VEHICLE DESCRIPTION: CEMENT MIXERS EQUIPPED WITH RIDEWELL FRONT AIR RIDE SUSPENSIONS. THE HANGER FRONT SUSPENSION IS WEAK AND CAN FAIL.
THE EQUALIZING BEAM SHAFT OF THE TANDEM AXLE SUSPENSION WERE MANUFACTURED FROM AS-ROLLED SAE4140 STEEL RATHER THAN THE SPECIFIED ANNEALED SAE4140. THESE SHAFTS CAN FRACTURE INSIDE THE BEAM AT THE TOE OF THE WELD.