mack

Mack Ws (1977) – 78V170000

Vehicle recall defect – The Possibility Exists That The Aluminum Engine Rear Support Brackets May Fail Due To Metal Fatigue. This Type Of Failure Would Allow The Engine And Transmission Assembly To Dislocate Downward. This Will Result In Throttle Control Loss With The Engine Operating Continuously In The Mid To Upper Range Of The Governed Speed Range.


Mack Ws (1977) – 78V030000

Vehicle recall defect – A Design Deficiency Exists In The Air Dryer Piping In The Area Of The Pressure Relief Valve And Compressor Governor Control Link. Moisture Is Passed And Builds Up In This Relief Valve And Control Line. In Freezing Ambient Temperatures, This Moisture May Freeze, Allowing The Chassis Air System Pressure To Exceed 150 Psi. Excessive Air System Pressure Can Cause Separation Of Air Piping ConneCTIons And Air System Valve Failure.


Mack Ws (1977) – 77V205000

Vehicle recall defect – A Deficiency Exists In The Welds Securing The Rear Spring Insulator Bracket To The Axle Housing. This Is Due To Improper Positioning Of The Weld, In Relationship To The Bracket And Axle Housing. Failure Of The Welds Would Cause Separation Of The Spring Insulator Bracket And The Axle Housing, Resulting In Improper Alignment Of The Affected Axle.


Mack Ws (1977) – 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.


Mack Ws (1977) – 77V149000

Vehicle recall defect – The Front Wheel Aluminum Hubs On The Involved Vehicles May Be Subject To Cracks Which May Progress Circumferentially Around The Barrel Of The Hub. This Could Lead To A Fracture In The “Barrel” Position Of The Hub And Complete Hub Failure.


Mack Ws (1976) – 78V170000

Vehicle recall defect – The Possibility Exists That The Aluminum Engine Rear Support Brackets May Fail Due To Metal Fatigue. This Type Of Failure Would Allow The Engine And Transmission Assembly To Dislocate Downward. This Will Result In Throttle Control Loss With The Engine Operating Continuously In The Mid To Upper Range Of The Governed Speed Range.


Mack Ws (1976) – 78V068000

Vehicle recall defect – An Axle “No Brake” Condition Could Result From An Eaton Controller Internal Electrical MalfunCTIon. This Condition May Cause The Anti-Wheel Lock Valve Solenoid To Be Continuously Energized And Prevent The Brakes From Being Applied On One Of The Axles. As A Result, The Anti-Wheel Lock Warning Lamp Is Not Activated.


Mack Ws (1976) – 78V030000

Vehicle recall defect – A Design Deficiency Exists In The Air Dryer Piping In The Area Of The Pressure Relief Valve And Compressor Governor Control Link. Moisture Is Passed And Builds Up In This Relief Valve And Control Line. In Freezing Ambient Temperatures, This Moisture May Freeze, Allowing The Chassis Air System Pressure To Exceed 150 Psi. Excessive Air System Pressure Can Cause Separation Of Air Piping ConneCTIons And Air System Valve Failure.


Mack Ws (1976) – 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.


Mack Ws (1976) – 77V149000

Vehicle recall defect – The Front Wheel Aluminum Hubs On The Involved Vehicles May Be Subject To Cracks Which May Progress Circumferentially Around The Barrel Of The Hub. This Could Lead To A Fracture In The “Barrel” Position Of The Hub And Complete Hub Failure.