Jeep 68004467AC Brake Master Cylinder

To install the new master cylinder, bench bleed it first by mounting it in a vise and attaching bleeder tubes to the outlet ports. Fill the reservoir with brake fluid and slowly push the pistons into the master cylinder to expel air. Repeat until no more air bubbles are present. Remove the bleed tubes and install plugs in the open ports. Install the master cylinder over the studs on the brake booster and tighten the nuts. Thread the brake line fittings into the master cylinder and tighten them. Fill the reservoir with fluid and bleed the master cylinder. Test the brake system before normal use.

To install the new master cylinder, bench bleed it first by mounting it in a vise and attaching bleeder tubes to the outlet ports. Fill the reservoir with brake fluid and slowly push the pistons into the master cylinder to expel air. Repeat until no more air bubbles are present. Remove the bleed tubes and install plugs in the open ports. Install the master cylinder over the studs on the brake booster and tighten the nuts. Thread the brake line fittings into the master cylinder and tighten them. Fill the reservoir with fluid and bleed the master cylinder. Test the brake system before normal use.