A header for an agricultural harvester is disclosed. The header comprises a frame, a cooler assembly support by the frame for cooling a hydraulic system of the header, and a hydraulic system. The cooler assembly includes an air pre-cleaner for receiving air and outputting a flow of air, a rotary fan downstream the air pre-cleaner, and a heat exchanger downstream and in fluid communication with a first air output of the rotary fan. The rotary fan includes an air intake in fluid communication with the air pre-cleaner for receiving the flow of air, a first air output in fluid communication with the air intake, and a second air output in fluid communication with the air intake and spaced from the first air output. The hydraulic system is downstream the heat exchanger and receives an output flow of air from the cooler assembly.

An agricultural header includes: a header frame; at least one cutting unit carried by the header frame and including a cutting element and a driveshaft coupled to the cutting element; and a gearbox configured to drive the cutting element. The gearbox includes a gearbox output rotatably coupled to the driveshaft; and a clutch including an intermediate shaft and at least one clutch shoe rotatably coupled to the intermediate shaft and displaceable between a non-engaging position where the at least one clutch shoe does not engage the gearbox output and an engaging position where the at least one clutch shoe engages the gearbox output. The clutch is configured such that the at least one clutch shoe displaces to the engaging position when a rotational speed of the intermediate shaft reaches a threshold value.

A drive system of a header for an agricultural vehicle. The header includes a plurality of driven devices. The drive system includes a shaft configured for conveying motive power from the agricultural vehicle to the header, a gearbox configured for being located on the header and for transferring motive power to the plurality of driven devices, and a torque damper. The torque damper is operably connected in between the shaft and the gearbox. The torque damper is configured for reducing a magnitude of a torque spike.

An agricultural harvester header including a first reel, a second reel adjacent the first reel, and a variable speed reel drive between the first and second reels and operatively connected to at least one of the first reel for rotatably driving the first reel and the second reel for rotatably driving the second reel. The variable speed reel drive can include: a variable speed motor, and a multi-speed gearbox operatively coupled to the variable speed motor and at least one of the reels; a motor, and a continuously variable transmission operatively connected to the motor and at least one of the reels; or a motor, and a planetary gear drive operatively coupled to the motor and at least one of the reels.

A cutting system for a header of an agricultural machine includes a knife guard having a plurality of guards that are spaced apart by a guard pitch, and a knife section that is configured to move with respect to the knife guard for cutting crop material. The knife section includes a plurality of knives that are spaced apart by a knife pitch. The guard pitch is neither equal to nor is a whole number multiple of the knife pitch.

A crop harvesting header having a frame mounted on a propulsion vehicle has a cutter bar carrying a sickle knife and a draper transport. The draper is guided at its front edge by a longitudinally extending rail mounted on the frame for movement therewith. The cutter bar is mounted on the frame at spaced positions by spring blades attached to a fixed beam at the rear which allow up and down flexing movement of the cutter bar relative to the draper engagement member. At the center discharge the cutter bar is carried on shorter blades which are carried on a beam in front of the front draper roller. The small amount of flexing of the cutter bar combines with a balanced three piece header frame to provide effective ground following.

A system and method for reversing a rotational direction of an auger of a header. The system includes a fluid line for delivering fluid to a motor that drives the auger. A directional flow control valve is connected to the fluid line and is movable between a first state in which the valve is configured to deliver the fluid to the motor in a first fluid direction to cause the motor to move the auger in a first rotational direction, and a second state in which the valve is configured to deliver the fluid to the motor in a second fluid direction that is different from the first fluid direction to cause the motor to move the auger in a second rotational direction that is opposite to the first rotational direction.

A system and method for reversing a movement direction of a laterally extending conveyor of a draper header of an agricultural machine. The system includes a fluid line for delivering fluid to a motor that drives the laterally extending conveyor. A directional flow control valve is connected to the fluid line and is movable between a first state in which the directional flow control valve is configured to deliver the fluid to the motor in a first fluid direction to cause the motor to move the laterally extending conveyor in a first movement direction, and a second state in which the directional flow control valve is configured to deliver the fluid to the motor in a second fluid direction that is different from the first fluid direction to cause the motor to move the laterally extending conveyor in a second movement direction that is opposite to the first movement direction.

A header for an agricultural harvester comprising a chassis and an auger having a tube extending in end to end relation with and rotatably supported by the chassis. The header further includes a drive mounted adjacent a mid-portion of the auger and operatively engaged with the mid-portion of the auger for driving rotation thereof. The header thus provides an auger which is driven at its mid-portion, thereby eliminating the hydraulic complexities of augers that are driven at their ends. In addition, when the auger tube is continuous, the mid-portion driven, continuous tube auger eliminates the crop dead spot that typically occurs when split augers are deployed.

A faceplate sub-assembly for an agricultural vehicle includes a faceplate and at least one biasing element. The faceplate is configured to be connected between (i) a feederhouse defining an inlet opening through which crop material is delivered for processing by the agricultural vehicle, and (ii) a header of the agricultural vehicle. The faceplate is configured to be pivotably mounted to the feederhouse such that the faceplate is configured for lateral tilting relative to the feederhouse. The at least one biasing element has one end connected to the faceplate and another end that is configured to be connected to the feederhouse for reducing a friction force at the interface between the faceplate and the feederhouse to accommodate lateral tilting of the faceplate.