Enidine HPNGV4 High Pressure Lock Off Replacement Instruction and Maintenance Manual

About this manual

This manual provides step-by-step instructions for replacing the High Pressure Lock Off (HPLO) assembly on the HPNGV4 Series Compressed Natural Gas Vehicle Regulator. It details the necessary preparation steps, such as isolating the fuel supply and disconnecting the battery, to ensure safety during the repair process.

What's inside

• Introduction
• Preparation
• HPLO Removal
• Assembly
• Bench Test
• Installation and Vehicle Test

Frequently asked questions

What is the stated purpose of the HPNGV4 HPLO replacement kit?

This repair kit includes all parts required to replace an HPLO on the NGV fuel pressure regulator.

What torque specification is required for the HPLO tower assembly?

The tower must be tightened to 25 +/- 2.5 ft-lb using a deep 6-point 7/8" socket wrench.

What voltage is needed to verify the HPLO opens freely during a bench test?

Apply 12 or 24 volts direct current power to the coil, depending on the model.