To tighten belt, there are 2 bolts through the plate pump mounts on. loosen bolts, get a large pry bar, I use a digging iron, pry down on pump mounting plate, then tighten bolts. It will be necessary to adjust control rods for cab hyd controls. This is at easiest a 2 person job. I have done it by myself but it is a crock climbing in and out of cab to set control linkages.