Removal/refitting

1. Remove the ring nut securing the fuel pump using tool 1.822.135.000.

1. Withdraw the pump-fuel level meter assembly from the tank together with the gasket.

REMOVAL/REFITTING

1. Disconnect the fuel delivery hose from the electric pump.
2. Disconnect the two electrical connections from the electric pump.

1. Withdraw the electric pump with the intake filter and the support ring and if necessary separate them.

CHECKS AND INSPECTIONS

Clean the gauze filter thoroughly. The presence of water in the fuel is particularly damaging to the pump as it causes internal rust. Carefully check the operation of the pump if the fuel is contaminated with water.

Also check the efficiency of the pump power supply contacts as any oxidation would cause a drop in voltage at the leads, resulting in the formation of bubbles and a reduction of the fuel injected.

WARNING: When changing the pump, remember that it is supplied filled with protective oil and with the fittings suitably plugged. When assembling on the car it is not necessary to empty the oil from the pump as it is burnt immediately by the engine. If the protective oil is emptied from the pump, it must be put into service within two weeks in order to prevent the formation of a film of dry oil on the motor collector which would make it unserviceable due to lack of electrical continuity.