# Service bulletin TSB\-028

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.

- Type: Service bulletin
- NHTSA id: 10131591
- Published by NHTSA: 2018\-04\-02
- Manufacturer's number: TSB\-028
- Manufacturer's date: 2018\-01\-12
- NHTSA component: FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES

## NHTSA's summary

Quantum has been advised by the supplier of the PRV, that the PRV spring used to directly control the venting pressure may not have been properly processed resulting in inconsistent spring pressure. This spring variation can result in erratic and unpredictable activation of the PRV valve.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10131591-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10131591-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Fuel system, Fuel tank

## Vehicles listed

- QUANTUM FUEL SYSTEMS LLC. CNG FUEL SYSTEM

JSON: [/v1/bulletins/10131591](/v1/bulletins/10131591)

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