Replacing a power steering pump can be a good repair for the advanced DIYer — but it involves a lot of work. You'll need to drain and refill the power steering system, and bleed the system to purge any trapped air. A torque wrench is usually necessary, as the brass washers must be tightened to specification to prevent leaks.
If the power steering pump mounting bolts are integrated into other components, requiring extensive disassembly, consider letting a
certified technician handle this job to prevent damage to the engine.