DIY Hotrod Power Steering Pump First off this can all easily be done in the truck, took me about 30 minutes the first time. Unscrew the output line, this will also empty the resivoir, so flushing the system at the same time would be a good idea. Then unscrew the fitting the output line screws into.  Here you can see the order of the things coming out, and should go back in.  In the picture the pressure relief valve