Hey.
The power steering pump sits in a housing that moves if i remember correctly there is a couple 13mm,s on front side and back and a 16mm near the top that it pivots on.
The alternator is under spring tension just push it down then tighten up a bolt again to hold it in place,this free's up both hands. You will have to leaver the alternator out i spekt to get the right tension on the belt, you should be able to turn it 90degrease on the longest side of the belt between your finger and thumb.
Hope this helps
