NAVISTAR issued a recall on the 34003800,4700, and 4900 models

On certain vehicles, the rear hydraulic brake hoses that drop from the frame down to the axle for ABS brake systems may be either too long or too short. On vehicles where the hose is too long, a chafing condition exists on suspension components, which could result in hose rupture. On vehicles where the hoses are too short, a hose separation may occur with severe suspension articulation. Premature failure of a rear drop-hose would result in the loss of the rear brakes and could cause a crash without prior warning. Correction: Short hoses will be replaced while long hoses will have a hose routing kit installed to prevent any chafing problems.