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> Is this a leaky wheel cylinder?
webmonster
post 29 Sep 2014, 06:16
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I'm getting the Guzzler prepared for a trip this weekend to Whangamata - Brits at the Beach! They currently have 482 registrations... including 4 Morris Isis (IMG:style_emoticons/default/smile.gif)
That'll be the largest confluence of Isi in NZ in recent years, I imagine.

Today I checked over the front brakes. Everything looks good, but the LH leading wheel cylinder looks like it *might* have been weeping slightly. What do you think?
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matthew.h
post 29 Sep 2014, 07:15
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I think its water build up due to being cold and warm air hitting it turning into water
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windrode
post 30 Sep 2014, 02:53
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Hi webmonster,
Looks like a leaky cylinder to me .
Regards Ivan (IMG:style_emoticons/default/angry.gif) (IMG:style_emoticons/default/blink.gif)
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GodalmingYellow
post 3 Oct 2014, 19:48
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If it was a leaky cylinder, the cylinder cap would be wet as well wouldn't it? Where is it supposed to be leaking from? The cylinder is a very good fit and the rubber cup and spring inside also prevent leakage, not to mention the cap which is held on tight by the spring and brake fluid pressure. If it was going to leak, it would be more likely from the other side at the pipe connection.

I reckon condensation too, made to look worse by the camera flash.

Easy answer is to take it off and have a look, then you can service the cylinders at the same time. The shoes are a sod to get back on though, and don't forget which hole the spring hooks into. Worth checking for wear on the adjuster too whilst you are there.

This post has been edited by GodalmingYellow: 3 Oct 2014, 19:49
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webmonster
post 5 Oct 2014, 06:49
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QUOTE (GodalmingYellow @ 4 Oct 2014, 08:48 ) *
Easy answer is to take it off and have a look, then you can service the cylinders at the same time. The shoes are a sod to get back on though, and don't forget which hole the spring hooks into. Worth checking for wear on the adjuster too whilst you are there.

Last time I tried I could not get the shoes off at all due to the return springs being so strong! (IMG:style_emoticons/default/wacko.gif)

I'll have another check in a day or so.

However, all the cylinders have been stainless steel sleeved and my mechanic has assured me that the seals will have a very long life, unless shoe adjustment has been poor and the piston/seal have had to travel further as a result. This may be the case as I adjusted up this shoe a 'click' more than the other one on this wheel.
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matthew.h
post 5 Oct 2014, 08:53
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One click, hmmm just watch for wheel lockup and pulling to that side
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enigmas
post 5 Oct 2014, 10:27
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Brake fluid has a unique smell and feel quite unlike water. So simply touching it and having it on your skin should tell you what it is.
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webmonster
post 5 Oct 2014, 19:11
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QUOTE (matthew.h @ 5 Oct 2014, 21:53 ) *
One click, hmmm just watch for wheel lockup and pulling to that side

Don't worry - the identical one on the other wheel was similarly adjusted. Everything was much better as a result (IMG:style_emoticons/default/smile.gif)

What alerted me to inspect all the brakes was that one rear wheel locked up when I was avoiding running over a dog a couple of months ago.
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webmonster
post 5 Oct 2014, 19:14
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QUOTE (enigmas @ 5 Oct 2014, 23:27 ) *
Brake fluid has a unique smell and feel quite unlike water. So simply touching it and having it on your skin should tell you what it is.

Great idea! Thankyou Enigmas.
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