A mounting surface (26) of an agricultural work vehicle (10) power take-off system (24). The PTO device (24) includes a drive shaft (28) and a mounting surface (26). Furthermore, the mounting surface includes a plurality of threaded apertures (34, 36, 68 70) for coupling an auxiliary system (27) to the PTO device (24), and a pilot (32) configured to engage with a complimentary pilot (56) of the auxiliary system (27) to facilitate alignment of the PTO device (24) with the auxiliary system (27). The mounting surface (26) and the auxiliary system (27) have the same mounting configuration.
