I changed my diesel filter on the weekend. It's the second time I've changed it, having learnt the hard way the first time, I found it quicker and less troublesome this time.
I removed the whole unit from the car as described above.
You have to remove three pipes. 1 from the fuel tank, 1 that goes to the pressure pump and 1 to the return manifold. You also have to remove the 2 plugs. 1 for the diesel pre heater and the other to the temp switch.
Undo the 2 13mm AF nuts and lift the filter unit up to gain access to the H2O sensor. Remove the clip that holds the plug on. Lift the unit clear.
Unscrew the H2O sensor and drain the diesel into a clean container.
Unscrew the old filter from the housing. Replace the sensor onto the new filter with the new seal and fill with clean diesel.
Before fitting the new filter smear some clean diesel around the seal on top of the filter. Screw the filter back on. Replace the plug on the H2O sensor and place the housing back on the studs and tighten the 2 13mm AF nuts.
Replace the 3 pipes and 2 plugs.
Refit the engine cover.
The first time I changed it I didn't fill the filter up before I fit it.
One flat battery and 20 minutes primeing the fuel pump/manifold and the lesson was learnt.
Self primeing my a**e