If you’ve ever wanted to take a hydraulic pump apart or put one together you should know that they are pretty much universal and most of the parts are interchangeable. In fact, the design of most hydraulic pumps has not changed since they were originally designed back in the day. The biggest change to the standard tail-gate pump has been that their makeup has gone from cast iron steel to machined aluminum.
Another major change has been to the pump heads, which are now Italian made and also constructed of aluminum. The Marzocchi pump head produces more pressure than the old Fenner Stone pump heads. These increased pressure allow the cars to move a lot faster and hop a lot higher. Of course, there are performance tricks that can be done to pumps, such as porting out the pressure lines, which allows the pressure to flow more freely through the pump.
In an overview, all standard hydraulic pumps are basically the same and their assembly can be applied to virtually any hydraulic pump. Now follow along as the Cool Car’s crew in Kentucky assembles one of their off-the-shelf chrome competition pumps.