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Service bulletin SB-12-TS-13

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 id10046819
Published by NHTSA2012-10-31
Manufacturer's numberSB-12-TS-13
Manufacturer's date2012-08-07
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:DIESEL; ENGINE

NHTSA's summary

DETROIT: DUE TO AIR COMPRESSOR HEAD DESIGN CHANGE, OF SERIES 60 BA-921, TO INCORPORATE 1/4" NPT THREAD SAFETY VALVE/UNLOADER VALVE, THE 1/4" VALVE HAS PRESSURE SETTING OF 200 PSI AND NOT 250 PSI AND IS NOT COMPATIBLE WITH OLDER M16. NO MODEL YEARS LISTED. *PE

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

Vehicles listed
DETROIT SERIES 60

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