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What is the installation direction of the diesel heater fuel pump?

2 Answers

Mockingjay

09/02/25 2:40am

The installation direction of the diesel heater fuel pump is with the outlet nozzle end facing upwards, at an angle of approximately 15-35 degrees. Below are the detailed installation steps: Before installation: Before installing the fuel pump, first place the vibration damping rubber pad on the pump to prevent it from shaking loose. Then, select the appropriate installation position for the fuel pump and secure it to the vehicle body. During installation: When installing the fuel pump, install a diesel filter at the front end of the inlet nozzle. The outlet nozzle end of the pump should face upwards, at an angle of approximately 15-35 degrees. Precautions: When selecting the fuel hoses for both ends of the pump, ensure they do not exceed 5 meters in length. Otherwise, there may be insufficient oil pressure to deliver the fuel to the diesel heater.

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LaEvangeline

09/14/25 4:58am

When installing the diesel heater fuel pump, pay close attention to the flow direction. I've seen many people install it backwards, causing the pump to fail. There's usually an arrow mark on the pump housing - this arrow should point in the same direction as the fuel flow. The inlet connects to the fuel line from the tank and should be positioned below the tank bottom, while the outlet connects to the filter and burner. If you can't find an arrow on the pump, remember that the thicker connecting tube is the inlet. If installed backwards, the pump will make a humming noise while spinning idle, and in severe cases, it can directly burn out the pump core. Before installation, it's best to mark the fuel line direction with a marker pen. Keep the tubing between the tank and pump as short as possible to avoid U-shaped bends that might affect suction. When securing the pump, don't let the fittings bear the pipeline tension, and compress the rubber gasket firmly to prevent vibration noise.

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