Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.


Disc break pulled lever when wheel was off
#1
Hi guys
I’m need of some help by making a stupid mistake.

I setup up my wahoo KICKR and forgot to stick the spacer in the disc brake and I’ve pressed the rear lever and my pads are now in the closed position. How do I rectify this?

Thanks guys
  Reply
#2
There's a tool for this called a piston press.

Alternatively, you might be able to use a screwdriver (or the like) to push the pistons back in.
  Reply
#3
Things to note if you have to push the pistons back:

1. it's worth cleaning the area around the pads and pistons (compressed air, oil-free rag, brush and/or water) to stop contaminants getting into the bore when you push the pistons back

2. don't push the pads too far back into the bore, you only need enough space to fit the brake disk

3. if you use a screwdriver to do this, be careful not to damage the pads (BTW, the correct tool for this job shouldn't be too expensive), or try using a plastic tire lever

4. if the brake feel is spongy after you're all done, it's possible the pistons over-extended when you inadvertently pulled the lever, and you'll need to bleed the hydraulic system.

Other than that, you should find it's not a major project. Smile
  Reply


Possibly Related Threads...

Forum Jump:

[-]
10 Latest Posts
Hello everyone!
Today 01:32 PM
Help with headset preload
Today 03:52 AM
Riding in a foreign country?
Yesterday 08:00 AM
"New" 'Muddyfox' MTB - a wretched projec...
Yesterday 07:52 AM
Triathletes disqualified after crossing ...
Yesterday 07:13 AM
Chafing on the area where buttocks and t...
Yesterday 07:10 AM
Bikepacking/gravel bikes
Yesterday 07:07 AM
Where to start?
Yesterday 06:29 AM
Ever broken a bone in a bike crash?
01-26-2023 07:06 AM
Cannondale headshot boot
01-26-2023 03:43 AM

[-]
Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

[-]
Top 5 Posters This Month
no avatar 1. ReapThaWhirlwind
26 posts
no avatar 2. GirishH
21 posts
no avatar 3. enkei
15 posts
no avatar 4. ichitan
11 posts
no avatar 5. Lss555
10 posts