OEM 2007 Toyota Matrix Power Steering Pump

2007 Toyota Matrix Parts Questions & Experts Answers

• Q: How to service and repair the power steering pump on 2007 Toyota Matrix?

  A: The procedure for servicing and repairing power steering pumps starts with removing the front wheel right side followed by draining power steering fluid and removing the right side engine under cover. Start the power steering pump service by removing the fan and generator V belt alongside disconnecting oil reservoir to pump hose No. 1 with its clip and separating the pressure feed tube assembly with Special Service Tool: 09023-38401 followed by unbolt and unclamping the pressure feed tube. The vane pump assembly removal starts with disconnecting the oil pressure switch connector before removing two bolts and nuts. Start vane pump bracket rear disassembly by removing the bolt followed by using Special Service Tool: 09630-00014 (09631-00132) to fix the vane pump assembly in a vise for disassembly. First remove the power steering suction port union bolt with its O-ring and subsequently disconnect the flow control valve with its compression spring through removal of the pressure port union and its O-ring. Handle the oil pressure switch with caution before removing the vane pump housing rear by taking away 4 bolts and the O-ring from the vane pump housing front. Detach the w/ pulley shaft sub-assembly through snap ring and vane plate removal and subsequent removal of the vane pump rotor. To proceed you should pull out the vane pump cam ring and the vane pump side plate front plus their O-rings. Employ Special Service Tool: 09631-10030 and strike the vane pump housing oil seal with a hammer to extract it while protecting the pump housing from damage. Use a micrometer and caliper gauge to check the oil clearance until it meets the standard and maximum clearance specifications. Use a micrometer to measure the height of the vane pump rotor and measure thickness of all vane pump plates before evaluating the rotor groove-vane plate clearance. Check if the flow control valve operates without problems and evaluates its leakage rate before measuring the flow control valve compression spring free length. The vane pump assembly requires new components if any component exceeds specification or shows damage. To reassemble the vane pump housing install a new oil seal prepared with power steering fluid by using Special Service Tools 09950-60010 (09951-00280), 09950-70010 (09951-07100) and a press tool according to proper orientation. The vane pump shaft insertion needs to be done slowly to safeguard the oil seal lip before side plate front and cam ring installation with the dent marks correctly positioned. Add the vane pump rotor to its position afterwards applying power steering fluid to the vane plates. After using a snap ring expander to add a fresh snap ring you should install the rear vane pump housing while utilizing a new O-ring. Perform this task by maintaining correct alignment and torquing it to 22 Nm (220 kgf/cm, 16 ft. lbs.). Check the pump preload through rotation tests and torque measurement that must be less than or equal to 0.27 Nm (2.8 kgf/cm, 2.4 ft. lbs). Grasp the power steering oil pressure switch after installing its new O-ring and set torque to 21 Nm (210 kgf/cm, 15 ft. lbs.), then proceed to fasten the flow control valve along with all its attaching components while maintaining correct torque torques for each interconnection. After installing two bolts and nuts that secure the vane pump assembly you should connect the oil pressure switch connector and use Special Service Tool: 09023-38401 during pressure feed tube assembly reassembly at correct torque values. The procedure includes reattachment of the oil reservoir to pump hose No.1 together with the reinstallation of the fan V belt and generator followed by front wheel RH, power steering fluid addition, system bleeder operation, leak inspection and the engine under cover RH installation.