Polaris 2001 High-Performance Snowmobile Service Manual (PN 9916690), Page 245Get this manual
CHASSISBRAKESFINAL DRIVE Liquid Cooled Brake System Liquid Cooled Brake Cleaning and Inspection
Check all parts for wear or damage and replace any found to be defective1Clean all parts with denatured alcohol and wipe dry with clean, lint free cloth2Using compressed air, blow out the drilled passages and bores3Inspect casting cylinder bore for scoring, pitting or corrosionA corroded or deeply scored casting should be replacedLight scores and stains may be removed by polishing with crocus cloth onlyUse finger pressure and rotate the crocus cloth in the cylinder boreDo not slide the cloth in and out of the bore under pressureDo not use any other kind of abrasive cloth4Check piston to see if it is pitted, scored or wornIf so, discard and replace the pistonCAUTION: Do not attempt to polish or sand piston5Clean piston with denatured alcohol and wipe dry with clean, lint free clothUsing compressed air, blow dry6Check inlet and bleeder hole threads for damage7Inspect seat insert for damage and replace if necessary
Liquid Cooled Brake Assembly