Bad luck the Fuel Pump died. Good luck it died in my Drive Way. Bad luck the Fuel Pump is in the Tank and the Fuel Tank is ¾ Full.

Up by the Fuel Pump Relay there is a Wire that bypasses the Fuel Pump Relay and goes direct to the Fuel Pump. If you apply + Voltage to it from your Battery the Fuel Pump should work. If the Fuel Pump does not work you know the Fuel Pump or the wiring to it is no good.

Tried draining with a remote Electric Fuel Pump hooked to the Tank Fuel outlet but Fuel would not pull through the old Fuel Pump.

I tried sticking a skinny nylon tubing through the Fuel filer neck but the antitheft baffles did their job.

I read that you could remove the Fuel Fill neck and started to do that but found the clamps on the Fuel Fill Neck hose were turned a direction you could not get a screwdriver on.

I had also been reading the Service Manuals I have and it said that the method of lowering the tank to get at the Fuel Pump/Sending unit can come out by dropping the Fuel Tank but the Fuel Tank lines are too short and I did not want to drop a ¾ Full Tank.

The other method is to cut a hole in the bed which also has the added advantage that it would be easier to replace the fuel pump the next time it happens. (I also looked at some other forums and they said the replacement Fuel Pumps generally don‘t last as long as the originals.)

I used a Harbor Freight electric cutoff tool to cut the straight lines and due to the fact that I cut the hole larger then needed I could have used a Spot Weld Cutter to cut the spot welds on the Cross Member I encountered.

I have one but did not want to look for it so I did some ugly grinding to deal with them.

Sure enough the Hoses are short (see pic).

On one of the Forums it said you could drain the tank by way of the Fuel Return from the Engine. So I hooked the electric pump up to that and it worked as the tube goes down near the bottom of the tank.

The Sending Unit with Fuel Pump came out easily and there was no issues replacing the Fuel Pump which was an AC Delco (unfortunately made in China) and fit exactly. And there was no issues re-installing the Sending Unit with Fuel Pump.
I re-filled the Tank by putting the Fuel back into the fuel return.
I have not replaced the Metal (which got pretty twisted due to me doing some prying while some of the spot welds had not been completely ground through) yet as I still have some smell of gasoline. I am guessing I need to replace the spring type clamps with worm gear type clamps or worse replace some hoses.

I don’t know if the Fuel Pump had been replaced before or not but it had a Carter made in the USA Fuel Pump on it and the screw fittings on 2 of the tubes on the sending unit had a never-seeze type compound on the threads.
　
　
　
　

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84 300D, 82 Volvo 244Gl Diesel