Dumb Question Thread - No Flaming Allowed

[Slideways]

Piecing some parts together for my VANOS/Valve adjust job coming up and grabbed an INA chain tensioner. First time I've handled such a part and noticed the shaft easily removes from the threaded housing. I'm guessing this is normal but wanted to put this out there for input. Also, when the shaft is inserted, I can push on the end it deflects a little, but feels somewhat "gritty". I just don't have any experience with these parts, learning now. Thoughts?

EDIT: Scratch first part of question as I found photos confirming the separation of the two parts.

EDIT2: Found a video suggestion to soak this part in oil before installing so interested to hear thoughts on that as well.

As Cubi said, TIS says to drain the oil only if reusing. For a new tensioner, install new crush washer and go.