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.
TSIB 21-04
Service Bulletin/Repair Instructions
Technical Service Information Bulletin issued as a reminder to customers of specifically equipped older motor coaches, who performed Service Bulletin 348 in conjunction with NHTSA Recall 10V-373, to continue to inspect the SE-GI side windows for de-bonding as indicated in the maintenance manual, and repair if necessary in accordance with that Service Bulletin.
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
SB-330
Service Bulletin/Repair Instructions
MOTOR COACH INC.: MCI HAS BECOME AWARE OF FAILURES OF THE SENSORS WHERE THE SYSTEM IS CONSTANTLY SIGNALING AN OBSTRUCTION BEHIND, WHEN NO OBSTRUCTION EXISTS. THE ORIGINAL SENSOR INSTALLED IN THE COACH WAS TOO SENSITIVE AND WOULD SOMETIMES SENSE THE REAR BUMPER AS AN OBSTRUCTION. *PE
SB-317
Service Bulletin/Repair Instructions
MOTORCOACH INC.: AN UPGRADE TO THE SOFTWARE PROGRAM IS REQUIRED ON CERTAIN MC1 E4500 AND J4500 COACHES EQUIPPED WITH ALLISON GEN IV B500 TRANSMISSIONS. MODEL YEARS UNKNOWN. *PE
SB-3012
Service Bulletin/Repair Instructions
MCI: ENGINE PAN PROTECTION TUBE ASSEMBLY. MODEL YEARS UNKNOWN. *PE
SB-3007
Service Bulletin/Repair Instructions
MOTORCOACH: PRODUCT IMPROVEMENT CHANGE TO THE BRAKE CHAMBERS USED ON THE FRONT AXLE OF E4500/J4500 COACHES HAVING EX225 DISC BRAKES. MODEL YEARS UNKNOWN. *PE UPDATED 7/10/09. *PE
SB-3010
Service Bulletin/Repair Instructions
MOTORCOACH: A DESIGN CHANGE TO THE DRIVER'S AND PASSENGER'S WINDSHIELD BLIND INSTALLATION. THIS DESIGN CHANGE WILL MINIMIZE BLIND RATTLE DURING COACH OPERATION. MODEL YEARS UNKNOWN. *PE
SP-7-61
Service Bulletin/Repair Instructions
MOTOR COACH: A POTENTIAL FOR SENSOR FAILURE ON COACHES EQUIPPED WITH REAR SENSING SYSTEM. FAILURE MAY BE ADVISING DRIVERS THAT THERE MAY BE AN OBSTRUCTION WITH THREE (3) FEET OF REAR OF COACH, WHEN THERE MAY NOT BE. MODEL YEARS UNKNOWN. *PE