AIR SUPPLY CONTROL ARRANGEMENT FOR A HEAVY DUTY VEHICLE COMPRISING A LIFT AXLE

The present disclosure relates to an air supply control arrangement for a heavy-duty vehicle including a lift axle which comprises a brake chamber. The air supply control arrangement includes a control valve and a lever. The control valve has a closed first state in which pressurized air along an air supply passage is blocked by the control valve, and an open second state in which pressurized air is allowed to pass through the control valve along the air supply passage. The lever has a first portion connected to the control valve and a second portion connectable to the lift axle so that when the lift axle is raised from its ride condition to its lift condition the lever moves the control valve from the open second state to the closed first state. When the lift axle is lowered to its ride condition the lever moves the control valve back to the open second state.