Rear brake lever no longer returns instantaneously

asmar

Member
Mar 7, 2020
17
14
Crete, Greece
Hi all,

I need some advice regarding a problem with the rear brake that I got on a Cube Stereo Hybrid 120.
The rear brake lever no longer returns instantaneously.

When I press the lever for 1-2 seconds it works ok but once I keep pressing the lever it gets stiffer and stiffer to a point that needs too much pressure and is very difficult with one finger to stop the bike.

The brake itself works, it stops the bike but is a pain to use it like this.
I tried so far to push the pistons back (there wasn't a problem), removed, and checked the pads which are fine.
It looks like the piston doesn't return fast or something like this.
I hope it makes sense in the above description.

Any suggestions?
 

asmar

Member
Mar 7, 2020
17
14
Crete, Greece
The brake lever says Shimano BL-MT401and from Cube web site:
Shimano BR-MT420/MT400, Hydr. Disc Brake (203/180) so I guess the rear is the MT400?
 

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