Brake Bleed Instructions for Motorcycles and ATVs: Bleeding

[Tja1300]

Do you guys have a video for doing a rear master cylinder rebuild or replacement?  I'd like to re-do my brakes but I've never done it before...

[RockyMountainATVMC]

@Tja1300 - We don't, but it is a good idea. I don't think  I will get to it for a while though.

[123michaeln]

i have a 2003 yz125 and i have dont this multiple times except i do it with out the brake bleeding pump and i can not get it to work i have no brakes what so ever what should i do in this situation?!?!?

[RockyMountainATVMC]

@123michaeln - the bleeder helps, but if you have air in the master cylinder it is hard to get it to bleed. I would suggest getting a brake bleeding pump. We sell a mighty vac which will do the trick.

[123michaeln]

@RockyMountainATVMC ok i looked on your website but which one is it im getting a million items that come up

[ben1996ful]

so after you see new brake fluid coming out of the hose then you know it has got all new oil in the system right

[RockyMountainATVMC]

@ben1996ful - correct

[354murraymark]

is there any other way to prime it without a syringe or an expensive pump brake bleeder?

[RockyMountainATVMC]

@354murraymark - a syringe with a piece of hose is cheap.

[354murraymark]

hey i did everything that your video said to do, and i have a tusk brake bleeder, and i have no brakes at all? i topped the resivour when i put the cap back on though so i dont know if thats it?

[RockyMountainATVMC]

@354murraymark - If the master cylinder has too much air it won't create enough pressure to pump the oil. If that is the case, you most likely will need to pump the oil through to prime it. You need a syringe or brake bleeding pump to do this (pull the oil from the caliper bleed screw).

[sinaloco925]

arent you supposed to close the bleeder valve when pressure is not applied to the lever/pedal?

[RockyMountainATVMC]

@sinaloco925 - The Tusk brake bleeder tool has a one way check valve. This prevents the caliper from drawing air back in. So if you have this tool, you don't have to close the bleeder each decompresson of the lever.

[38HondaRacer]

hey my front brakes are real spongey and i replaces pads and they are still real soft.... should i put new fluid in

[RockyMountainATVMC]

@38HondaRacer - try new fluid. you may have some air in your line. If it still does it, it may be time to upgrade to steel braided brake lines. The stock lines wear out and start to flex, making them feel spongy.

[DjViceeeee]

Hey, can you make a video on how to adjust the rear suspension, and how to adjust sag? I would really appreciate it. thanks :)

[JuicyFruitFresh]

When do brakes require Re-Bleeding? if they do.

[RockyMountainATVMC]

@JuicyFruitFresh - Refer to your manual. Some guys that heat up brakes bad change the oil often.

[tyler53535]

K im trying to bleed my brakes on my 2004 KTM SX 85 but nothing is coming through the nipple, i don't have a hose so i pump the brakes, then hold the brake in and open and close the nipple, but nothing comes out, i checked the resevor and its next to full, what could be wrong?

[RockyMountainATVMC]

@tyler53535 - You either have a wore out seal in your master cylinder, or you have major air in it. You need a brake bleeder vacuum pump to pull it through. If that doesn't work, time to rebuild the master cylinder.

[MyUnderSlungLink]

@tyler53535 Same thing happened to my KX125 i bled the brakes and it had soooo much air in it, so i bled it and all this green crap came out, dunno what is was but the brakes still never worked so i rebuilt the master cylinder and caliper, and replaced the hose.

[tyler53535]

@MyUnderSlungLink Ya i found out that my entire system was shot. the caliper was seized the hose had a leek and the master cylinder was shot as well, all because the guy who had it before me, didn't fix the leaking hose.

[chem6269]

yes, should be on the right side, lower clutch cover. Or just drain all the oil and put in recomended amount

[jdirtbiker1]

hi i have a question about my yz 125

the radiator fluid is blue and my transmition is not full of oil is thier a cheack bolt some where