OEM 2001 Toyota Sienna Power Steering Pump

2001 Toyota Sienna Parts Questions & Experts Answers

• Q: How to service and repair the power steering pump on 2001 Toyota Sienna?

  A: Start the power steering pump service work by disconnecting the return hose followed by preventing fluid leaks on the drive belt. Start by detaching the PS gear assembly tube with Special Service Tool: 09023-38400 after removing the bolt alongside 2 clamp plate set nuts and 2 clamp plates and 2 holders from the pressure feed tube. Disassemble the drive belt through Special Service Tool: 09249-63010 by unlocking bolts "A" and "B." Remove the PS vane pump together with the pressure feed tube while disconnecting the oil pressure switch connector and loosening bolt "A" just enough to be able to disassemble the unit but keeping bolt "A" inaccessible. Keep the oil pressure switch safe from harm while carefully removing it from the union bolt and then discard the bolt, seal and pressure feeding tube. The pressure feed tube needs to be attached with a new gasket to the PS vane pump assembly using the union bolt while making sure the stopper contacts the front bracket before torquing to 52 Nm (530 kgf-cm, 38 ft. lbs.). Fasten the oil pressure switch to the union bolt while using a torque of 21 Nm (210 kgf-cm, 15 ft. lbs.) but guard against the oil seal attaching to the connector. The PS vane pump assembly needs temporary installation via bolts "A" and "B" before drive belt tension adjustment and torque of bolt "A" to 29 Nm (300 kgf-cm, 22 ft. lbs.) when using Special Service Tool: 09249-63010 then system completion through torquing bolt "B" to 43 Nm (440 kgf-cm, 32 ft. lbs.) with careful connector installation. To attach the pressure feed tube to PS gear assembly use Special Service Tool: 09023-38400 while torquing it to 27 Nm (280 kgf-cm, 20 ft. lbs.) with the tool kept parallel to the torque wrench. Secure the pressure feed tube with 2 clamp plates and 2 holders by tightening a bolt before fixing the 2 clamp plate set nuts at 7.8 Nm (80 kgf-cm, 69 inch lbs.). The completion of the installation process requires a return hose connection with its clip while performing a power steering system bleeder operation.