OEM Scion xB Power Steering Pump

Scion xB Power Steering Pump Parts Questions & Experts Answers

• Power Steering Pump
  44310-52090
  Q: How to service and repair the power steering pump on Scion xB?

  A: The power steering pump service and repair procedure starts by removing front wiper arms along with their left hand (LH) and right hand (RH) sides and the hood to cowl top seal and cowl top ventilator louvers from both LH and RH locations and the windshield wiper link assembly, cowl panel sub-assembly before removing the vane pump oil reservoir cover. The power steering fluid should be drained after which both the front wheel (RH) and engine under cover (RH) must be removed. Disassemble the pressure feed tube assembly through the use of Special Service Tool: 09023-12701 before unbundling the return hose and oil pressure sensor connector. The vane pump stay rear can be removed by first disassembling the bolt and stay rear components before removing the heat insulator. Alternatively, remove vane pump assembly bolts B and C before unscrewing bolt A followed by securing the vane pump assembly in a vise through the use of Special Service Tool: 09630-00014 (09631-00132). Afterward, you can remove vane pump oil reservoir cap sub-assembly and the oil reservoir assembly while delicately extracting the O-ring. The removal process includes taking out the pump bracket front alongside the flow control valve, power steering oil pressure sensor as well as the vane pump housing rear, w/pulley shaft sub-assembly, vane pump rotor, and cam ring and side plate front while ensuring proper removal of all installed O-rings and housing oil seal that prevents damage to the housing front. The vane pump housing front should be checked for oil clearance between its shaft and bush as well as for rotor and plate dimensions and flow control valve functionality with leak check and compression spring extension along with pressure port union integrity. Place the new housing oil seal which must be aligned correctly with power steering fluid when assembling the pulley shaft sub-assembly and side plate front and cam ring and vane pump rotor and snap ring. The installer must check the vane pump housing rear preload and rotating torque measurements before installing the power steering oil pressure sensor, flow control valve and pump bracket front along with the vane pump oil reservoir assembly and cap sub-assembly while torquing all bolts to their specified values. Finalize the installation of the vane pump assembly after adjusting the V belt tension and by using Special Service Tool: 09023-12701 to properly fit the return hose and oil pressure sensor connector. After adjusting the vane pump V belt users must examine the Drive Belt deflection along with its tension while adding power steering fluid before bleeding the system and inspecting fluid leaks. The installation includes putting back the engine under cover (RH) and front wheel (RH) and all components they removed while maintaining every torque standard along the way.