u

Mack U (1973) – 78V171000

Vehicle recall defect – Deficiencies, In The Form Of Forging Laps, Cracks And Excessive Decarburization During Heat Treatment, Exist In The Steering Knuckles. Stresses Imposed With Integral Hydraulic Power Steering May Lead To A Failure In The Area Of The Steering Arm Attaching Boss. This Type Of Failure Would Cause Loss Of Steering Control.


Mack U (1973) – 77V173000

Vehicle recall defect – The Flex Blade Fans On The Involved Vehicles May Develop Cracks In The Laminated Stiffener As A Result Of Fatigue During Operation. If Such A Condition Exists And The Cracks Go Undetected, Continued Operation Could Cause Pieces Of The Stiffener To Break Off.