AC belt tension bolts on compressor bracket question

I should know this, but what bolts on the ac does one loosen to tension the ac belt?

I know there is the bolt that will raise of lower the compressor, but which bolts need loosening for this adjustment?

 

Never mind, it is the bolt that attached the adjuster bracket...I had not done this in a while and was briefly perplexed...yep getting a bit older...

 

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For posterity, there is a 13mm nut that you loosen in the adjuster bracket that holds the adjusting bolt's threaded adjuster (upper right in the picture). You then tighten the adjuster bolt itself from the top of the bracket to tighten the belt, and loosen it to slacken the belt. Once tensioned, I used a Krickit type guage, you then tighten the threaded adjuster retaining nut to secure the adjustment bolt in its place.