General > In General...
Crappy brakes on my 02KX250
gowen:
Bandit, that sounds like you may have a small leak in your line, which usally indicates the calipers needing rebuilding. I do know my KX500 had horrible brakes for awhile and I thought I had bled them throughly, but it ended up having some air in the lines. I imagine that is the problem, but I would rebuild it anyway, just to be sure. WHat year is your KX?
Bandit9:
The KX is a 2002. Rebuilding the caliper, hummm.....never done that before. How involved is this? Costs? Thanks for the help guys.
KXcam22:
Bandit,
I think a one or two finger lockup should be about standard braking power you should expect on a KX. For a 2002 I doubt that you need to rebuild anything (but don't rule it out). As everyone else has mentioned, it sounds like you have some air in there. Sometimes it is pesky to get out. Maybe try hanging the caliper overhead, tap the lines and master cylinder with a hammer (lightly) and leave for a hour before bleeding. That should get the air out. Hope this helps. Cam.
Bandit9:
Thanks Cam. I am going to bleed them again tonight.
KaTooMer:
--- Quote from: Bandit9 ---Rebuilding the caliper, hummm.....never done that before. How involved is this? Costs?
--- End quote ---
It's pretty easy, actually. Rebuilding the capliper is really just replacing the pistons and/or piston seals. The two pistons, or "pucks" as I like to call them, aren't really held in there by anything except the seals. With the caliper removed, grab the front brake lever and let it push the pucks as far out as they can go. Drain the fluid, then yank out the pucks (use something that doesn't bung up the pucks if you plan to continue using them, and prepare to get some brake fluid on you even though you thought it was all out of there). You can replace the pucks and the seals together, or just the seals. Unless you see something noticeably wrong with the pucks, I'd just replace the seals and see if that helps (and this would be after you try all the various bleeding techniques). The part numbers are on buykawasaki.com. Looks like the pucks are about $16 each on Ron Ayers and the seals are either $8/each or $4/each, depending on which one (looks like each piston has two different seals). I'd bleed that thing everywhich way before rebuilding the caliper.
By the way, Ron Ayers has never let me down...very good delivery times and pretty good prices. You can copy part numbers from buykawasaki.com and paste them into the "part number search" box. Brings up the item and the price.
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