Power steering belt

I have a 70 Dodge Dart Swinger with 225 Slant 6. Fairly new owner and doing some repairs. Changing all 3 belts (has a/c and power steering). I cant figure out how to adjust tension on power steering pump and pulley to get new belt on. I have read to adjust this bracket (see picture) which I did but still cant move power steering pump. Also have been told to look for a square bolt to adjust tension but cant find that. Help with pictures would be great and appreciated

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