SB-08-29-12
Service Bulletin/Repair Instructions
NABI: RESETTING THE RETARDER TO THE HIGHEST RETARDATION TORQUE OF 1,600 LB-FT, IS BASED ON ENHANCING WEARABLE SURFACE SERVICE LIFE OF AIR DISC BRAKE COMPONENTS, MODEL 2009 NABI 35-LFW. *PE
Vehicle report
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-08-29-12
NABI: RESETTING THE RETARDER TO THE HIGHEST RETARDATION TORQUE OF 1,600 LB-FT, IS BASED ON ENHANCING WEARABLE SURFACE SERVICE LIFE OF AIR DISC BRAKE COMPONENTS, MODEL 2009 NABI 35-LFW. *PE
Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.