Audi TT Roadster, Обучение по обслуживанию

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Oil pressure side
Oil return line
Control pressure
Intake side
Convertible top closing cycle
When closing the convertible top, the hydraulic
pump turns anticlockwise and the two-way valve
now closes on the opposite side. The hydraulic
pressure flows through the check valve to the
hydraulic cylinder beneath the piston rod and
pushes the piston rod upwards, closing the
convertible top.
At the same time, pilot pressure is applied to the
pressure-controlled check valve on the pressureless
side through a bypass port from the pressure side. If the convertible top switch is still being actuated
when the convertible top reaches its end position,
the hydraulic pressure continues rising to a
maximum of approx. 160 bar.
A spring loaded valve opens and the excess
hydraulic pressure flows back into the oil tank.