13. BRAKE SYSTEM MXU 250R/300R Push the piston dust seal inward to remove. Dust Seal Inner Oil Seal Pushing the piston oil seal outward to remove it. Clean the seals groove with brake fluid. Be careful not to damage the piston surface. INSPECTION Inspect the caliper cylinder wall and piston surface for scratch, corrosion or other damages. If any abnormal condition is noted, replace the caliper. ASSEMBLY Clean all removed parts. Apply silicon grease to the piston and oil seals. Lubricate the brake caliper cylinder inside wall with brake fluid. Install the oil seal and dust seal. Install the brake caliper piston with grooved side facing out. Install the piston with its outer end protruding 35 mm beyond the brake caliper. Wipe off excessive brake fluid with a clean shop towel. 13-10