only instance I can think of ^
Thanks @webby, I figured nearly no one had done it specifically. I'm going to try and get the updated VTC Actuator part installed under the warranty issue I had opened for the cold start grind and have them do it then. Will let you guys know how it goes.
Are you referring to the timing chain or serpentine belt? Timing chain should not need any maintenance.
I am referring to the timing chain. I have had the cold start grind noise caused by the VTC Actuator not locking for years, and the result has been a chain tensioner that needs replaced in order to maintain proper chain tightness as it runs. This is a normal maintenance item on every motor with a timing chain, you just don't normally need to do it before 200k miles unless there is something causing it to loosen. You are correct that the chain itself should not need maintenance unless the engine was run while low on oil.