YES IT DOES "JUST UNSCREW"
however its very difficult to get it going, if you use a hammer there is a BIG chance it will split, dont worry though they are only £29 +vat !!! there is a tendancy for the unit to rotate also, this must be prevented or you WILL rip the level sender off the bottom, these are about £430, oh dear! i have made a tool to make unscrewing the ring a one handed job, so with the other you can prevent it rotating. you are welcome to borrow this but i need it back.
before removing the pump you must check the pressure as it cannot be tested off the vehicle, i do have a rig for this also but am loathed to post this out as parcel farce will back a truck over it and i will get 10p compensation.........
so i need to come to you or you to me! oh, and yes i do have a spare pump.
now the good news:
if you have the cover off the filter change is easy. let the pressure off the system, engine cold, using the schrader valve on top of the engine, the two pipes on the filter have push in clips, these will slacken off with no pressure in the system so push the buttons in and just pull the pipes off! cloths are handy to catch all the fuel in, refit in reverse noting the flow arrow of the filter points towards the outside of the car. no need to put the hatch back to roadtest, and let us know.
as i said , if you are unsure i am happy to buzz over but i dont want it costing me anything, i am not after wages but i hope with todays fuel prices you'll understand, spike.