ZEST BOLT Service Manual

Automated Manual Transmission 4 operation. Circuit pressure between 42 and 52 bar at 20°C. 3. Oil Reservoir: It contains the hydraulic oil of the system and bears the maximum and minimum level marks.Tutela CS Speed type oil. Warnings: Do not contaminate the Tutela CS Speed oil with impurities. Do not mix the Tutela CS Speed oil with other types of oil. Electro hydraulic Unit (2): Its functions are: To operate the CSC clutch; To operate the gear control shaft (selection and engagement movements); To maintain a hydraulic energy/power re- serve for efficient operation of the actuators. The hydraulic unit comprises: A fusion body fixed directly to the gearbox; Two proportional pressure solenoid valves EV1 (2) and EV2 (3) for gear engagement actuator control; Two on-off solenoid valves EV3 (3) and EV4 (4) for controlling the position selection ac- tuator; A proportional flow rate solenoid valve EV0 (1) for the clutch actuator control; A pressure sensor (6); A sensor (8) for measuring the engagement actuator position; A sensor (7) for detecting the selection ac- tuator position.