I am replacing a diesel injector on my 84 300 CD. I know I should do all of them at once, but I'm only doing this at all because one is weeping badly and it must be removed.

I have a rebuilt bosch injector and acces to a garage with plenty of tools.

I have a 27mm deep well socket to get the injector out, but what aobut the 17mm special tool used to remove the fuel lines? is this really neccessary or can I just use my 17mm open end wrench to get it done?

I'm guessing this has something to do with applying the exact amount of torque to the fuel lines, something you can't do accurately with a box wrench. Still, I'd rather not have to invest in another special tool if I can help myself.

My only concern with getting the injector out is that I may loosen the entire socket and not just the injector. What then?

What about the little washer that goes inside, or the condition of the ball socket itself? Anything I ought to look for while I'm in there?

Any thoughts on the task are welcome, and thanks

Gil