harley davidson speedometer and tachometer not working

• 2022-04-25

When the diesel engine is running, the harley davidson speedometer and tachometer not working. This situation is generally caused by the following factors:

1)The boost pressure of the governor acts on the fuel limit, causing the throttle (load) not to increase. The boost pressure limit characteristic line shall be adjusted. Generally, it should be adjusted by the special technicians of the governor company. Only technicians who are familiar with the governor can adjust it.

2)Adjustment of the installation position of the governor output rocker arm and the oil regulating rod system: if the installation position of the output rocker arm is incorrect, the governor output shaft has been in the maximum position, but the rocker arm control oil pump rack is not in the maximum throttle position. At this time, the installation angle of the rocker arm should be adjusted to meet the requirements.

3)During the oil filling process of the governor, it is limited by the maximum throttle limit screw of the oil regulating rod system. When the governor is refuelled, the elastic rod is actually compressed, while the rack of the fuel injection pump does not move, so that the throttle cannot be added. Therefore, readjust the linkage and the maximum throttle limit screw.

4)The fuel injection rack is loose or the fuel injection rod does not move during the governor, resulting in looseness of the fuel injection rod. Looseness shall be eliminated to ensure the traceability of refueling / oil reduction action.

5)The fuel injection nozzle is damaged, resulting in poor atomization, resulting in load failure and high exhaust temperature. The fuel injection nozzle needs to be replaced to make the atomization return to normal.

6)There is air in the fuel oil circuit, which reduces the amount of oil actually injected into the cylinder, resulting in no load. The air in the oil circuit shall be eliminated to ensure the oil supply.

7)If the control signal is not in place, the throttle (load) cannot be added. Adjust the control signal to meet the requirements.

The above are the main common faults and their treatment in the control system of harley davidson speedometer and tachometer . Of course, in operation, there are other aspects. Various faults will occur at any time. However, as long as we carefully observe the fault phenomenon and analyze it carefully, we will be able to find out the cause of the fault, so as to take corresponding measures to properly solve it.