Fuel Pump: Description and Operation

BOSCH FUEL PUMP, CHECKING FEED PUMP






WARNING Ensure good ventilation. If approved ventilation for removal of fuel fumes is available, this should be used.

Wear protective gloves. Long-term contact with fuel can cause skin irritation.

Keep a class BE fire extinguisher nearby. Be careful of the danger of sparking, e.g.from circuit breaking, short circuiting etc.

No smoking.

Removal:

1. Fold up the rear part of the luggage compartment floor and undo both the bolts holding the floor.

Raise the floor.

2. Turn both the bayonet clips securing the cover over the fuel pump and remove the cover.

3. Remove the clip around the pump's sealing collar.

4. Start the fuel pump by connecting LH diagnostics cable 83 93 886 between +30 and the positive side of the fuse to the fuel pump so that there is voltage to the pump.

5. Start the feed pump by moving the switch to "ON".

WARNING Large quantities of fuel can spray out and action should therefore be taken to prevent petrol from getting into the luggage compartment. If fuel escapes, make sure that you get rid of all vapor.






6. Carefully lift the lip of the rubber collar and check if petrol comes out of the safety valve at the top of the container.

7. If the feed pump is running but no fuel comes out of the safety valve, change the feed pump. If the feed pump is not working, check the leads to it.

Fitting:

Fitting is in reverse order.

Important The area around the aperture to the fuel tank must be dry before the fuel pump collar is clamped on.