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Service bulletin PIL-552

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 id10042753
Published by NHTSA2012-01-10
Manufacturer's numberPIL-552
Manufacturer's date2011-09-16
NHTSA componentSERVICE BRAKES, AIR:SUPPLY:GOVERNOR

NHTSA's summary

MERITOR: FIELD REPORTS RECEIVED REGARDING GOVERNOR INTERNAL SEAL DISC INTERMITTENTLY CAUSING THE GOVERNOR NOT TO EXHAUST AIR FROM UNLOADER LINE BY PREVENTING COMPRESSOR FROM BUILDING UP AND CUTTING IN. *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

Brakes

Vehicles listed
MERITOR MERITOR

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