Jerking Jerk Brakes Problem

[NC39]

Hi all, I'm riding a class 2 bike and I'm not that good with bike.

I have a problem with my front brakes as it jerking the wheel as I brake.

Its getting worst now especially approching traffic light.

It start as I had my brake lines change in a shop.

Not long the fluid in the reservoir leak and got it fix by mechanic.

Now the brake start to "dance" while braking.

"BrakeDancing"

what a Jerking Jerk! Hate it.

I think there must be an airlock.

So any advice before I start bleeding the "JerK"?

[hachi]

You can start now might be a air bubble stuck some where...If not wrap rotors would cost a bomb...

[superspeed123]

How long u been using the bike and what bike u riding?? Have u done servicing on your two front calipers??? Sometimes too much dirt and brake dust will clogged the brake pistons and piston unable to move back when u release your brake. get a mechanic to service your all your brakes and possible, change all the seals inside the calipers. Do it ASAP or u will wrap your disc rotor. Dun use those cheapo brake pads becos it will have a lot of brake dust.

A simple test, after a short ride, touch both your front calipers.Most likely, one of the caliper will be very much hot than the other caliper!!

[NC39]

Q1 > I hv been using it since Febuary, millage abt 17,000 nw.

Q2 > Z1000.

Q3 > No.

 

I hate mechanic, dunt trust em alot. but not all lah... I do have regular one tat I go to.

So to get it rite "Hands On". read more books.

Will do tat servicing wen finish reading the service mannual and wen the rain stops.

[duo]

One person say wrap the next also wrap.

 

Its warped. Typo error or not it gives a whole different meaning. If its warped it would be very expensive to replace seeing that you are riding a class 2 bike. If you know how to bleed the brakes yourself then do it. If not get your trusted mech to do it for you.

[NC39]

WRAP- We Repect All Peeps. LOL

Still alzy lah.. c how later.

thank you all u peeps.

[QuaXum]

eh, ur bike got ABS is it? ABS will cause the jerking effect.

[NC39]

eh, ur bike got ABS is it? ABS will cause the jerking effect.

 

Hi QuaXum, I dont think so hv ABS.

Just screw up brakes lah. still not duing it.

Parking there collecting dust.

Anyway the jerking is so bad dude, like flicking the front brake on and off but actually i'm just holding on to it.

[bernardk]

oh dear. thats pretty sh!tty to have such a brake. But does sounds like ABS. But i dun think Z1000 got ABS rite. Hmmmm.... i hope you can solve your prob fast. let us knw the result.

[QuaXum]

i don't know much abt this bike, but from what i googled, it shows that there are a couple of model has ABS. one of which is the 2007 model. which year is this? you might wanna google "Z1000 ABS" for more information. this bike quite exotic in sg. so maybe not much people knows abt it. maybe check with the dealer?

[NC39]

Hey peeps, I had bleed my brakes yesterday.

Some bubbles aright. Well that fix all my problems.

Well sh!t NO! It still jerking when I rode this morning.

I reach home unscrew the calliper mount.

I check if the rotor warp. Slowly i push the bike looking at the tip of the rotor and the calliper.

So it did warp. Close inspect it s abt 1mm out.

Much closer inspection ....

Damnit, the rotor scrape against the end part of the calliper.

Screw unscrew.... well finally I loosen the axle. It look good then.

The mount is tilled. Will see tumolo lah. I'm so sick of it.

[bernardk]

double post.

Edited December 8, 2010 by bernardk

[bernardk]

double post.

Edited December 8, 2010 by bernardk

[niteblade]

sounds like a case of your disc being warped... had a similar problem too...

[ryanryanryan]

i had the same exact problem, i wen to shop , they spray oil at the roller which allow u to press n depress ur brake lever and after tat everytings goes on smoothly.

[QuaXum]

so hows the progress bro?

[NC39]

Hi bro Quaxum, I did not fix it. Lazy and had a long holiday trip.

Left my bike collecting dust. Anyway I had it inspect again and

this time I need to clean the piston.

[QuaXum]

might be that prob, cuz i just changed my pads on my drz, the pistons were jammed up from the brake dust. tried cleaning it but failed, so i sent to ah boy mech to do it for me. so far so gd.