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+--- Thread: Brakes...Help! (/showthread.php?tid=71674)
Brakes...Help! - Rikki - 27-02-15
Hi folks
I've just been cleaning my calipers, put rubber grease on the pistons etc. When I was pushing them back in, one of them popped out - not completely but enough for a few drips of fluid to leak out.
What consequences might this have? Not sure if any air got in the caliper or not.
Any advice?
Re: Brakes...Help! - darrsi - 27-02-15
When you say popped out, did it go past the seal?
Re: Brakes...Help! - Paulfzs - 27-02-15
bleed the brakes dont risk it !
20 minutes of messing around is better than weeks of being deaded because your brakes stopped working and you hit a roaming cow
Re: Brakes...Help! - darrsi - 27-02-15
(27-02-15, 03:35 PM)Paulfzs link Wrote: bleed the brakes dont risk it !
20 minutes of messing around is better than weeks of being deaded because your brakes stopped working and you hit a roaming cow
Pesky Roman cows.
Re: Brakes...Help! - Rikki - 27-02-15
Think it must have edged past the seal (or at least part of it - was at a slight angle when it happened) in order for the bit of fluid to leak out. It slipped straight back in though & was only out of place for a fraction of a second.
Would bleeding remove any potential bubbles in the caliper? I think I read about a technique on here where you remove the master cylinder cover, tie the brake lever back & leave it for a few hours for bubbles to migrate to the top of the system. Or it could have been a dream, I'm not 100% sure. Anyone else heard of this?
Re: Brakes...Help! - Paulfzs - 27-02-15
(27-02-15, 03:44 PM)darrsi link Wrote: [quote author=Paulfzs link=topic=16096.msg185046#msg185046 date=1425047738]
bleed the brakes dont risk it !
20 minutes of messing around is better than weeks of being deaded because your brakes stopped working and you hit a roaming cow
Pesky Roman cows.
[/quote]
:rollin :rollin :rollin :rollin :rollin :rollin :rollin :rollin :rollin
Re: Brakes...Help! - HarryHornby - 27-02-15
If it's the rear caliper on a 600 I wouldn't bother, they're shite and ain't gonna stop you hitting a cow from any culture, bled or unbled! :b (Says he who's going to be giving his 600 rear caliper some maintenance love this weekend)
Re: Brakes...Help! - darrsi - 27-02-15
(27-02-15, 04:18 PM)Rikki link Wrote: Think it must have edged past the seal (or at least part of it - was at a slight angle when it happened) in order for the bit of fluid to leak out. It slipped straight back in though & was only out of place for a fraction of a second.
Would bleeding remove any potential bubbles in the caliper? I think I read about a technique on here where you remove the master cylinder cover, tie the brake lever back & leave it for a few hours for bubbles to migrate to the top of the system. Or it could have been a dream, I'm not 100% sure. Anyone else heard of this?
Yep you heard right, I normally do that trick after my brakes have been bled, it tends to sharpen them up that little bit more, so definitely worth a go. Best to leave it over night though.
If you loosen the MC lid make sure the bike won't get touched and I normally stick loads of rag around it in case of any accidental spillage.
I've been known to leave something on my seat to remind me as well, I'm not a morning person!
Re: Brakes...Help! - Jules-C - 27-02-15
If the brake feels normal and not spongy you haven't let enough air in to be a problem. But bleeding it won't do any harm either way.
Re: Brakes...Help! - Rikki - 27-02-15
(27-02-15, 05:17 PM)HarryHornby link Wrote: If it's the rear caliper on a 600 I wouldn't bother, they're shite and ain't gonna stop you hitting a cow from any culture, bled or unbled! :b (Says he who's going to be giving his 600 rear caliper some maintenance love this weekend)
I hear what you say about the rear caliper. Just spent a couple of hours on that one alone. Pushed the pistons out & cleaned them. Would they go back in? Hell no. Used a G-clamp to apply pressure. Broke the G-clamp! Used a bigger G-clamp. Faffed about for a l-o-n-g time & finally got them in far enough to get it back on again.
Haven't been for a test ride yet - will do this over the weekend & report back with the results. Right now though it's time for the pub!
Cheers all!
Re: Brakes...Help! - darrsi - 27-02-15
(27-02-15, 07:22 PM)Rikki link Wrote: [quote author=HarryHornby link=topic=16096.msg185060#msg185060 date=1425053860]
If it's the rear caliper on a 600 I wouldn't bother, they're shite and ain't gonna stop you hitting a cow from any culture, bled or unbled! :b (Says he who's going to be giving his 600 rear caliper some maintenance love this weekend)
I hear what you say about the rear caliper. Just spent a couple of hours on that one alone. Pushed the pistons out & cleaned them. Would they go back in? Hell no. Used a G-clamp to apply pressure. Broke the G-clamp! Used a bigger G-clamp. Faffed about for a l-o-n-g time & finally got them in far enough to get it back on again.
Haven't been for a test ride yet - will do this over the weekend & report back with the results. Right now though it's time for the pub!
Cheers all!
[/quote]
Shouldn't be that tough to push back in at all.
Re: Brakes...Help! - Paulfzs - 27-02-15
my original rear took tones of pressure to get back in, my fzs thou caliper i can do with my fingers