And differentialcannot onlydeal with the problemabove, but also play an importantrolein enhancingmotor vehicle'ssteeringperformanceandoperatingstability.
Among the problems discovered by inspectors were "four undercarriage frame cracks including at the drive axle, at the cross member for the motor mounts, and at the differential and over the right front steering axle, " according to a letter sent by Berwick to Federal Motor Carrier Safety Administration Administrator Anne Ferro.