Articulated haulers carry their hydraulic power in a different place and to a different duty cycle than an excavator, and the main pump is the component that decides whether the tip body, the steering and the brakes all have flow at the same moment. Volvo part numbers in the 11, 15 and 17 series for the A25 to A45 machines are main hydraulic pumps, not fan drive units, and we list them here rather than under the cooling fan categories so a buyer searching for a fan part is not sent a hauler main pump.This section covers replacement main hydraulic pumps for Volvo A25D, A25E, A25F, A25G, A30, A35, A40 and A45 articulated haulers, plus loader auxiliary and steering pumps. Every unit is bench checked, photographed against your order and packed in a wooden case. Confirm fitment by the number cast on your pump and the machine serial prefix, since Volvo changed pump specifications across series. See also our pump buyer and specification guide.