A road paver, particularly a small road paver, for paving a subbase layer in a working direction (a), with - a machine frame, - a traveling mechanism, - a material hopper for receiving paving material, - a paving screed for smoothing and compacting the paving material, - a transverse distribution device for distributing paving material in the working direction (a) in front of the paving screed and transversely to the working direction (a), the transverse distribution device being supported at the machine frame via a support housing, and - a height adjustment device for vertical adjustment of the transverse distribution device relative to the machine frame, characterized in that the support housing is supported at the machine frame such that it is height-adjustable via a quick coupling apparatus, wherein the quick coupling apparatus comprises at least one oblong hole with an expanded insertion portion and a sliding device, wherein the sliding device can be inserted into the oblong hole through the expanded insertion portion, and wherein the sliding device in the inserted state slides in the region of the oblong hole outside the expanded insertion portion during vertical adjustment of the transverse distribution device through the height adjustment device, and wherein the sliding device is supported in a form-closed manner in a direction perpendicular to the height adjustment in this region, wherein the sliding device comprises a sliding pin and a sliding anchor with an anchor plate, wherein the anchor plate has an extension transverse to the working direction (a) which is smaller than the expanded insertion portion of the oblong hole and larger than the oblong hole in the region of the oblong hole outside the expanded insertion portion, and wherein the sliding device is configured such that a sliding distance between the anchor plate of the sliding anchor and the component to which the sliding device is fastened can be set by a sliding distance adjustment apparatus, wherein the sliding device comprises a spacer configured such that there is always at least a minimum sliding distance, and wherein - the at least one oblong hole is arranged in a support plate of the machine frame of the road paver and the sliding device is arranged on a connection plate of the support housing, the minimum sliding distance essentially corresponding to the thickness of the support plate, or - the at least one oblong hole is arranged in a connection plate of the support housing and the sliding device is arranged on a support plate of the machine frame of the road paver, the minimum sliding distance essentially corresponding to the thickness of the connection plate. - a machine frame, - a traveling mechanism, - a material hopper for receiving paving material, - a paving screed for smoothing and compacting the paving material, - a transverse distribution device for distributing paving material in the working direction (a) in front of the paving screed and transversely to the working direction (a), the transverse distribution device being supported at the machine frame via a support housing, and - a height adjustment device for vertical adjustment of the transverse distribution device relative to the machine frame, - the at least one oblong hole is arranged in a support plate of the machine frame of the road paver and the sliding device is arranged on a connection plate of the support housing, the minimum sliding distance essentially corresponding to the thickness of the support plate, or - the at least one oblong hole is arranged in a connection plate of the support housing and the sliding device is arranged on a support plate of the machine frame of the road paver, the minimum sliding distance essentially corresponding to the thickness of the connection plate.