NHTSA campaign 19V146000
Hazard
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."
Consequence
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.
The text above is quoted verbatim from the NHTSA record. Confirm the affected units and the remedy with the manufacturer or NHTSA. Recall data may be incomplete, delayed, or superseded.