Owner Manuals for Service and Repair of FMVSS 121 Air Brake Systems

摘要

The FMVSS 121 air brake anti-lock equipment is currently found on a half million vehicles operating on the nation's highways. Approximately half of these vehicles are maintained by owner-operators who usually act as their own mechanics. Many of these owner-operators are unfamiliar with the 121 maintenance and repair procedures. Consequently the anti-lock systems may be inoperative on their vehicles during long periods of time. The objectives of this project is to develop troubleshooting manuals that make the troubleshooting so simple that owner-operators can repair their own FMVSS 121 system and thereby change the attitude that causes systems to be inoperative for long periods.