06 CM870 450 ISX egr tuneup

[Rawze]

CM870/air operated turbo only ...
if a person removed the air actuator from the turbo, then cranks the truck, they should be able to easily press the control arm down towards max travel with force of one or 2 finger while engine is running (this should spool up the turbo). It should then gently float back up on its own as you let go of it.

If it stays down, does not float back towards the top most of the way back when u let go of it, hangs up in places, sticks at 100% down position, or is harder to move with engine running, the turbo is toast.