D4 7u fuel injectors

I have a D4 traxcavator and I think water got in and engine is stuck. I am wondering how big washer like piecd around o ring that is around injector comes off. It is round, not shaped like a nut. Any help is greatly appreciated.

It takes 7 tools to pull and reinstall precup.

Is explained in servicemans book for your engine.

Bob

That's not much information to go by but if it has glow plug chambers it take this splined socket to remove the ring.

Thanks Old Magnet. The three numbers must be three different sizes of sockets? I see the 8s2243 can be bought several places. Thanks again, good information.

All three numbers are for the same part......it's a Cat thing?????

why they change part numbers i dont know. maybe it so someone in head office can justify their continued existence.

yeah if the material changes or the dimensions change fair enough.

maybe its becuase the supplier changed. many cat tools used to be made by proto.

Hi Team,

over the years Cat used this size spline drive socket in many applications and the shape and metallurgy changed as needed, a modern drive will still work in early applications but an early drive may fail or not fit later applications--note the reduced outer section on the pictured socket above.

Cheers,

Eddie B.