High pressure line power steering pump

Use a flare nut wrench, not a regular wrench. Remove the hose at the steering rack and allow the fluid to drain into a pan. Remove the hose fitting at the back of the pump and install the new hose. Make sure the fittings are tightened sufficiently that you are unable to wiggle or rotate the hose end. Refill with new power steering fluid. Cycle the steering wheel all the way to the stops in both directions a number of times, slowly, to force all air bubbles out of the system. Top off the reservoir and close it up. Should take about 30 minutes.