VN 4.003: 1. Coaxial clutch release mechanism with a release bearing position sensor; 2. Gearbox control system wiring harness; 3. Gear shift center shaft position sensor; 4. Oil tank ventilation; 5, Hydraulic cylinder; 6. Clutch speed sensor; 7. Hydraulic system pressure sensor; 8. Vehicle speed sensor; 9. Pressure accumulator; 10. Oil reservoir; 11. Valve block; 12. Hydraulic cylinder control valves; 13, Clutch control valve; 14. Hydraulic pump; 15. Clutch control tube; 16. Central gear shift rod
Such gearboxes are called Sprintshift transmission. These gearboxes replaced the previously produced automatic transmission type W4A02S.
It should be noted that automated gearboxes are not compatible with some start-stop systems.
The use of a hydraulic drive allows the gearbox to be used both in a fully automatic mode, when the driver does not participate in the gear shifting process, and in a semi-automatic mode, when the driver selects the gear using the gear selector. In this case, the process of disengaging the clutch and actually changing gears also occurs without the driver's participation.
VN 4.004: 1. Valve block; 2. Nut for fastening the oil supply line under pressure; 3. Drain line branch pipe; 4, Oil filter in the pressure channel; 5. Clutch control channel output; 6. The actuator that rotates the main shaft of the gear shift mechanism; 7. Solenoid valve (Y90) that controls the pressure supply to the clutch control mechanism; 8. Solenoid valve (Y91) for pressure relief in the hydraulic drive of the gearbox control (upon reaching the extreme position of each of the hydraulic actuators); 9. Solenoid valve (Y92/1) for engaging 1st, 3rd, 5th gears; 10. Solenoid valve (Y92/2) for engaging 2nd, 4th, 6th gears and reverse gear
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