brake fluid question???

i had to remove the brakes on my bike and the fluid leaked out. im wondering what brake fluid to get. do i have to go to a dealer to get the brake fluid or can i use car brake fluid or something an automotive store would have? also do i need to bleed the brakes before refilling them? my bike is a wr426f that has yz426 front brakes.:bonk:

DOT 4 fluid is what's recommended.

If fluid leaked out, odds are that, yes, you'll have to beed the system to make it work like it should.

do they sell dot 4 at an auto parts store you think or not?

There's a good chance they do. :bonk:

i went and picked up some dot four at the auto parts store. nothing special, it says its heavy duty high temp 475 degrees. the brand i got is brake best select. says its formulated for abs, disc, and drum brakes.

Removing your brakes shouldn't allow any fluid to leak.

Can you tell us exactly what you were doing and how / where it leaked?

i removed the hoses

i didnt actually remove the rear brakes just the hose, and i removed the hose and the front brake along with the forks. i swapped the forks with yz426f ones and just left the brakes attached to the forks. the fluid came out of the hoses. i need to bleed the brakes and add fluid. my back one still works but the front doesnt at all. never done it before

There are a lot of walkthroughs for bleeding the brakes on the web. Some are very difficult to do.

http://tinyurl.com/yjwpkym

Most shops charge about 20 bucks per to bleed them.

Go back to the auto parts store and get a one man brake bleeder. Costs less than $10, just a one way valve. Open master cylinder and bleed screw and start pumping. Just make sure you never let the MC run dry. Easy, might take you 10min.

i think the master cylinder is pretty much empty now. if i pull the lever in it does nothing. no tension almost. is that normal with it not having any fluid in it?

i think the master cylinder is pretty much empty now. if i pull the lever in it does nothing. no tension almost. is that normal with it not having any fluid in it?

Yes it is

do i need a certain size tool to bleed the brakes to pump the air out. you said to go to the auto parts store and i was wondering if i had to get the exact size of the bolt fitting on that tool to fit the bolt on the bike. also i need to fill the resovoir with fluid while bleeding right? thanks

:bonk:

never mind i read your post agian and you said to get a man brake bleeder and dont let the fluid run dry. thanks

i bought a vacum type bleeder and ended up not using it. i pumped the lever and bubbles of air would come out and i did that tilll they stopped. also put a zip tie to the lever tp hold it down for a while. my results arent great the brakes are still kind of spogey. the front brake works at least now alright. i think the back one can lock the reaar wheel. the front could still use some improvement though. should i try the vacum bleeder? do i just attach it to the front brake bleed nipple and start pumping?

i bought a vacum type bleeder and ended up not using it. i pumped the lever and bubbles of air would come out and i did that tilll they stopped. also put a zip tie to the lever tp hold it down for a while. my results arent great the brakes are still kind of spogey. the front brake works at least now alright. i think the back one can lock the reaar wheel. the front could still use some improvement though. should i try the vacum bleeder? do i just attach it to the front brake bleed nipple and start pumping?

If by vacuum bleeder you mean the one way valve attached to some brake bleeding line then yes, just attach to bleed nipple, crack it open and start pumping. Be sure to not let the mc run dry and keep pumping untill no more air bubbles are coming out the nipple.

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