ISX15 CM2350 injector cups

[Unilevers]

(03-11-2020 )kozakvod Wrote:  

(03-01-2020 )Signature620 Wrote:  Cummins sell a tool that installs injector cup retainer/crush rings in the head while it's still on the engine. I've had and heard of a very high success rate doing it this way. It isn't even that big of a job so it's worth a try.

Just need the injectors out and the rocker shafts removed.

This only works on CM2250 and 2350 engines. Fuel/coolant cross-contamination on a CM570/870/871 is only rectified by replacing the cylinder head.

I was getting a bit of water into my Water/Fuel separator. After a pressure test it was determined that I had an injector cup issue. Cummins did indeed replace all cups no head removal and so far 100k miles or so later no further issues.

they did not replace the cups, they used a tool to put the rings in the cups. to change the cups you have to change the head.