User manual HAYES DISC BRAKES CALIPER REPAIR445-14573B

[. . . ] Note: For the G1 caliper, remove the banjo bolt using a 4mm Allen Wrench- but leave the banjo attached to the hose - that way you don't have to replace the compression bushing when you are all done. Note: For the G2 caliper, remove the hose connection using a 10mm open-end wrench. Step2 G1 Caliper Hose Assembly 3. [. . . ] Remove the piston and square seal from the opposing caliper half in the same way. Then rinse each part with isopropyl alcohol. Be sure to clean the caliper through all of the holes. Wipe down each part to remove the residue. Then use compressed air to blow dry and remove all of the remaining dirt, etc. For both caliper halves, be sure to blow compressed air through both the bleeder hole and the transfer port, and all around the square seal groove. Note: Take extra care to get the square seal grooves free of any hair, dirt, scratches, etc. Begin re-assembly of the caliper by lightly lubricating the new square seals with DOT 4 or DOT 3 brake fluid and installing the new seals in the caliper halves. With your fingers, rub DOT 4 or DOT 3 brake fluid all around the seal. Carefully push the square seal into its seal groove ­ making sure that the seal is worked into the groove all of the way around - and that it is pushed all of the way to the back of the seal groove. Put a coating of DOT 4 or DOT 3 brake fluid all around the piston as a lubricant, and carefully push the piston into the bore, past the seal, until it seats at the bottom of the bore. Note: The piston should push in easily, if it doesn't, take the piston out and again push the square seal all of the way to the back of the groove and then try again. [. . . ] Install the hose connection back onto the caliper. Reattach the caliper to the frame or fork and bleed the system. [. . . ]