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Service bulletin TSB-049

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 id10240517
Published by NHTSA2023-08-07
Manufacturer's numberTSB-049
Manufacturer's date2023-07-19
NHTSA componentEQUIPMENT

NHTSA's summary

In severe operating conditions, some sleeves on the bottom of the cylinders positioned over the tractor tires may experience accelerated wear. The sleeve that the lower flex plate is secured to can become worn to the point that it fails and no longer restrains the bottom of the cylinder.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Equipment and accessories

Vehicles listed
QUANTUM FUEL SYSTEMS LLC. VP LITE2017 to 2022

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