Leaf spring assembly: leafRecall 76V-004 · Mack vehicles
MACK TRUCKS, INCORPORATED recall 76V-004 covers 54 Mack vehicles for a leaf spring assembly: leaf problem, reported to NHTSA on January 13, 1976.
Source: NHTSA recall 76V004000 and manufacturer quarterly reports. Started by the manufacturer.
The problem
The fix
The remedy has not been described yet.
MACK CAMPAIGN NO SC071.TRUCKS EQUIPPED WITH SWTL-56 SERIES REAR AXLE.POSSIBILITY THAT THE REAR SUSPENSION WAS ASSEMBLED WITH AN INCORRECT TRUNNIONTHAT HAS A RADIUSED SPRING SEAT, CREATING A LINE OF CONTACT BETWEEN THE SPRINGSEAT AND THE SPRING ITSELF, SUBJECTING THESE COMPONENTS TO HIGH STRESSCONCENTRATIONS.IF THIS CONDITION EXISTS IT COULD ULTIMATELY LEAD TO PREMATURESPRING FAILURE, AND PERMIT AXLE ASSEMBLY DISLOCATION THAT COULD RESULT IN LOSSOF VEHICLE CONTROL WITHOUT WARNING TO THE DRIVER, WITH POSSIBLE VEHICLE CRASH.(CORRECT BY INSPECTING AND INSTALLING SPECIFIED SPRING TRUNNIONS THATINCORPORATE FLATSPRING SEATS).
Recall repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.