# Service bulletin TSB\-Veriflo Adjustment

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: 11017116
- Published by NHTSA: 2025\-04\-21
- Manufacturer's number: TSB\-Veriflo Adjustment
- Manufacturer's date: 2025\-04\-21
- NHTSA component: FUEL/PROPULSION SYSTEM
- Manufacturer's system: Fuel Delivery System: High Pressure Regulator

## NHTSA's summary

This TSB deals with adjusting the high pressure regulator in the CCFT Fuel Delivery System if it gets out of range for the Cummins natural gas engines. This deals exclusively with the Parker Veriflo regulator adjustment. This TSB references an OEM dash message for "Fuel Pressure Too Low" that does not log any engine fault codes.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11017116-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11017116-9999.pdf)

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

## Components

Fuel system

## Vehicles listed

- CUMMINS CLEAN FUEL TECH CNG FUEL SYSTEM
- MOMENTUM FUEL TECH CNG FUEL SYSTEM

JSON: [/v1/bulletins/11017116](/v1/bulletins/11017116)

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