Fuel tank and Pump - Defender Source
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  #1  
Old September 8th, 2012, 02:39 PM
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Joe Still
95 D90 NAS 3.9l ST AA Yellow #2719
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Fuel tank and Pump

Got my fuel tank out. Pulled fuel pump which was supposed to be new from 300 miles ago and it appears so. Got a few questions:
  • Is wiping out the insude of the tank clean enough?
  • How the he11 do you get the fuel pump gasket back in? The thing is spring loaded and the gasket keeps trying to squeeze out and hang up the pump
  • Looks like I need the replacement rear bulkhead, frame stubs/gas tank supports. Should I use ptd steel to match the old or pay extra for the galvanized?
  • Need replacment rubber fuel line hoses- best source?
  • How hard is it to replace the fuel lines? Those old ferrules are in vise-grip land at this point.
  • Any way to run the fuel pump dry without damage to be sure it runs? Perhaps fill the tank with water and run it?
Thanks in advance for ideas.

js
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  #2  
Old September 8th, 2012, 02:52 PM
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shayne young
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not water... mineral spirits or diesel..
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  #3  
Old September 8th, 2012, 03:44 PM
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Verticalscrote
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Assuming this is a NAS truck



The gasket/sealing ring usually gets replaced but if it's 300 miles since new then you are probably OK to reuse. It installs first into the opening then the pump asm slides in. Sometimes it slides in like butta and sometimes it don't. I did one last week that fought and fought, finally I just lubed it and the part of the pump asm where it touches with clean wheel bearing grease. Sparingly mind you, use a little then try it and if it won't go without rolling the seal reapply and try again. Took me about 4 tries but finally popped right in.
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  #4  
Old September 10th, 2012, 02:49 PM
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Joe Still
95 D90 NAS 3.9l ST AA Yellow #2719
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I was trying to fit it with the ring on the pump (duh!). How did you get so smart? js
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Old September 10th, 2012, 03:24 PM
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Bill Adams
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You can clean your tank with any degreaser. I usually use POR-15 "Marine Clean". It will remove any nasty from your tank. You really need to let it dry by using a vacuum cleaner on "blow" with the hose duct taped to the filler and the pump hole open.
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Old September 11th, 2012, 10:25 AM
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Joe Still
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Thanks, apparently the fuel pump installer cleaned it pretty well 300 miles ago so I wiped it out with little debris. I did find the paper parts label from the fuel pump in there- lol.

This is all about eliminating my stalling / not starting from fuel starvation. Starting at the tank and working forward.

While getting the tank out I ruined the two flex hoses (ok, I cut them in frustration)and one of the steel lines. My gosh welding couldn't do what time and salt did to those.

What do you think about pushing the end of the rubber fuel line hose on to the steel line over the dimple and using a band clamp? It works for the fuel filter.

I won't be lucky enough to have damaged the steel line that only goes from near the tank to the fuel filter. With my luck on this truck I will have ruined the line that requires the body to be removed to replace it(return line from fuel pressure regulator). In the catalogs it looks like a sprial!

Thanks again for the input. This is not a bulletin board, its a support group. js
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