OEM 2006 Scion tC Rack And Pinion

2006 Scion tC Rack And Pinion Parts Q&A

• Q: How to reassemble the Rack And Pinion on 2006 Scion tC?

  A: The rack and pinion reassembly process requires application of both power steering fluid and molybdenum disulfide lithium base grease, MP grease or silicon grease on the indicated parts. The power steering cylinder tube oil seal requires proper installation at a 15 degrees angle because it protects against damage. Insert the oil seal without tool rotation by using Special Service Tool: 09631-00200. Set aside a new O-ring for the rack and pinion after expanding the new oil seal with caution while lubricating it with power steering fluid. The tricky process requires two steps. The rack teeth ends should get molybdenum disulfide lithium base grease treatment, then the Special Service Tool: 09631-20102 can be positioned on the rack and pinion before its rack housing installation. The cylinder end stopper installation requires vinyl tape on the RH side of the power steering rack and power steering fluid application to the new oil seal followed by proper assembly. The installation of the cylinder end stopper requires applying grease to its inner bush surface followed by using Special Service Tool: 09631-20120 to torque the stopper to 122 Nm (1,244 kgf-cm, 90 ft. lbs.). Test air tightness by using Special Service Tool: 09631-12071 (09633-00010) to measure vacuum pressure stability. To install the power steering control valve upper bearing requires applying grease followed by installing the upper oil seal and bearing using Special Service Tools: 09950-70010 (09951-07150) and 09950-60010 (09952-06010, 09951-00180, 09951-00300). Before fitting new valve spacers into the control valve, expand each of them by applying power steering fluid before installation. The control valve must be inserted into the valve housing without damaging the spacers or the oil seal lip. Secure the control valve housing to the rack and pinion housing through installing 2 bolts while performing torque at 18 Nm (185 kgf-cm, 13 ft. lbs.) with a new gasket. Before installing the rack guide with spring, apply grease on both components and rack guide contact surfaces while using sealant to address rack guide spring cap threads. Tighten the cap with a 24 mm straight hexagon wrench to inspect total preload by retightening followed by cap loosening when the rack and pinion ends are installed. Adjust the force on the rack and steering column through complete rotation by using Special Service Tool: 09616-00011 to reach a preload measurement between 0.9 - 1.6 Nm (9.2 to 16.3 kgf-cm, 8.0 to 14.2 inch lbs.). Mount the rack and pinion end sub-assembly using Special Service Tool: 09922-10010 while applying MP grease to the ball joint and installing it with 73 Nm (744 kgf-cm, 54 ft. lbs.) torque. The installation requires two new claw washers. Use a brass bar along with a hammer to secure stake the washers through the rack and pinion hole until it remains clear. Apply silicon grease on the No. 2 rack and pinion boot then install a new clamp before checking the correct installation without any accidental damage. The same procedure must be applied to install the No. 1 rack and pinion boot along with its clamps. The final step includes installing rack and pinion boot clips followed by using Special Service Tool: 09616-00011 to evaluate the rack boot movement. Screw the lock nut along with tie rod end to the rack end while matching the marks before repeating the same procedure on the right-hand side.