ISX Rocker Shafts

[multitask]

Gents,

Might be pulling the valve cover off this weekend and doing another overhead adjustment/checking cam etc. I would like to know what signs show worn rocker shafts without pulling the entire assembly off?

Both trucks running well no leaky injectors, don’t burn oil or lose coolant, visually no blow by either only thing that bothers me is abit of a squeaky/ticking sound that can be heard once the compressor stops running. Do all CM871 sound like that? Both of them do it! Sounds like it’s coming from the actuators, did pull one of the fuel ones apart when I was doing the leak down test and it looked clean, otherwise been happy with how they are running.

Cheerssss