Hi Winmutt,
I just happened on this thread.
I've got an OM314-powered truck. If you're not getting fuel (are you sure, does the pump go hard?) I'd earnestly recommend that you take the (small) extra time to check out the system from tank-to-tank. Have you checked out the 2 prefilters? There's one fitted inside the tank at the bottom of the main fuel feed line - these are famous for clogging up with age, you may need to drain the tank and remove it from beneath. There's another one directly underneath the IP; it's a glass vessel that you screw on and off, like you'd see on an old-fashioned tractor. Depending on your body style, this filter can be very hard to spot, but it is there! Then of course there's the main filter itself...
You should definitely plan on blowing out these lines with compressed air. Assuming the hand pump does work, and that your batteries (24V starter on your truck?) are healthy, you should be able to get it going once you've cracked the line running from the filter to the pump and you can see diesel flowing. There is also a convenient bleed screw on the pump body - you really don't need to crack any injectors.
You've probably figured all this out by yourself anyway. On my truck I've replaced the fuel filter with one from a scrap car that has a built-in primer pump. It's easier than messing about with the annoying OEM model.
HTH
Giles