2001-2006 Honda TRX 300EX Sportrax 300EX Factory Service Manual, Page 277Get this manual
BRAKE SYSTEM ASSEMBLY Replace the dust seal and piston seal with new DUST SEAL
oneReplace the caliper and bracket pin boots they are worn, deteriorated or damagedApply silicone grease to the boot inner surfaceBe sure hat each part is free from dust or dirt before reassemblyCoal the new piston seals with clean brake flu idCoat the new dust seals with silicone greaseInstall he piston seals end dust seals into the groove of the c61iper bodyCoal the caliper pistons with clean brake fluid and install them into the caliper cylinder with their closed ends facing the padNote the insaliaion rJif6Ction of tile
pad springBRACKET
Install he pad spring int the caliper bodyApply silicone grease to the boot inner surface then install themInstall the bootsconical washer and caliper bracketApply locking agent to the slide pin threads