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Mack Hmm (1974) – 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 Hmm (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 Hmm (1977) – 77V204000

Vehicle recall defect – The Involved Vehicles Do Not Conform To Federal Motor Vehicle Safety Standard Nos. 207, “Seating Systems”, And 210, “Seat Belt Assembly Anchorages”. Vehicles Equipped With Viking T-Bar Seats Have The Seat Belt Anchorage Located Under The Seat. The Tether Belt Ruptured When Subjected To The Forces Required In The Safety Test.


Mack Hmm (1977) – 77V174000

Vehicle recall defect – The Involved Vehicles Do Not Conform To Federal Motor Vehicle Safety Standard No. 209, “Seatbelt Assemblies”. Although The Seatbelts In Question Performed Marginally With Respect To The 5000 Lb. Load Requirement, Additional Testing Confirmed That The Anchor Could Fail, Allowing Either The Anchor To Slip Over The Hold-Down Nut Or The Anchor To Separate Into Two Pieces.