master cilynder

[oggy]

my handel bar cilynder leaks out of the rubber seal that covers the piston,dose any body fix it near midlands ta

[oldbiker]

try entering pamotorcycles.uk in google they sell piston repair kits if you know what it came from they may be able to sort it.

the kits cost about £20 and contain piston, spings, seals, circlips etc.
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to repaire

remove the banjo and bolt,

remove the rubber cover over the plunger that the brake lever pushes (this is the end oppersite to the banjo),

look deep inside the hole that the plunger sits in, and you will see a circlip remove, the circlip,

the piston with all its seals should easily pull out, if not use a narrow screwdriver (with the point ground off) to push it out.

now clean it all with a little parafine or turps etc the new piston kit is simple to fit. it just pushes in to the hole that the old one came out of,

replace the circlip with the new one in the kit..

it can be made easy if you have a vice to hold the master cylinder and maybe a second person to help, (one pushes the pluger in while the other removes/replaces the circlip) but it is quite straight forward