Page 47 - Propane Vehicle Essentials and Safety Practices
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Depressurized Components






                                                                                                            Lesson 6.2

                                                                                                          Depressurizing








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                           Depressurizing Fuel System Components                             Depressurizing Fuel System Components
                               (Excluding fuel tank and fill components)
                                                                                       1. Shut off liquid supply valve and return valve
                    • Fuel System Depressurizing
                                                                                       2. Slowly loosen the liquid supply and vapor return line connections until
                       o Always follow manufacturer’s procedures                         a white mist of propane starts leaking
                       o Generic description of procedures                             3. When mist disappears loosen the lines slowly until no pressure remains
                          Close tank supply and return valves
                          Perform procedure to depressurize                           4. Disconnect the liquid supply and vapor return lines
                                                                                       5. Perform needed repair or service


                                                                                                   Always follow manufacturer’s procedures to reassemble

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