Disconnect the flexible hoses from the master cylinder and cover the hoses and fittings on the cylinder to prevent leakage of fluid from the reservoir and entry of dust, dirt or foreign matter into the cylinder.
Disconnect the steel pipelines from the master cylinder that drain fluid to the wheel cylinders of the front and rear brakes by first unscrewing the tube nuts.
Remove the cylinder by unscrewing the nuts securing it to the vacuum booster.
Install the master cylinder in the reverse order of removal. After installing the cylinder, bleed the brake system to remove air from it.