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Look close at the caliper pistons , with the pads removed and caliper in hand , AND hydraulic from bike attached .
When you put pressure to the pedal , you should see piston move forward , - and when you release pressure , YOU SHOULD SEE PISTON RETRACT A LITTLE ,(maybe 0,1 mm. ), - if it dosnt retract , it is time for rebuilding the caliper !
It is the special form on the seal and grove which retract the piston .
When you put pressure to the pedal , you should see piston move forward , - and when you release pressure , YOU SHOULD SEE PISTON RETRACT A LITTLE ,(maybe 0,1 mm. ), - if it dosnt retract , it is time for rebuilding the caliper !
It is the special form on the seal and grove which retract the piston .
