I was inspecting my belt and decided it could use a change. But it's not like other cars I have done. It's an 89 2.6L 190E. Do I have to remove the fan? Which is the tensioner?

Here's some of the answer -

What's procedure to tighten W124 Belt?

The rest of it lies in knowing that to adjust the tensioner you turn the 13mm hollow nut sticking up by the power steering reservoir.

Sixto
95 S420
87 300SDL