Front Brake Caliper Overhaul
Reassembly - 1-piston caliper type
Apply a thin coat of rubber grease to the new piston seal (A), then install it into the groove in the caliper body.
Apply the brake fluid to the new piston boot (B), then install it into the groove in the caliper body.
Apply the brake fluid to the outer surface of the piston, then set the piston in place on the caliper body.