Bleeding the system whenever the hydraulic system is opened, the entire system should be bled.Bleeding may also be necessary if the system has run low on fluid and air is trapped in the lines or cylinders.Bleeding can be accomplished through the use of a power bleeder (the same device used to bleed a brake system), a vacuum bleeder, or the used of a coworker.On most cars, it is impossible to pressurize the system and bleed the hydraulic lines at the same time; therefore, it is important that you have the proper equipment or someone to assist you. The typical procedure for bleeding the system follows: