PAB031-2019
Service Bulletin/Repair Instructions
Thomas Built Buses Product Awareness Bulletin on Allison 2550 PTS w/ Detroit Engine (DD5)
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.
PAB031-2019
Thomas Built Buses Product Awareness Bulletin on Allison 2550 PTS w/ Detroit Engine (DD5)
SB-35-01
FREIGHTLINER: THE INSTRUCTIONS TO LUBRICATE THE WHEEL BEARINGS ON A REAR DRIVE AXLE. *RM
SB-41-1
THOMAS BUILT: NEW TIGHTENING PROCEDURE HAS BEEN DEVELOPED FOR HALF ROUND U JOINT BEARING STRAP CAPSCREWS, WHICH SHOULD EXTEND U JOINT LIFE. MODEL YEARS UNKNOWN. *PE
SB-49-3
THOMAS BUILT: OCCASIONALLY THE AMBER DIESEL PARTICULATE FILTER (DPF) STATUS LIGHT ON THE DRIVER MESSAGE CENTER MAY COME ON, INDICATING THAT THE EXHAUST SOOT LEVEL IS ELEVATED. SAF-T-LINER CS MODEL. NO MODEL YEARS LISTED. *PE
SB-42-2
THOMAS BUILT: RESERVOIR INTERNAL/EXTERNAL CHECK VALVE. CONTAMINATION IN THE WET/SECONDARY RESERVOIR, P/N 12-15476-00, MAY CAUSE THE INLINE CHECK VALVE TO BECOME CLOGGED OR STUCK CLOSED. THIS CAN RESULT IN INSUFFICIENT AIR BUILDUP. NO MODEL YEARS LISTED. *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.