Hi Ferg,
I was about to respond when Nev replied with the same suggestion.
I have recently worked on two XS Mono kits that have been well stored
(warm and dry) for the last twelve years.
As a matter of course, I strip and inspect all components before
assembling and on both I found that the brake slave cylinder pistons
were stuck fast.
Using a compressed air line to pop them out, I discovered that both were
covered in a glutinous substance (see Picture).
I am not sure what this is but would hazard a guess that it is old
hydraulic fluid that would have been used to lubricate the piston during
manufacture and being hygroscopic, has absorbed water over the years and
degraded.
I would suggest dismantling all of your hydraulic components and
carefully cleaning and reassembling with fresh hydraulic fluid. I pretty
sure that you will then be able to bleed the system as described by others.
As an aside, I am certain that this is the cause of high brake disc and
pad wear with associated hot discs that other mono pilots have
complained about over the years.
If you intend to keep the aircraft and have a desire to reduce
subsequent maintenance, I would also highly recommend having all the
components anodised. I have done this to mine and can send picture
offline if you are interested.
Nigel
On 04/10/2013 04:29, f.kyle@sympatico.ca wrote:
>
> Cheers,
>
> I am having the worst time trying to force the fluid up into the brake
> system from the bleed valve on the main wheel. We opened the
>
> upper fill plug to relieve what we thought to be any resistance and
> with a syringe attempted to fill the various parts.
>
> First of all the syringes leaked somewhat and we did our best to press
> fluid into the wheel portion but after 250 ml, and much huffing and
> puffing, have seen little result above, even though we induced a
> vacuum from the top to expedite matters..
>
> Any hints or kinks as to a more perfect procedure? All ideas accepted
> at par.
>
> Thanks, Ferg
>
> *
>
>
> *
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