I had a customer that got tired of replacing re-manufactured stock power steering pumps on his Land Cruiser. He wanted to use a Saginaw pump, and was removing the AIR pump at the same time. At first I was going to use a pre-made bracket that directly replaced the stock pump and mounted to the cylinder head. We were also going to have to install and idler in place of the AIR pump, so I decided to mount the P/S pump in place of the AIR pump, to turn the water pump.
I found the correct P/S pump at a wrecking yard on a ’84 Volvo. This pump is important because it has a larger pulley and a metric fitting on the pump outlet that fits the stock Toyota power steering hose.
The bracket pivots the same as the AIR pump. A separate adjuster was need because the size of the pulley did not allow the AIR pump adjuster to fit. Because of the larger diameter pulley, a special length belt was required.
The alternator belt can just be ordered for a truck without Power Steering.
The bracket was made out of 1/4 thick wide bar stock, 4″ wide at the least. It took several revisions to make a bracket that would work on bot the front and the back of the pump. This will make it easier for reproduction. For the front bracket a spacer was needed on the lower whole of .376″. This is to account for the different depths in the casting. On the rear bracket, a .25″ spacer was needed. For the front spacer, you can just knock the one off of the factory Volvo bracket if you were able to get it. For the back spacer, cutting it off of the same rod you use for the bottom pivot is an option, or knock off and trim the factory spacers. On the rear part of the factory bracket there are two spacers, to space the enitre bracket off, but the bottom one is deeper than the top.
For the bottom “pivot” I used 1″ od, 1/2″id steel rod. Think something like 3/4″ od by 1/2″ or 3/8″ id would be better suited for both the pivot and the spacers. The rod was cut to the same length as the bottom of the AIR pump, ~3.8″
To get the proper position for welding, I mounted both the front and rear brackets to the pump, slid the rod through the hole then mounted it into the mount. With the belt attached, I slid the pump into alignment with the water pump and crank then marked the rod. It could be tack welded here, but space is tight and the engine greasy. Once removed, it was talked in several places and reinstalled to check position and alignment. Once every thing checked out, I removed and welded a full bead around both sides of each bracket.
For the top adjuster/cinch bracket, I welded a piece of bar stock on the back bracket. An arc shaped bracket/slide was cut from some scrap steel. Using a section of angle bracket I marked and cut a mount that fits some holes in the block. I forgot to take any pictures of this before letting the truck go, I will try and reproduce this and get updated pictures.