Arrangement with a wheel and a device to deflate and/or inflate a tyre of a vehicle, particulary of a tractor

The tractor wheel system comprises a wheel with an inflation connector mounted in its rim and an inflation device mounted in the body of the wheel. This comprises a housing (14) inside the rim which contains a second air tube (11) linked to the connector and which has a transverse bore (15) across it. A third tube (12) links the inflation connector with the second tube. An inner component (21) is mounted in the housing so that it can be moved relative to it and contains a third air tube (29) which can be connected to a compressed air line (31). A control valve (9) is mounted on the second air tube. The housing and inner component form an annular chamber (25) connected to the second and third air tube. The third air tube is connected to the compressed air line by a plug-in coupling and a main valve (30).