We see quite a few mechanical injector cores come back with damage from improper removal. We realize that many of you do not have the correct tools for removal. However, there are simple ways to remove the injectors without damage.
If the hole type injectors on your engine are installed at an angle, then the spray pattern is offset to match the bowl in the piston.
The proper alignment may be accomplished with a pin or ball for alignment. Some injectors may use a hold down clamp and positioning the return sets the holder for the proper alignment into the engine.
If you are removing these injectors from the engine, they must be pulled or pried straight up. You can use heel bars, like the image below, with an M12 x 1.5 (17 mm hex OD) or M14 x 1.5 (19 mm hex OD) thread pitch nut threaded onto the top of the injector. Some injectors have a center threaded hole, which you can screw in a bolt, which would most likely be metric thread, then pry on the bolt.
24 valve 5.9 Cummins injector removal. These injectors must have the feed tube or connecting tube removed prior to removing the injector. They align into the bore based on the feed tube connection