2008 ISM 500 CM876, injector replacement...clearance

You may have better luck on rawze.com there are some real Cummins experts on there. A few here too.

 

See attached

 

Yes,


All they mean is put the contact point of the dial indicator directly above the ball that contacts the injector on the injector rocker. It's just so you get an accurate measurment. The dial indicator method is a way of checking to see if they are in adjustment.

You can just use the adjustment procedure. The step about purging the fuel is critical to proper adjustment.

 

When you set a Celect injector, you are setting with plunger travel all the way down. If overhead hasn't been run in awhile, the carbon and gunk gets smashed in nozzle orfices and you have a misfire. That is why they have step of spraying carb cleaner and a way to check without just performing the adjustment. When I run an overhead on engine with Celect injector I don't set injector unless I can let carb cleaner soak awhile. Tighten adjuster til you just feel it bottom and back off 2 flats.

 

Injector link will travel down. You will "feel" the plungers bottom. Just want to bottom them, not smash them.

 

This is what I used when I torqued my injectors. https://www.amazon.com/ARES-4-inch-...899&sr=8-3&keywords=newton+beam+torque+wrench

You should do the entire overhead set, do not just do the one injector.

 

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You should do the entire overhead set, do not just do the one injector.[/QUOTE]

Agree.

Had a guy doing a few injectors on this engine and didnt follow procedure. Pulled all the rockers, slapped em in and didint set the overhead. Valve bridge was off the stem and it knocked the keepers off and dropped a valve on the road test. Kablooie!!!!!!. Flip the rocker and adjust adjust the one or better yet adjust the whole thing as stated above. Your in there anyhow. Make sure it's all good.