gv125s No rear brake or brake light
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Hi, as the title says, I have problems with my rear brake. Rear brake not working at all, piston moves around 1mm and returns without problem. I have tested for fluid out of the bleed nipple and there is fluid when pumping the brakes, but im still thinking that there’s a problem with the master cylinder.
Rear brake light not working at all. I have read in the manual that there is an adjuster for the light but all i can see is that the switch is inside the master cylinder housing looking at the two wires out of the back of the cylinder.
Any help is appreciated.
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Based on your location, you just as north as us! Welcome!
Okay, the brake switch may be on the banjo hose itself that’s coming out of the brake hose, if it has gone burst, it can be changed.
Commonly as we know now, the rear brakes can loose power if air manages to get in to the system, so you may simply have air in the brakes. There is a CBS cylinder that goes between front and rear brake (think of it as a half-ABS system)
// Meditation doesn't mean you have to sit still....
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Based on your location, you just as north as us! Welcome! Okay, the brake switch may be on the banjo hose itself that’s coming out of the brake hose, if it has gone burst, it can be changed. Commonly as we know now, the rear brakes can loose power if air manages to get in to the system, so you may simply have air in the brakes. There is a CBS cylinder that goes between front and rear brake (think of it as a half-ABS system)
Hi Marcel, where are you based?
I’ve spotted the CBS cylinder under the rear brake pedal i think. Do you know if the brake light switch is Hydraulic? I’m thinking if both the rear brake and brake light don’t work, then it’ll most definitely be air. Will bleed again tomorrow, I know these linked systems can cause problems
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It is true , but its the cheapest way than using a full blown ABS system with even more electronics to keep an eye on, older GV’s were a lot easier to maintain, just the back had a drum instead of a disc!
We are north UK but have customers in the yorkshire district but in any case , any private work to be done by us , just send an email or for sales enquiries
Good luck bleeding the brakes and get any pics uploaded here if you see anything suspicious done by last keepers anyway
If it’s too urgent, go to Startright Motorcycles in your town (our partners) , and tell them we sent you, they will “probably” have the spare brake switch in their shelves
// Meditation doesn't mean you have to sit still....
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I had a same issue no brakes in foot pedal. I had to replace the rear brake fluid reservoir as cap was corroded, and had to bleed out the system. I’ve started at rear brake, at first fluid was coming out from the bleed nipple but after a while air bubbles appear, moved to front brakes and again to back. And brakes started working.
Brake light started to work after this as well so it looks like it is pressure activated.
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gv125s
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