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.
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.
MCI-3087
Service Bulletin/Repair Instructions
Motor Coach Industries (MCI) has received field reports of the alternator bracket on 2010 and 2013 Cummins ISX engine exhibi;ting signs of fatigue and cracking. MCI is instructing customers operating a D or J4500 serues ciacg eqkyuooed wutg a 2010 or 2013 Cummins ISX engine to perform the visual inspection outlined in this Service Information bulletin.
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-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