Can you rebuild a power steering pump?
Decide how you want to rebuild the pump. If the internal parts are not scored or worn, you can install a rebuild kit. If the reservoir is not bent or cracked but the pump needs rebuilding, you can exchange the pump and use the old reservoir. Or you can exchange the old pump assembly for a remanufactured pump assembly. via
How do you reseal a power steering pump? (video)
How do you rebuild power steering? (video)
Do power steering pumps have bearings?
As with any other pulley in the engine, the power steering pump pulley relies on a bearing to ensure that it operates correctly. Heat and friction will wear the bearings out and they will eventually need to be replaced. via