PB_567
Service Bulletin/Repair Instructions
To improve customer experiences by eliminating most needs for an engineering review, this service bulletin clarifies the upgrade procedure from PMA300 to PMA500 governors. Two options are given. The first option applies only to vehicles that do not have a PUC pump and are upgrading from a PMA300 to a PMA500 governor. The second option can be used for any kind vehicle that is upgrading from the PMA300 to the PMA500 governor.