Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
SB 3118
Service Bulletin/Repair Instructions
This Service Bulletin informs affected owners of 1997-2013 E4500 and 2001-2015 J4500 model coaches equipped with Rear Axle Steering (RAS) system of the importance of maintaining tag axle caster, and provides the procedure to adjust the caster, if necessary.
SB 3077
Service Bulletin/Repair Instructions
This Service Bulletin informs affected customers that MCI was notified by Shaw Development that the diesel exhaust fluid (DEF) tank cap requires routine cleaning to prevent the potential for crystallization build up at the vent, which may result in potential vacuum issues which could result in collapsing of the tank walls on MCI D model coaches, MCI E4500 model coaches and MCI J4500 model coaches.
SB-390
Service Bulletin/Repair Instructions
MOTOR COACH INC: DRIVE AXLE SUSPENSION SUPPORT STRUCTURE MAY ACCUMULATE WATER CAUSING SUPPORT STRUCTURE DAMAGE DUE TO EXPANSION, IN FREEZING TEMPERATURES, WHILE COACH IS BEING OPERATED. MODELS E4500, J4500. NO MODEL YEARS LISTED. *PE UPDATED 12/10/12. *PE
SB-367
Service Bulletin/Repair Instructions
MOTOR COACH INDUSTRIES: ON SOME COACHES, WATER MAY MIGRATE ONTO/INTO THE TRANSMISSION AND/OR THE FILL TUBE, THROUGH THE BREATHER VENT THAT IS LOCATED ON TOP OF TRANSMISSION. NO MODEL YEARS LISTED. *PE
SB-357
Service Bulletin/Repair Instructions
MOTOR COACH INDUDSTRIES: INFORMATION ON REPLACING THE COOLANT PUMP THAT MAY HAVE A PROBLEM. *RM
354
Service Bulletin/Repair Instructions
MOTOR COACH INDUSTRIES SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. THERE MAY BE A HARSH DOWNSHIFT, RPM FLARE, OR THE TRANSMISSION MAY LOCK. *RM
SB-3043
Service Bulletin/Repair Instructions
MCI: TAG UNLOAD VALVE ASSEMBLY. EFFECTIVE WITH UNIT NUMBER 65614, MCI HAS MADE DESIGN CHANGES TO THE TAG UNLOAD VALVE ASSEMBLY INSTALLATION ON SOME MODEL COACHES. THE LONGER LIFE VALVES WILL IMPROVE THE DURABILITY OF THE TAG UNLOAD VALVE ASSEMBLY. MODELS E4500/J4500 SERIES. NO MODEL YEARS LISTED. *PE