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-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