There is described an agricultural tractor having a three-point hitch with a top link. The tractor is provided with a lifting block adjacent the three-point hitch. The lifting block has a retractable cable which can be used to assist in the raising or lowering of the top link, to allow for easy manipulation of the top link by an operator. In addition, the cable of the lifting block can be used to assist in the coupling of a rear attachment system of the tractor with relatively heavy implements.