Fuel Pump: Service and Repair

CI SYSTEM COMPONENTS, CHECKING REPLACEMENT, ETC.

- TANK PUMP -







Fault symptoms

A defective tank pump may cause low line pressure.

The following symptoms can arise:

- increased noise level at the main fuel pump
- low top speed, poor engine performance
- juddering, engine cut-out (fuel-vapour locks).


Check the tank pump

Carry out the repair operations.






Tank sender unit, removing/fitting

Necessary if the tank pump or filter is to be replaced. The unit is removed/fitted through the aperture in the rear floor section.

First unscrew the fuel tank cap to release any overpressure in the fuel system.

Use tool 5169 to remove the unit.






Use a new O-ring when refitting the unit. Lubricate the O-ring first with glycerine or similar.






Parts required when changing from VDO to AC tank pump

Part P/N Qty

1 - pump 1276330-6 1

2 - bracket 1235444-5 1

3 - nut 1266390-2 2

4 - washer 940121-7 2

If Necessary.






5 - suppressor 1235204-3 1

6 - plug insulator 958207-3 1

7 - sleeve insulator 958208-1 1

8 - filter 1266822-4 1

The earth/ground strap (9) must be transferred to the new pump, and where applicable the suppressor must be connected in series with the positive terminal of the pump.
Must be connected in series with the positive terminal of the pump.