Intake air duct for an internal combustion engine of an agricultural vehicle

An agricultural vehicle comprising an engine compartment, a cooling package mounted near a forward end of the engine compartment, and an engine mounted near a rearward end of the engine compartment;

• wherein the cooling package includes a heat exchanger, the heat exchanger is movable between an operating position and a cleaning position, the engine is fitted with an intake air duct leading from the engine to the forward end of the engine compartment, the intake air duct is configured to enable intake air to flow through the intake air duct while bypassing the cooling package, and the intake air duct is articulated to accommodate movement of the heat exchanger between the operating and cleaning positions of the heat exchanger;
• wherein the intake air duct is formed of two rigid sections that are pivotable relative to one another, a first section of the two rigid sections is stationarily mounted in the engine compartment, and a second section of the two rigid sections is pivotable from an operating position of the second section to a cleaning position of the second section to accommodate movement of the heat exchanger from the operating position of the heat exchanger to the cleaning position of the heat exchanger, respectively;
• and
• wherein the second section is biased away from the cleaning position of the second section and toward the operating position of the second section.