If an overhaul is indicated, usually due to fluid leakage, explore all options before beginning the job. New and factory rebuilt calipers are available on an exchange basis, making this task quite easy. If you choose to rebuild the calipers, ensure a rebuild kit is available beforehand and always rebuild the calipers in pairs. To start, loosen the lug nuts on the front wheels without removing them, then raise the front of the vehicle and secure it on jackstands before removing the front wheels. Disconnect the brake line from the caliper and plug it with a short piece of rubber hose to prevent brake fluid leakage and contamination. Remove the caliper, then place it on a clean workbench. If there are any pad retainers, note their installation before removing them and pry out the dust boot. To remove the piston, place a wood block between the piston and caliper to prevent damage, then apply compressed air to the brake fluid hose connection to ease the piston out of its bore, being cautious not to place fingers between the piston and caliper. Inspect the mating surfaces of the piston and caliper bore wall; if there is any scoring, rust, or pitting, replace the complete caliper unit. If the components are in good condition, remove the piston seal using a wooden or plastic tool to avoid damaging the bore. Remove all mounting bolts, dust boots, and sleeves from the caliper ears, then wash all components in brake cleaner or alcohol. To reassemble, ensure you have the correct rebuild kit, submerge the new piston seal in brake fluid, and install it in the lower groove of the caliper bore, followed by the boot in the upper groove. Lubricate the piston with clean brake fluid, carefully slide it through the new boot, and apply firm pressure to install it, ensuring the piston boot seats properly. If equipped, lubricate the sleeves with silicone-based grease and push them into the caliper ears, then install the boots and lubricate the caliper pins with silicone grease. Finally, install the caliper by reversing the removal procedure, replace the copper sealing washer on either side of the brake line fitting, bleed the brake system, install the wheels, hand tighten the lug nuts, remove the jackstands, lower the vehicle, and tighten the wheel lug nuts to the specified torque.
Posted by AcuraPartsWarehouse Specialist 
