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 22-03
Service Bulletin/Repair Instructions
Technical Service Information Bulletin describing the replacement of seating backrest attachment hardware with the addition of a mechanical lock nut on specifically equipped buses manufactured prior to model year 2020.
TSIB 21-01
Service Bulletin/Repair Instructions
This Technical Service Information Bulletin (TSIB) describes an update from Meritor for the bolt torque application requirements on hub-to-rotor bolts for the front, drive and tag axles, on specific coaches equipped with Meritor EX225 disc brakes, on either Conventional, PreSet or Unitized Wheel-End hubs.
SB 3139
Service Bulletin/Repair Instructions
This Service Bulletin provides a checklist of actions to perform on a daily, weekly and monthly basis for parked coaches before they are considered ready for driving.
P08-54
Service Bulletin/Repair Instructions
This Procedure outlines the steps to install a relief valve on the air compressor for coaches equipped with DD13 engines.
SB 3120
Service Bulletin/Repair Instructions
This Service Bulletin informs owners of the procedure to clean the batteries and reapply corrosion inhibitor every 6000 miles or 3 months, whichever first occurs.
SB-407
Service Bulletin/Repair Instructions
MOTOR COACH INDUSTRIES (MCI): RED 185 DUROMETER POLYURETHANE BUSHINGS WERE REPLACED WITH 288 POLYURETHANE BUSHINGS IN SHOCK ABSORBERS THAT IN COLD TEMPERATURES, WILL FAIL, CAUSING ABSORBER STUD TO BREAK, AT BUSHING, AND COACH IS NOT OPERATIONAL DUE TO RISK OF DAMAGE TO SUSPENSION COMPONENT. MODEL D SERIES. *PE
SB 396
Service Bulletin/Repair Instructions
This Service Bulletin informs customers that MCI was notified by Cummins Inc. that it has released Campaign C1344 that addresses a calibration change, which Cummins advises will improve the engine and aftertreatment reliability on Cummins ISX engines in model year 2011-2013 MCI D model coaches, model year 2011-2013 MCI E4500 model coaches and model year 2011-2013 MCI J4500 model coaches. This program is being performed only by Cummins Service Network and its authorized dealers, therefore, all parts and labor required for this program will be provided by Cummins.
SB 389
Service Bulletin/Repair Instructions
This Service Bulletin informs affected customers that the retention nut utilized on the Leece Neville alternator pulley installation is not maintaining the proper torque which may result in alternator bearing failure on model year 2011-2012 MCI D model coaches, 2011-2012 MCI E4500 model coaches, and 2011-2012 MCI J4500 model coaches, and that MCI will remedy the affected coaches at no cost to the customers.
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