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Troubleshooting and Elimination of Fuel Valve Test Device

June 6, 2023

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                                     Troubleshooting and Elimination of Fuel Valve Test Device
(1) The pressure cannot be established:
1. Check whether the nut of the fixing screw of the injector is compressed (tighten the nut).
2. Check whether the test oil complies with the hydraulic oil specified in this manual (replace the specified oil).
3. Check whether the filter is cleaned according to the specified time (replace and clean the oil filter).
4. Check whether the oil level of the fuel tank is too low (add oil for test).
(2) The test bench does not work:
1. Check whether the air pipeline connected to the test bench is smooth (replace the joint and air pipe).
2. Check whether the air pressure regulating valve (3) and the input air meter (6) have air pressure (replace the air pressure regulating valve).
(3) Pressure leakage:
1. Check whether there is any leakage in the joints inside the test bench (tighten the joints).
2. Check the oil return valve for leakage (grind the oil return valve stem, replace the oil return valve).
3. Check whether the input and output connectors of the high-pressure oil pump have oil return (disassemble the two connectors to clean or replace the two inlet and outlet connectors).
(4) The pressure gauge does not return to zero at zero pressure:
After the test bench pressure is completely released, adjust the "0-adj" knob at the rear of the digital display to return it to zero. Clockwise increases, counterclockwise decreases. (If there is no response, replace the pressure gauge and pressure sensor).
(5) The digital display does not display:
1. Check the power input terminals of the digital display meter (110VAC for terminals 1 and 2; 220VAC for terminals 1 and 3. Select the input group according to the situation on board, please consult the electrical engineer on board).
2. Check whether the input terminal has electricity, if there is electricity, it will not display (replace the digital display meter.)
(6) Garbled characters on the digital display:
Replace the pressure sensor, if the code is still garbled, please replace the digital display meter.

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