Technical Updates

QSG12 New Lubricating Oil Pump for Oil Pressure Gauge Fluctuation - QSOL Reference: TSB180159. A new lubricating oil pump is available with internal drillings to prevent lubricating oil pressure gauge fluctuations.

B6.7 CM2350 B121B New ECM Calibration Code for Turbocharger Compressor Seal Oil Leak - QSOL Reference: TSB190012.  A new engine ECM calibration code is available to prevent a pressure difference across the turbocharger during certain running conditions that can lead to compressor seal oil leaks.

ISX, QSX, and X15 Lubricating Oil Pumps with Unexpected Oil Pressures - QSOL Reference: TSB190018. A new lubricating oil pump was released to production with different flow characteristics that do not affect function of the lubricating oil system.

X15 CM2350 X114B High Number of Inactive Counts of Fault Code 7125 - QSOL Reference: TSB190017.  A calibration issue can lead to fault code 7125 appearing after a power down is done.

ISL, L9 and ISLg Damaged Flywheel Housing on Nova Bus Chassis - QSOL Reference: TSB190014.  A new flywheel housing is available for ISL, L9 and ISLg engines in Nova Bus chassis.

X15 New Aftertreatment Diesel Particulate Filter Differential Pressure Sensor - QSOL Reference: TSB190019.  A new aftertreatment diesel particulate filter differential pressure sensor has been released for service. However, additional parts are required for installation.