MACK issued a recall on multiple vehicle models

On certain vehicles, the return springs on the accelerator pedals are made of stainless steel or electroplated music wire. The design fatigue stress of the stainless steel springs is in a range that would predict that some failures would occur. The music wire springs can fail due to stress risers created by electrical arcing during electroplating. Correction: Accelerator pedals will be replaced with ones equipped with return springs manufactured of music wire with one additional coil on each spring and with an organic coating, eliminating electroplating.