HEADS UP!!!

Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0
brandonxwestbrook

99 yz400f brake issues

15 posts in this topic

just changed both front and back brake lines on the bike and now I cant get the break fluid into the line. never done break work before except bleeding them. anyone know what to do or where to look?

Share this post


Link to post
Share on other sites
just changed both front and back brake lines on the bike and now I cant get the break fluid into the line. never done break work before except bleeding them. anyone know what to do or where to look?

What you mean u cant get break fluid into the line?

Share this post


Link to post
Share on other sites

have you tried backing out the allen wrench bolt that holds the line to the caliper? make sure its pieced together properly..

Share this post


Link to post
Share on other sites

got the rear working great. the front break will not bleed properly and has no pressure to it. Tried to bleed it like normal and I get nothing. as far as I know everything is connected properly. is there a trick? is it just hard because its a new line? what do you mean backwards? could there be bigger issues than I think, worst case scenario?

Share this post


Link to post
Share on other sites

remove the bleeder screw on the ft caliper, fill up the caliper with fluid, replace the bleeder screw, put the caliper back on, fill the reservior at the bars, then start the bleeding procedure.

the problem is that theres so little volume it takes forever to get the caliper full again.

this should fix your problem.

Share this post


Link to post
Share on other sites

Share this post


Link to post
Share on other sites

ah. gotcha.

question..... how come you changed the lines then if the MC was bad? im confused a lil bit. unless you just started replacing parts for a process of elimination type thing.

either way, those parts i listed should get you back in the dirt

Share this post


Link to post
Share on other sites

the brake lines both had holes. i thought the master cylinder was fine but turns out it wasnt. going to pick up the new one tomorrow off the 2000 yz426 that you suggested.

Share this post


Link to post
Share on other sites

sweet.

glad you got it sorted out!

id recommend the 450 rear MC too!

good luck, let us know how it turns out.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0