WenmarOpen by Wenmar Pro

Service bulletin ENP-164

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 id10177249
Published by NHTSA2020-07-13
Manufacturer's numberENP-164
Manufacturer's date2020-06-03
NHTSA componentELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY

NHTSA's summary

Agility Fuel Solutions LLC (?Agility®?) defueling procedure prepared for Gillig buses equipped with Type 3 fuel cylinders and electric solenoid cylinder valves. With compressed natural gas (CNG) cylinders equipped with electric solenoid cylinder valves, verification that cylinder pressure is fully exhausted is required before any removal, replacement, tightening or loosening is performed on any valve, pressure transducer, PRD, tubing or fitting connected to the cylinders. This verification is required to confirm the electric solenoid cylinder valves opened properly during the defueling process and allowed the cylinder to be depressurized and defueled. This procedure describes two methods to defuel the cylinders, lines and valves. Both methods include a procedure to verify the electric solenoid cylinder valves opened properly during defueling and that the cylinder pressures are fully exhausted. Either method can be used.

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

Electrical system, Equipment and accessories, Fuel system

Vehicles listed
AGILITY FUEL SYSTEMS CNG FUEL SYSTEM

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