@s15, @hassantahir2, to regrease caliper pins I remove both front wheels, there are two 12 mm bolts that holds slider pins at each side.
But there are metal strips placed by some ustad with slider pins (only at one side) you can see in pictures, and a bush is also placed with only one slider pin. I remove all of them and regrease slider pins.
But the piston assembly which slides on braking starts little dancing. Therefore someone placed metal strips to prevent this.
How can this dacing be removed or this is normal?