OEM 2000 Toyota RAV4 Power Steering Pump

2000 Toyota RAV4 Power Steering Pump Parts Q&A

• Q: How to service and repair the Power Steering Pump on 2000 Toyota RAV4?

  A: The first step for servicing and repairing the steering pump demands careful disassembly followed by precaution against vise-related bolt overtorque. Start by testing the PS vane pump rotating torque which should be at or below 0.3 Nm along with normal smooth rotation and no strange sounds. Use Special Service Tool: 09960-10010 (09962-01000, 09963-01000) to block the vane pump pulley rotation so users can remove the pulley set nut and woodruff key. Start by separating the air control valve from its union seat followed by cutting off the pressure feed No.2 tube using the union bolt and two gaskets installation and then remove the suction port union by undoing its union set bolt with its O-ring. The technician removes the pressure port union along with its O-ring before extracting the flow control valve through snap ring pliers using a bolt (91651-60650) for spring seat extraction. The snap ring needs to be removed through a combination of two screwdrivers and protective vinyl tape covering the oil seal lip before the rear housing and wave washer and side rear plate are tapped out by a plastic hammer to detach along with the O-rings. Use a screwdriver to remove the snap ring before taking out the vane pump rotor and side front plate from the vane pump shaft while extracting both O-rings from the plate. Use pliers to remove the small and tall straight pins from the side front plate and front housing. Measure oil clearance between the vane pump shaft and bushing because this measurement should lie between 0.03 - 0.05 mm while remaining below 0.07 mm (0.0012 - 0.0020 inch to 0.0028 inch). A measurement above 0.07 mm requires replacement of the front housing and vane pump shaft. Use a micrometer to verify vane plate length and rotor height and thickness while checking that both components are at least 8.1 mm (0.319 inch) and 1.797 mm (0.0707 inch) and 14.988 mm (0.59008 inch) and to measure the rotor plate clearance that should stay under 0.03 mm (0.0012 inch). The flow control valve must be inspected by applying power steering fluid followed by a smooth fit into the valve hole while conducting air pressure checks for leakage; install a new replacement valve with identical inscribed mark (A, B, C, D, E, or F) on the front housing. Spring measurement should be at least 36.0 mm (1.42 inch) free length and requires replacement when specifications are not met. Removal of an oil seal should be done with caution through screwdriver use on a vinyl tape surface then the new oil seal needs power steering fluid on its lip before being installed using tool numbers 09950-60010 (09951-00240) and 09950-70010 (09951-07100) following proper orientation. The side front plate and front housing need power steering fluid coating before installing the longer straight pin first and then the shorter straight pin second while avoiding pin damage. Speed Up the side front plate and vane pump rotor by first coating the O-rings and then place the rotor with the marked side facing outward before putting on the cam ring which needs to align with the straight pins. Add the 10 vane plates first by placing their rounded ends outward followed by installing the side rear plate with a new O-ring and then position the wave washer into the slots of the side rear plate. The rear housing installation requires a new O-ring followed by tapping it into place with a plastic hammer before adding a new snap ring. Position the flow control spring seat containing a new O-ring correctly before adding the spring and flow control valve. Begin by installing the pressure port union with a new O-ring then torque it to 69 Nm (700 kgf-cm, 51 ft. lbs.) before proceeding to install the suction port union with a new O-ring and torque it to 13 Nm (130 kgf-cm, 9 ft. lbs.). Finally, install the pressure feed No.2 tube by torqueing its union bolt to 69 Nm (700 kgf-cm, 51 ft. lbs.) while maintaining a 2.5 degrees installation angle. Install the vane pump pulley by first placing the woodruff key then torque the nut to 43 Nm (440 kgf-cm, 32 ft. lbs.). Before remeasuring PS vane pump rotating torque you must temporarily install the 2 bolts for the pump bracket and pump front bracket.