Hi all - I've just had a pretty rough TXT Boy 50 given to me by a friend who couldn't get it running but decided his kids wouldn't ride it anyway and it needed a lot of tidying it up.
I've got it started and running now fairly well, and am cleaning it all up, but the brakes a bit of an issue.
All the pistons on both calipers were pretty stuck and I managed to free them off eventually, and luckily the pistons & seals were all in good nick, just I think it was all dried out, and some of the fluid had turned to thick pasty gunk. I've cleaned them all out now, and am trying to bleed the rear setup but it just does not appear to be able to get any pressure in it for some reason, ie I've run loads of fluid through it but pedal does not firm up at all.
So I figured the master cylinder was in need of an overhaul and stripped it. It was gunky inside, like the rest, but once cleaned thoroughly it's all good, and the piston & o-ring in it etc all look in perfect condition now they're clean.
When I open the bleed nipple on the caliper and press the pedal a little bit of fluid comes out, but if I nip it up and then work the pedal several times it makes no difference to the pedal, not matter how many times I've done the pedal>open nipple>bleed a bit>keep pedal down>close nipple>repeat sequence.
Have I missed something, or is there a particular way these ones need doing?
Don't know what year the bike is (is there an easy way to tell?), but the master cylinder at least appears to be a Brembo with the casting 4767.
I know the obvious thing to suggest here is to just buy a load of new bits, but
1) as this bike is fairly scruffy and was free I don't want to spend tons on it, and
2) The master cylinder all seems decent so can't really see that it'd help necessarily even if I got some bits to refurb it in all honesty.
Appreciate any useful help, thanks!
Jim