2006 Freightliner Business Class M2 TSBs

environments.

*RM

INFORMATION ON THE RECOMMENDED MAINTENANCE PROCEDURE TO BE ADDED TO DTNA MAINTENANCE MANUALS FOR ALL MODELS WITH THESE AXLE RATINGS. IT IS RECOMMENDED THAT THESE PROCEDURES BE ADOPTED AS SOON AS POSSIBLE. NO MODEL YEARS LISTED. *PE

Camshaft timing, valve lash, injector height, and Jake Brake lash are all very important specifications that must be followed closely in order to optimize the performance and service life of any Detroit Diesel engine.

THE VALVE MIGHT BE PLUGGED WITH CONTAMINATE. *PE

THE PLASTIC ENGINE COOLANT LINE MAY NOT BE SUFFICIENT UNDER CERTAIN TEMPERATURES RESULTING IN CRACKING AND LOSS OF COOLANT. *RM

SOME TRW TAS85 STEERING GEARS HAVE BEEN EQUIPPED WITH AN INTERNAL RELIEF VALVE. THESE STEERING GEARS ARE TYPICALLY INSTALLED WITH POWER STEERING PUMPS THAT HAVE A PRESSURE RELIEF RATING GREATER THAN 2175 PSI (150 BAR). THE INTERNAL RELIEF VALVE LIMITS MAXIMUM SUPPLY PRESSURE TO PROTECT THE STEERING GEAR. MODELS FLD CONVENTIONAL, CENTURY CLASS CONVENTIONAL, COLUMBIA, CORONADO, BUSINESS CLASS M2 AND CASCADIA. NO MODEL YEARS LISTED. *PE

This bulletin replaces the version dated 5/31/2017. Information is added about the BCT-460DTNA PowerNet Assessment Tool. When troubleshooting Powernet issues, use the BCT-460DTNA PowerNet Assessment Tool. As of May 29, 2018, the AutoMeter is the only Daimler-approved tool for troubleshooting vehicle Powernet issues.

THE DESIGN IMPROVEMENTS PROTECT AGAINST WATER AND DUST INTRUSION. *PE

*RM

LOOSE DUCT CONNECTIONS OR DIRT FOUND IN THE DUCTING DURING A FILTER SERVICE INDICATE THAT DUCT CLAMPS SHOULD BE CHECKED, AND RUBBER SEALS ADDED WHERE NOT PRESENT. LOOSE DUCTING SHOULD BE THOROUGHLY INSPECTED FOR DAMAGE AND REPLACED IF NECESSARY. NO MODEL YEARS LISTED. *PE

MAY NOT PROVIDE AN ADEQUATE SEAL, ALLOWING UNFILTER AIR INTO THE SYSTEM. THE CLAMPS WILL BE REPLACED. *PE

THE POLY-V SERPENTINE DRIVE BELT MAY JUMP OFF ONE OR MORE OF THE PULLEYS DURING OPERATION. *PE

*KB

ON SOME TRUCKS, THE ABS MODULE WAS MOVED INTO THE CAB. THIS REQUIRED A CONNECTOR TO BE PLACED UNDER THE CAB, BEHIND THE FRONT STEERING AXLE, ON THE FRAME RAIL. IF THIS CONNECTOR IS LOOSE, OR IMPROPERLY INSTALLED, MOISTURE CAN ENTER THE CONNECTOR AND CAUSE CORROSION ON THE TERMINALS, WHICH WILL LEAD TO CONNECTIVITY ISSUES, CAUSING VARIOUS ABS FAULT CODES, AND THE ABS DASH LIGHT TO COME ON. *PE

*NJ

Revision removed steps instructing removal and installation of wheels. Daimler Trucks North America has released a new axle shaft to hub rubber O-ring (part number 11-30728-000) as a replacement for the paper gasket (part number 11-14418-000). The new O-ring will provide better sealing and is reusable. It is quicker and easier to use compared to the paper gasket, because using a paper gasket requires cleaning the hub when the axle shaft is removed.

Daimler Trucks North America has released a new axle shaft to hub rubber O-ring (part number 11-30728-000) as a replacement for the paper gasket (part number 11-14418-000). The new O-ring will provide better sealing and is reusable. It is quicker and easier to use compared to the paper gasket, because using a paper gasket requires cleaning the hub when the axle shaft is removed.

*RM

MODEL YEARS UNKNOWN. MODELS COLUMBIA, BUSINESS CLASS M2 AND CASCADIA. *PE UPDATED ON 6/14/2011. *KB

*PE UPDATED 2/28/12. *PE

*RM