly around the joint, and
it could wick down to the bottom before building up enough fluid to show...
http://www.freewebs.com/zetec7/
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rusty nuts
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| posted on 23/2/07 at 08:18 PM |
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Probably not the correct type of hose?? You need one with the correct markings on it to get through SVA . Do a search, this has been covered loads of
times. Also Jubilee clips are not the best clips to use on small brake and fuel pipes , your better off using proper fuel pipe clips
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Cubby
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| posted on 23/2/07 at 08:48 PM |
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Brake hose markings:
SYTEC FH013 NBR DIN 73379 B
Think this is ok for brake fluid???
Will check reservoir end
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RazMan
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| posted on 23/2/07 at 09:36 PM |
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Its probably fuel hose which is not suitable for brake fluid. The fact that it is ok for a few weeks and then leaks again is fairly convincing proof -
fuel hose will 'sweat' after a while, actually oozing through the surface of the hose.
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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MikeR
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| posted on 23/2/07 at 09:49 PM |
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you can get the stuff you need from lots of places. i think burton now do it. If you're stuck old land rovers use them.
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andrew.carwithen
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| posted on 23/2/07 at 10:10 PM |
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quote:
Originally posted by Cubby
Brake hose markings:
SYTEC FH013 NBR DIN 73379 B
Think this is ok for brake fluid???
Will check reservoir end
According to the spec sheet for this type hose it is suitable for low pressure brake fluid applications (I've fitted the same to link my
remote reservoir to the master cylinders for this very reason with SVA in mind. 'Though not filled with brake fluid yet so dunno if
mine'll leak or not.)
Just a thought, is it possible the outlet unions are not sealing properly in the remote reservoir. Think they're merely a push-fit into rubber
grommets.)
Andy.
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rusty nuts
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| posted on 23/2/07 at 10:11 PM |
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Burton's didn't do it when I needed mine , they may now . Try Think automotive , got mine from them
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iank
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| posted on 23/2/07 at 10:18 PM |
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quote:
Originally posted by Cubby
Brake hose markings:
SYTEC FH013 NBR DIN 73379 B
Think this is ok for brake fluid???
Will check reservoir end
A quick google shows
DIN 73379 is a fuel hose spec
DIN 74310 is a brake hose spec
FH013 is principly designed as a fuel hose, but the spec sheet says it is ok for low pressure brake fluid. It doesn't say what kind, maybe it
only likes DOT5.
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
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