2021 keeway superlght125

[Deano966]

I have a keeway superlight 125 2021 how do you bleed the brakes I notice the front brake has 2 bleed nipples and the rear brake has 2 brake resivours I’ve managed to bleed the front brakes but not the back it’s not becoming firm 

[RideWithStyles]

Yes you do have two bleeds at the front as it is a simple dual brake or if you was Honda they would call a “simple assist anti-dive”, and it creates more problems than it solved- CRAP.

front caliper has two separate circuits for the Brake- left bleed nipple is for the other pipe on the left which is the front brake. You bleed them as normally.

The right or lower two on the same caliper are joint to the rear master cylinder and so to the rear brake system, And as you can see is very long with 

Two separate lengths of pipes (1 and two lengths) and joints inbetween. So bleeding them will take a while and depending on how you do it/where the air blockage is?

But you’ll have to go back and forth between the two calipers in stages till you can work out which one /pipe is the main problem, if you have a brake vacuum pump or kit this will make it much easier.

 maybe even unmount them off the bike worst case?.  But remember to have something placed between the pads to act as the disc or the pistons may pop out…

 

 

 

Edited September 2, 2024 by RideWithStyles

[Deano966]

Thank you for the reply, I get what you mean I was only bleeding the rear calliper nipple it was spitting out brake fluid but not firming up, I wouldn’t have thought the second nipple on front calliper would be associated with rear brake, seems more complicated than it needs to be lol, I’ve done brakes on bikes before but this seems overkill, I press brake lever open nipple close nipple then release brake 

[bud]

It was done this way to avoid having to fit ABS.  It became mandatory for ABS, or a combined braking system to be fitted.

This is the cheaper option that a lot of Chinese manufacturers opted for. 

[Deano966]

Ah i see must be relatively new then, this is the newest bike I’ve owned to date most have been pre 2016 so all had standard braking system 

[bud]

I think it was Euro 4, in 2018 it changed.

[RideWithStyles]

Yes bud is correct, euro 4 bikes 2017 to 2018 onwards had abs mandatory.

Well bleeding ABS systems can be a pain in the arse to all the same, anyway that doesn’t change your problem.

youll just have to work out the best way with what you have to get the results unless you want to invest in some other kit to help you? One way valves,vacuum pump etc.