08-15-2021, 08:41 AM
One of the first things to check would be the rear brake operation, here is a clip to show what it should look like close-up;
https://www.youtube.com/watch?v=nFcrdAEVAQY
The rear brake caliper also slides on two bushes ( with the rubber covers ) that need to be clean and lubricated with silicon grease to allow for easy travel on them ( they retract from the disk ).
The part that is responsible for retracting the brake pistons is the first sealing o-ring, the o-ring that you can see first is the dust cover for the second sealing o-ring behind it, so there are two grooves per piston in the caliper.
The grooves should be free of buildt up dirt to enable the o-ring to be pushed one way and to return to their original shape when the pressure is released.
Over time as the brake pads wear down the pistons migrate towards the disk and the o-rings allow for that by slowly slipping their position with respect to the pistons.
If your bike has abs brakes the procedure is a bit more involved ( removal of possible air in the lines ) but basically similar.
So to clear the brake pads you have to look at what specifically is not happening as it is intended, then take appropriate action, changing fluid, inspecting calipers and pistons for correct movement or whatever is the case, hope this helps.
https://www.youtube.com/watch?v=nFcrdAEVAQY
The rear brake caliper also slides on two bushes ( with the rubber covers ) that need to be clean and lubricated with silicon grease to allow for easy travel on them ( they retract from the disk ).
The part that is responsible for retracting the brake pistons is the first sealing o-ring, the o-ring that you can see first is the dust cover for the second sealing o-ring behind it, so there are two grooves per piston in the caliper.
The grooves should be free of buildt up dirt to enable the o-ring to be pushed one way and to return to their original shape when the pressure is released.
Over time as the brake pads wear down the pistons migrate towards the disk and the o-rings allow for that by slowly slipping their position with respect to the pistons.
If your bike has abs brakes the procedure is a bit more involved ( removal of possible air in the lines ) but basically similar.
So to clear the brake pads you have to look at what specifically is not happening as it is intended, then take appropriate action, changing fluid, inspecting calipers and pistons for correct movement or whatever is the case, hope this helps.