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Service bulletin 1734B

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 id631280
Published by NHTSA2002-05-21
Manufacturer's number1734B
Manufacturer's date2002-01-01
NHTSA componentSERVICE BRAKES, AIR

NHTSA's summary

SUBJECT REGARDING FULL BRAKE APPLICATION WITH THE AIR SYSTEM PRESSURE AT GOVERNOR CUTOUT LEVEL MAY CAUSE AIR TO ESCAPE FROM THE SPRING BRAKE CONTROL VALVE. *TT

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
NEW FLYER NEW FLYER

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