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Service bulletin T1706A

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 id10086599
Published by NHTSA2016-12-19
Manufacturer's numberT1706A
Manufacturer's date2016-03-28
NHTSA componentENGINE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

NHTSA's summary

THIS TEMPORARY REPAIR PRACTIVE IS BEING ISSUED TO AUTHORIZE THE REPLACEMENT OF THE LUBRICATING OIL FILTER BYPASS VALVE ON CERTAIN ISX12 AND ISX15 ENGINES ANYTIME THE UNIT IS IN FOR MAINTENANCE OR REPAIRS, WITH CERTAIN RESTRICTIONS ON REIMBURSEMENT. THIS IS A RE-ISSUE OF A PREVIOUSLY RELEASED COMMUNICATION. THE NEW BYPASS VALVE HAS MORE EFFECTIVE SEALING CAPABILITY AND PROVIDES BETTER PROTECTION TO FULE PUMP LUBRICATED COMPONENTS. THIS IS A REISSUE OF A PREVIOUSLY RELEASED COMMUNICATION.

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, Labels and manuals

Vehicles listed
CUMMINS ISX12
CUMMINS ISX15

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