Bottom line . . if the 24mm bolt is not tight it will never move the tensioner spring. I'm fairly sure it's a normal CW thread.
You need to tighten the 24mm first, and then tighten up the locknut behind, as per the picture posted by Arctic2.
The assembly looks like the attached pic (from RAVE), so you cannot remove the assembly with the engine in the car
You need to tighten the 24mm first, and then tighten up the locknut behind, as per the picture posted by Arctic2.
The assembly looks like the attached pic (from RAVE), so you cannot remove the assembly with the engine in the car