Changing A Fuel Filter On A GU IV Patrol
I'm putting this post in to help others to change a fuel filter on a GU IV Nissan Patrol as it's the worst filter I've changed in my whole life what a joke plus its expensive $$$ even for a non-genuine replacement filter (Repco RDF38).
1st off remove the fuel hoses off filter housing, then unbolt the x2 mounting bolts 12mm this will help with better access to the filter warning plug on the bottom of filter unit. The next part is really tricky getting the spring clip off the plug, get a small flat blade screwdriver and lift one side up to remove clip, use other hand to grab it before it goes flying away never to be found again. Once the clip is removed you can unplug the wiring harness from filter, and the whole filter assembly can be removed and placed on a bench for filter replacement.
The next tricky part is removing the filters water sensor from old filter, just twist it and you will feel it unclip from its locating lugs then keep turning it until it stop's then you should be able to pull it out from filter housing with a little force job done. Then on the top of filter pull and remove clip for the plastic T-piece, inside your new filter are new o'rings for both items. Unbolt clamp holding old filter and change out with replacement filter.
Then you should be all good to put back together.
Hope this helps. Not a fun job by all means for anyone.