SQ1: Height limit switch of the main lift
SQ2: Height limit switch of the wheel free lift
SQ3: Height limit switch for safe lowering
YA: Pneumatic valve for the main lift
YV1: Solenoid unloading valve
YV2: Solenoid valve for the main lift
YV3: Solenoid valve for the wheel free lift
Uncrossed wire
Connector