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Fuel Valve Test Device Common Troubleshooting Methods

September 6, 2022

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                                        Fuel Valve Test Device Common Troubleshooting Methods

 

Take HDP1100-D2 as the column
 

The pressure cannot be established:
1. Check whether the nut of the fuel injector fixing screw is tight (pressing the nut).
2. Check whether the test oil meets the hydraulic oil specified in this manual (replace the specified oil).
3. Check whether the filter is cleaned at the specified time (replace and clean the oil filter).
4. Check whether the oil level of the fuel tank is too low (increase the test oil).

 

The test bench does not work:
1. Check whether the air pipeline connected to the test bench is unobstructed (replace the joint and the trachea).
2. Check whether the air pressure regulating valve (3) and the input air meter (6) have air pressure (replace the air pressure regulating valve).

 

Pressure leakage:
1. Check whether the joints inside the test bench are leaking (tighten the joints).
2. Check whether the oil return valve is leaking (grind the oil return valve stem, replace the oil return valve).
3. Check whether there is oil return in the input and output joints of the high-pressure oil pump (disassemble the two joints for cleaning or replace the two inlet and outlet joints).

 

The pressure gauge does not return to zero at zero pressure:
After the pressure of the test bench is completely released, adjust the "0-adj" knob at the rear of the digital display to make it zero. Clockwise increases, counterclockwise decreases. (If there is no response, replace the pressure gauge and pressure sensor).
 

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 power, if there is power, it will not display (replace the digital display meter.)

 

The digital display table is garbled:
Replace the pressure sensor If the code is still garbled, please replace the digital display.

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