Genuine Volvo 245 Fuel Pump

Volvo 245 Fuel Pump Parts and Q&A

• Fuel Pump
  9142044
  Q: What are the components and functioning of the fuel pump on Volvo 245?

  A:

  The fuel pump in the 240 series is a Pierburg APG, diaphragm type pump and is made up of a number of basic components which include a petrol chamber with a filter, outlet valve, inlet valve, diaphragm, spring pushing on the diaphragm, the lever pulling the diaphragm and a small spring against which the lever moves. When there is no petrol in the pump the diaphragm is pushed up by the spring and the space inside the fuel chamber is minimized, which means that the outer end of the lever is in its lowest position. The lever is operated by a cam on the engine camshaft which pushes the lever upwards, which draws the diaphragm downwards and leaves a space inside the fuel chamber creating a vacuum which sucks in petrol. As this process continues the fuel chamber becomes full of petrol which passes through the outlet valve and outlet pipe to the carburettor float chamber. Once the float chamber is full, the needle valve on the carburettor closes so that no more petrol can pass through. At this point, the diaphragm cannot return to its original position and as the pump fills with petrol, it extends downwards holding the lever away from the camshaft. When the level in the carburettor float chamber falls, the needle valve opens and the petrol again flows through the outlet pipe, the diaphragm moves upwards and pushes the petrol out, the lever also moves closer to the cam, until the pump is again full.
• Fuel Pump
  1336517
  Q: What are the options for fuel pumps and their maintenance in terms of filter cleaning and overhaul on Volvo 245?

  A:

  In addition to the Pierburg fuel pump, a Sofabex make may also be fitted. The cover on both these pumps can be removed for filter cleaning; however, more extensive overhaul is not feasible due to the unavailability of spare parts or the semi-sealed nature of the pump.