Maintenance & Technical > KX450F / KX250F

Rotor / brake pad issue?

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kawi4life:
I just replaced the front brake pads on my kx250f and had a lot of trouble getting the pistons to stay compressed in the caliper. After messin around with them for a little bit I finally got the caliper on the rotor. I button'd it back up and realized there was a lot of drag when I would spin the front wheel, it wasnt free spinning like it should but the brake still worked fine. I have never had this problem before when replacing brake pads, just confused. I also realized there is play on the rotor when holding the front brake and rocking the wheel forward and back. The play is where the Circle clips ( not sure what they are called) hold the rotor in place.   Not sure whats goin on just doesnt not seem normal or safe to ride.  Any ideas whats going on? Is it normal to have some drag with new brake pads? Let me know what you think.

DoldGuy:
Kawi,
Put the bike on a stand to keep the front wheel off the ground, loosen all of the pinch bolts on the axle & spin the front wheel & apply the brake hard. Do this a couple of times & while holding the brake in snug the pinch bolts & check for any drag.

The pins are floating & designed to let the rotor flex. It's normal.
Let us know how you make out.

DoldGuy

Friar-Tuck:
 The new pads may have pushed the pistons farther in the caliper, if nothing is binding ( D'Gold Guy's post) I think I would clean & lube everything up and look for grooves in the pins.
  A lot of times dirt and rust form where the pistons have moved out of the caliper and putting new pads in pushes the pistons back in the caliper along with some crud.
  Tuck\o/

 Brake bad replacement vid:  http://www.youtube.com/watch?v=HfPqu3LMti8&feature=related

Danger4u2:
Maybe when you pushed the new pads in your brake fluid went back into the reservoir.  It should over flow out of the tiny vent but if it's plugged it could be pressured and that's why they come back out.

kawi4life:
Thanks for the advice I will check it out tomorrow and let you know.

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