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Service bulletin TSB150123-072715

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10086041
Published by NHTSA2016-12-13
Manufacturer's numberTSB150123-072715
Manufacturer's date2015-07-28
NHTSA componentENGINE; EQUIPMENT

NHTSA's summary

THIS TECHNICAL SERVICE BULLETIN DESRIBES THE VERIFICATION AND RESOLUTION OF OIL CARRYOVER ON KNORR-BREMSE TWIN CYLINDER AIR COMPRESSORS ON CERTAIN ENGINES. EXTERNAL OIL LEAKS FROM THE AIR COMPRESSOR AIR DISCHARGE LINE IS DUE TO UNDERSIZED AIR COMPRESSOR AIR INTAKE AND AIR DISCHARGE PIPE.

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine, Equipment and accessories

Vehicles listed
CUMMINS ISM 11

Listing a model year does not mean every vehicle of it is concerned: the document says which.