I've recently resurrected my original master cylinder but am having trouble with the reservoir cap leaking.
I tried fitting a new diaphragm (which is the same as the old one) but still leaking.
Doing a couple of quick measurements the cap isn't compressing the diaphragm against the top edge of the reservoir, its short of making contact by about 2mm.
Am I missing some sort of gasket from inside the cap? Can't see anything in the parts book and I don't remember having any problems last time it was on the bike, but that was about 10 years ago.
I tried fitting a new diaphragm (which is the same as the old one) but still leaking.
Doing a couple of quick measurements the cap isn't compressing the diaphragm against the top edge of the reservoir, its short of making contact by about 2mm.
Am I missing some sort of gasket from inside the cap? Can't see anything in the parts book and I don't remember having any problems last time it was on the bike, but that was about 10 years ago.