Ford 6.9 IDI diesel How To Change a fuel lift pump

After removing the lift pump you then you need to clean up the gasket surface on the engine block by removing any old gasket material with a scraper/solvent or whatever you find works best for you.
THEN COMES THE IMPORTANT BIT!
You REALLY need to check the cam that operates the lift arm on the new pump is resting in the correct position (cam lobe pointing upwards) BEFORE you fit the new pump with the arm underneath the cam.
It is very difficult to see inside the pump aperture to check the position of the operating cam so my tip is to use a digital camera with flash to see what is what!
The correct position is with the cam lobe pointing upwards.(see picture above)
If you find that the cam is not in this position you can "nudge" it round using the ignition key.
Once you are sure the cam is correctly positioned you can the proceed to fit the new gasket & pump.
The reason that you take all this care is because if you don`t ensure the cam lobe is pointing upwards it is quite easy to fit the pump operating arm above the cam by mistake, then once the engine starts it wrecks the pump & dislodges the pivot pin which then drops inside the engine sump pan-thus creating a lot of unnecessary work & expense.
The operating arm on the new lift pump may be a different shape (my old one was straight and the new one was shaped) but as long as it is the correct one supplied it will be fine.

Additional notes!

Because it is not unknown for the operating cam to wear on these engines you may decide to use an electric fuel pump in place of the mechanical lift pump.
You could just cut of the pump operating arm and use the old pump body as a cover- But make sure that you bypass the lift pump with the fuel lines because you don`t want the diaphragm puncturing under pressure and filling the crank case with diesel.

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