brake caliper trouble

4 replies to this topic
  • hondaman2239

Posted July 09, 2007 - 11:57 AM


I was changing my tires, took off the wheel and the front brake calipers are now stuck together so i cant get the rotor between them. tried prying them apart. I bled the brakes, then tried to pry them apart.

After bleeding the brakes i now have no pressure at all when i squeeze the front brake lever. bad situation.:thumbsup: :thumbsup:

  • grayracer513

Posted July 09, 2007 - 12:30 PM


Unless the pads were very nearly worn completely out, the caliper pistons should not have been stuck outward. What you apparently did to start with was to squeeze the brake while the rotor was out. But even then, you should have been able to force them back apart without opening the hydraulic system in any way.

I don't know what you mean when you say you bleed the brakes in the first place, but you have evidently introduced air into the system, and will now need to correctly purge the air from it.


Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • ben_suhard

Posted July 09, 2007 - 07:16 PM


Have you tried spraying the pistons with some WD-40 and giving them a bit of a clean(the guide bolts may need some grease too), they can get a bit gunky and tough to slide back into the seals? If worst comes to worst, the pistons can be pulled out(after you remove the brake pads) and cleaned up, but of course you'll have to bleed your brake again. Back bleeding is a good way to do your brakes, just use a syringe and hose on the caliper nipple and force the fluid backwards(can be a bit slow going) through the system.

  • hondaman2239

Posted July 09, 2007 - 07:21 PM


thanks for your help guys. I got the wheel back on, just no pressure on the brake. I am going to try grays method of getting the air out of the lines.

thanks again

  • ben_suhard

Posted July 09, 2007 - 07:35 PM


Once you're done(or any other time in the future) and you think the brakes may be a bit soft still, you can squeeze any little air bubbles out by putting a zip-tie around the front brake lever and handlebar, and leaving it like that overnight. Make sure the bars are turned so that the line is not higher than the master cylinder.

Related Content


Yamaha YZ450F 2017 by Chris.GVS

Yamaha YZ450F 2017
  • * * * * *
  • 1 review
  • Last review by Tommyk_55
  • On January 15, 2017

BIGBORE FOR YZ450F 2006? by Taattie94

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 1 reply

2016 YZ450 by CaptainKnobby

Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies

Chubby dad, looking at bikes , First trip to the orange/black forum ! by Slow_ride

Dirt Bike   Make / Model Specific   KTM   250-530 EXC/MXC/SXC/XC-W/XCR-W (4-Strokes)
  • Hot  28 replies

Wilson the Blue Privateer by jetfuel

Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  50 replies

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.