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Hi BL,Did the fuel filter replacement yesterday,Victoria Day w'end.Midway thru the procedure,almost gave up cos the banjo bolt was cross threaded,no fuel leak.Was going to drive it to a mechanic with a hoist to do it for me.Of course everybody is off for the lond w'end.Reinserted the fuel fuse.Then the banjo bolt started to leak.Thus forced to and happily finished the job myself with the help of 2 family members.After I took the old filter out,My child stood on the wrench to break the npt/filter junction nut .The banjo bolts and the npt fitting into the filter were VERY tight,complicated by the fact though I WAS CHARGED FOR 4 COPPER WASHERS at the dealer 5 yrs ago,NONE WERE FOUND on the filter.Big thanks to you ,BL for your description is exact for my year(and the 1990 740 GL fuel filter change is different than that described in the FAQ,having only the external fuel filter and internal in tank fuel pump only)
Tom of Toronto,now WHO certified SARS-free
Hi Tom,
I'm working from my memory which ain't what it used to be but think this is correct. Hopefully one of these guys that has done this reciently will correct me if I'm wrong. I leave the filter in it's holder but loosen the band enough so I can slide it forward and back. Loosen your banjo fitting on the front of the filter and allow the fuel to run out into a container. Slide the filter towards the rear ( still leave it in it's holder) so you can see the rear fitting. You most certainly will have a male to male ( I'm pretty sure) NPT adapter with one end in the filter and the other joined to the fuel line. You want to hold the NPT adapter with one wrench and loosen the fuel line nut with the other. Then loosen the band around the filter enough so you can slide it out and take it to your bench. I put the NPT adapter in my vice and turn the filter with a strap wrench to unscrew it. You're right in that the casted "nut" on the filter is quite large and I didn't have a wrench that large. If you have a suitable oil filter wrench of the band type that would fit, that may work. I always hesitate to recommend cresent wrenches ( AKA knuckle busters) as they always seem to slip off and round things off etc. but if you work carefully with one you'd probably be OK especially using it on a filter at your vice. Just be VERY careful when installing the NPT adapter in your new filter if you use a cresent wrench as, if you slip off, you may puncture the new filter. I wrap my NPT fitting threads with the gas ( yellow) type teflon tape but doubt that's necessary. Make sure to use new copper gaskets on the banjo fitting. Snug up your NPT adapter but don't overtighten it as you may strip out the soft metal threads in the filter. Then just reinstall on the car and you're good to go. Good luck!
bl
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