OEM 2005 Scion xA Rack And Pinion

2005 Scion xA Parts Questions & Experts Answers

• Q: How to Overhaul a Power Steering Rack and Pinion Assembly on 2005 Scion xA?

  A: The power steering link assembly overhaul requires the installation of Special Service Tool: 09631-10041 to which rack and pinion teeth must be scraped for burrs if present before adding power steering fluid to the tool as you mount the rack housing and take out the tool. After selecting Service Tools 09950-60010 (09951-00210, 09951-00340, 09952-06010) and 09950-70010 (09951-07100) with a press install the rack bush oil seal to the rack bush correctly with power steering fluid applied on a new O-ring before final installation. The installation of the rack bush starts with application of power steering fluid to the lip of the rack bush oil seal and then a tape wrap to protect it from damage while pushing the bush into the rack housing with appropriate care. To complete installation apply force to the cylinder end piece and secure the hole snap ring through the use of needle nose pliers. Special Service Tool: 09631-12071 (09633-00010) should be attached to the rack housing before users create a vacuum of 53 kPa (400 mm Hg, 15.75 inch Hg) which must be maintained for about 30 seconds to perform an air tightness test. Any vacuum changes require attention to the oil seals. Apply grease to the needle roller bearing before installing a new gasket to the rack housing and ensuring matchmarks find their position and controlling the installation of the control valve housing and control valve with 2 bolts torqued to 21 Nm (214 kgf-cm, 15 ft. lbs.). Users should position the rack guide and adjacent components followed by correct placement of the spring spacer and application of Part No. 08833-00080 or equivalent to two or three threads on the rack guide spring cap using THREE BOND 1344 or LOCTITE 242 sealant. This process requires exclusion of the cap at first. The total preload adjustment requires the temporary installation of RH and LH rack ends sub-assembly while torquing the rack guide spring cap to 25 Nm (250 kgf-cm, 18 ft. lbs.) using a hexagon wrench (19 mm) before returning the cap approximately 12 degrees then using Special Service Tool: 09616-00110 to turn the control valve. Utilize Special Service Tool: 09616-00011 with a torque wrench and hexagon wrench (19 mm) to adjust the preload between 1.2 to 1.5 Nm, 12 to 15 kgf-cm, 10.6 to 13.3 inch lbs. Place sealant on two or three threads of the spring cap lock nut before fastening it to the part. Install and maintain the rack guide spring cap with a hexagon wrench (19 mm) during lock nut torquing to 28 Nm (286 kgf-cm, 21 ft. lbs.) using Special Service Tool: 09922-10010. Total preload needs to be checked again before removing the RH and LH rack ends sub-assembly. Install the 2 rack end sub-assemblies temporarily while torquing them to 60 Nm (614 kgf-cm, 44 ft. lbs.) using Special Service Tool: 09922-10010 with proper tool direction orientation. First inspect the rack and pinion end hole for clogs before applying silicon grease inside the small caliber of rack boot number two then placing it properly into the rack housing with attention to avoid boot damage or twisting. After applying this method to rack boot No.2 the clamps should be secured using Special Service Tool: 09240-00020, 09521-24010 with a clearance of 3.0 mm (0.118 inch) while repeating the same process for rack boot No.1. When installing rack boot clips with pliers, apply a combination of lock nuts and tie rod end sub-assembly LH into the rack end sub-assembly until the matchmarks align. Torque the assembly to 74 Nm (750 kgf-cm; 54 ft. lbs.). Execute the same process for installing the tie rod end sub-assembly RH. Use power steering fluid on two new O-rings before installing them to the right turn pressure tube. Next, attach the tube to the rack and pinion link assembly using Special Service Tool: 09023-38201 and apply a torque of 12 Nm (118 kgf-cm, 9 ft. lbs.). Install and torque the left turn pressure tube according to the same procedure. Reposition grommet No.2 at the rack and pinion link assembly while matching the marked positions before installing bracket No.2 with the front-facing inscribed text then tightening the 4 bolts and nuts to 74 Nm (749 kgf-cm, 54 ft. lbs.) while securing the bolt through the nut. Fasten the steering intermediate shaft through the process of precise matchmark alignment before torquing the bolt to 28 Nm (290 kgf-cm, 21 ft. lbs.). The power steering rack housing heat insulator requires 18 Nm (178 kgf-cm, 13 ft. lbs.) while the additional bolt should be torques to 35 Nm (360 kgf-cm, 26 ft. lbs.). Apply a transmission jack to support the front suspension crossmember sub-assembly then use Special Service Tool: 09670-00010 to align the holes before installing the crossmember with 4 bolts that require Bolt A torqued to 116 Nm (1,183 kgf-cm, 86 ft. lbs.) while Bolt B needs 70 Nm (714 kgf-cm, 52 ft. lbs.) torque followed by adding the crossmember with a bolt plus 2 nuts torqued to 72 Nm (734 kgf-cm, 53 ft. lbs.) and applying 4 bolts to The installation of the front suspension arm sub-assemblies lower No.1 LH and RH requires using Special Service Tool: 09023-12701 to connect the pressure feed tube assembly before torquing it to 27 Nm (273 kgf-cm, 20 ft. lbs.), followed by connecting the return hose with the clip and torquing the tube clamp bolts to 7.8 Nm (80 kgf-cm, 69 inch lbs.). The front wheels need to be tightened at 103 Nm (1,050 kgf-cm, 76 ft. lbs.) after the installation of tie rod end sub-assemblies LH and RH. The installation of the rack and pinion sliding yoke sub-assembly requires matching the marks before bolting it in place with a torque of 28 Nm (290 kgf-cm, 21 ft. lbs.). Inspect the center front wheel, install the steering column hole cover sub-assembly No.1, add power steering fluid, bleed the power steering fluid, check the power steering fluid level in the reservoir, inspect for fluid leaks, install the hood sub-assembly, adjust the hood sub-assembly, inspect and adjust front wheel alignment, install the engine under cover LH and RH, install the cowl panel sub-assembly, install the windshield wiper motor & link assembly, install the cowl top ventilator louver LH and RH, install the hood to cowl top seal, and finally install the front wiper arms LH and RH.