Seized Rear Caliper HELP!
- Thread starter Garvey20031
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Garvey20031
Super Garvey
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DOT4 im using. just about to have another bash!
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They can be a right pain in the arse eh matey...it should bleed up tho if all components are in reasonable condition and set correctly...bring the caliper up to the seat height, put something between the pads, eg. open end spanner, and have a go bleeding with nipple at the highest point. Set free play in pushrod first tho.
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Solution to rear brake bleeding
Hi
I've never found problems bleeding front brakes, coz gravity helps. If you look at the routing of the RSV rear hose, it's got a high spot in the middle, and the caliper looks like it was designed to be the other way up - the bleed nipple is in the wrong place.
My solution is to route the brake hose OUTSIDE the frame. Maybe it looks odd, but it's safe if you cable-tie it out of the way of your foot. Then you can get the bike on a bench, take the caliper off, leave the mastercylinder where it is, and by raising and lowering the caliper above or below the mastercylinder you can make gravity put the air where you want it. Lower the caliper way below the master, push in the pistons, and the air bubbles up to the reservoir. Pump the cylinders out again and repeat. Do that a few times and you're there.
Another mod I've done is to get rid of the brake light switch (put a Hydraulic one on for MOT time - like we use the back brake anyhow), and put a bolt and lock-nut where the brakelight switch should be - you've got a proper adjustable brake lever. The thread is a fine one, but a decent supplier will find one for you.
Hi
I've never found problems bleeding front brakes, coz gravity helps. If you look at the routing of the RSV rear hose, it's got a high spot in the middle, and the caliper looks like it was designed to be the other way up - the bleed nipple is in the wrong place.
My solution is to route the brake hose OUTSIDE the frame. Maybe it looks odd, but it's safe if you cable-tie it out of the way of your foot. Then you can get the bike on a bench, take the caliper off, leave the mastercylinder where it is, and by raising and lowering the caliper above or below the mastercylinder you can make gravity put the air where you want it. Lower the caliper way below the master, push in the pistons, and the air bubbles up to the reservoir. Pump the cylinders out again and repeat. Do that a few times and you're there.
Another mod I've done is to get rid of the brake light switch (put a Hydraulic one on for MOT time - like we use the back brake anyhow), and put a bolt and lock-nut where the brakelight switch should be - you've got a proper adjustable brake lever. The thread is a fine one, but a decent supplier will find one for you.
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Garvey20031
Super Garvey
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Might give that try this week then! Well, if I can't sort a rear brake by the weekend then im booking it in to a dealer to sort. never spent so much time on a bloody rear brake!
A
A303
Guest
Are you the Robin who has been flogging Mille bits on Ebay recently?
Garvey20031
Super Garvey
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:doug:doug:biggrin:doug:smilie:crazy:burnout:cheers:hail:banana:banana:bigsmile:bigsmile
I haver something to say!
I HAVE A REAR BRAKE THAT WORKS! I HAVE A REAR BRAKE THAT WORKS! I HAVE A REAR BRAKE THAT WORKS!
sorry so bloody happy. probly will seize on the way to work tomorrow but im just really happy! did I say my rear brake works!
Changed the master cylinder bled again and its tops! thanks for all your help on this one guys!
:thumbup beers on me if we meet up
I haver something to say!
I HAVE A REAR BRAKE THAT WORKS! I HAVE A REAR BRAKE THAT WORKS! I HAVE A REAR BRAKE THAT WORKS!
sorry so bloody happy. probly will seize on the way to work tomorrow but im just really happy! did I say my rear brake works!
Changed the master cylinder bled again and its tops! thanks for all your help on this one guys!
:thumbup beers on me if we meet up
- Joined
- Oct 25, 2008
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- peterborough
You do realise you have to do this every other week to keep it working as it fades :biggrin
Garvey20031
Super Garvey
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- Wiltshire, UK
I can live with that as Ive bled the sytem so many times over the past couple of weeks I can do it in my sleep.
Thinking of contacting the wsb teams to see if anyone wants the brakes bled suring racing in the pits :lol:
Thinking of contacting the wsb teams to see if anyone wants the brakes bled suring racing in the pits :lol:
L
LEGS
Guest
Well done Garvey, you won't need to bleed it again. If it does get a little spongy, then hang a 4 litre container of oil or similar off the rear brake lever with a cable tie overnight. By morning it will be back to normal.
