Brake piston mobilizer
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This can be used to mobilize the pistons on a 4-piston bike brake.
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Updated at source:
Model information
- Source
- Printables
- Category
- Tools
- License
- Creative Commons — Attribution — Noncommercial — Share Alike
I thought I'd use cmh's idea to build a piston mobilizer tool, to let only one piston move, while the other 3 are held back. Doing this helps for keeping the brakes run smoothly without rubbing.
This version works quite well, but I feel that there are a few improvements necessary to make it easier to use.
I added guiding rails, as I found that for this application they make things easier.
It is important to make sure the flat area of part B is fully inserted, otherwise the piston may be pushed out too far!
The same tool can then be flipped around and used to push the piston back. repeat as needed.
The wedges work better when they are a bit flexible - then they can be used while the brake is installed. In many cases, they need to bend past the brake mount a bit.