1968 – 1979 VW 1600 Transporter Fuel Pump Dismantling, Repair, and Reassembly for the Early Models

Before dismantling a fuel pump with a view to repairing it make sure you can obtain a repair kit – that is a new diaphragm and filters and washers. If not then you are wasting your time and will be better off buying another pump. It may be possible to use a repair kit from another make of pump to cut out another diaphragm but this will be a somewhat expensive repair of a temporary nature.

The top part of the pump is a diaphragm valve which is spring loaded to cut off the fuel flow from the tank into the pump. Otherwise fuel would gravity feed. The valve opens as soon as the engine turns and fuel pressure lifts the diaphragm. At the side of the top section of the pump is a hexagon plug above the fuel inlet pipe. Removal of this plug gives access to the filter screen which can then be cleaned. Do not forget to block the pipe when doing this or fuel may flow out. If there is no suspected fault in the cut off diaphragm it need not be removed to get to the main diaphragm.

1968 – 1979 VW 1600 Transporter Fuel Pump Components (Early Type)

1968 - 1979 VW 1600 Transporter Fuel Pump Early Models Components

1. Cover screw
2. Washer
3. Cover
4. Gasket
5. Filter screen
6. Body screw
7. Washer
8. Pump body, upper
9. Diaphragm assembly
10. Pump body, lower
18. Gasket, pump to flange
19. Intermediate flange
20. Gasket flange to crankcase
21. Push rod

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