Missing bolt

[drjd92]

Hi and thanks ahead
Recently got my hands on a beautiful lc100 4.2td
She runs great , however did a quick service and noticed when engine is running the housing of the top spool of the timing belt has a rattle. When I press my hand against it. The rattle stops. It’s not super loud I’m just super pedantic. I think there is a bolt missing on the housing, is that an actual bolt missing or is the very minute rattle normal

 

[Fj80oregon]

If there is a hole for a bolt put one in Use a pick or smaller diameter bolt to see how deep it is grab one from the hardware store and install. If you post in the diesel section you will probably get a better answer than mine.