Engine Mounts System Layout 1 Right hydraulic damper 2 Right engine mounting 3 Left engine mounting 4 Left hydraulic damper 5 Vacuum supply pipe 6 Engine mount damping control actuator Two hydraulically dampened engine mounts are fitted between the engine support brackets and engine sub-frame to reduce the level of transmitted engine vibration and noise. The damping characteristics of the mounts are regulated by controlling the rate of hydraulic fluid transfer between two internal chambers. The system consists of two hydraulic mounts, with variable damping regulated by a vacuum, a control actuator, electric and vacuum lines. The vacuum, controlled by the electrical control actuator, is supplied via a distributor in the vacuum line between the vacuum pump and brake booster. The system is controlled by the EDC System.