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Freightliner M2 Recall 19V146: CNG fuel valve can eject if overtightened, risking injury or fire

NHTSA campaign 19V146, reported February 28, 2019, 15 vehicles potentially affected.

What this recall means for you

On certain 2015 refuse trucks converted to run on compressed natural gas, the fuel tank valve has a knob that is meant to turn only one turn. If the knob is turned more than one turn, the snap ring holding the valve stem can fail, and the stem can be forcibly ejected from the valve body. This can injure anyone in its path and allows compressed natural gas to escape, which increases the risk of fire.

The remedy is free. A-1 Auto Electric will notify owners, and authorized dealers will double the strength of the snap ring at no charge. Owner notification letters were mailed March 5, 2019. To check whether your vehicle is affected, or to ask about the repair, contact A-1 customer service at 1-559-485-4427.

Check whether this recall is open on your vehicle

The repair is normally free at an authorized dealer.

Official recall notice

Safety recall 19V146A-1 Auto Electric
Component
FUEL SYSTEM, OTHER
Problem
A-1 Auto Electric (A-1) is recalling certain 2015 Freightliner Refuse vehicles modified to be powered by Compressed Natural Gas (CNG). The CNG system has tanks with a one-turn for controlling CNG flow. If the valve knob is turned more than one turn, the valve's snap ring may fail and the valve stem may forcibly eject from the valve body. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 304, "Compressed Natural gas Fuel Container Integrity."
Risk
If the knob is overtightened, the valve retaining snap ring may fail and eject from the valve body, increasing the risk to injury to any person in it's path. Additionally, the unintended release of CNG can increase the risk of a fire.
Remedy
A-1 will notify owners, and dealers will double the snap ring strength, free of charge. Owner notification letters were mailed March 5, 2019. Owners may contact A-1 customer service at 1-559-485-4427.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

Affected vehicles

Freightliner 1085D2015
Freightliner M22015