Engine cooling system having a low speed cooling package fan

A horizontal directional drilling machine comprising:

• a drilling assembly adapted to be coupled to a proximate end of a drill string and generally configured for applying a thrust and rotational force to the drill string;
• a housing having a housing length and a housing width, wherein the housing length is greater than the housing width, the housing defining a housing axis that extends along the housing length, the housing axis defining a vertical reference plane, the vertical reference plane being perpendicular to a ground surface on which the horizontal directional drilling machine is resting, the housing axis further defining a horizontal reference plane perpendicular to the vertical reference plane, the housing further including a plurality of side walls that extend along the housing length, the housing width being defined between the side walls, the housing further including a convertible hood being pivotable between an open and closed position along a hinge, the hinge being positioned at a compound angle with respect to the housing axis, the compound angle including a bevel component angle angled with respect to the vertical reference plane and a miter component angle angled with respect to the horizontal reference plane, wherein at least one of the miter component angle and the bevel component angle is between 15 degrees and 45 degrees;
• and
• an internal combustion engine positioned within the housing and coupled to the drilling assembly.