I'm going to check the injection timing and replace the nozzles on my
1980 300SD, 617 engine.   What wrench have folks been using for the
17mm connection where the injector piping meets the injection pump?
I've seen a special Hazet socket type wrench made for the purpose,
which sure looks ideal, but they are obviously expensive and I would
have to order one.   Wondering what others have used?   A std open end
wrench doesn't have enough clearance.  I thought about an open ended
crowsfoot wrench, but I think they won't fit because the lines are too
close to each other?

So, any suggestions from others who've been, there, done, that would
be appreciated.