Inspection (Sienna)
- With rack mounted horizontally on "V" blocks, use dial indicator to measure rack runout. Runout should not exceed .012" (.30 mm). Check rack and teeth for wear and damage. Replace rack if necessary.
- If necessary, press oil seal and bearing from control valve housing. Coat NEW seal lip with power steering fluid. Press seal into place. Ensure oil seal is facing same direction as removed.
- Coat NEW bushing with molybdenum disulfide lithium-base grease. Using press, install bearing against oil seal in rack housing.
- If necessary, use brass bar and hammer to tap lower bearing out of rack housing. See Figure. Turn housing over, and use press to press upper bearing out of rack housing.
- If necessary, use puller to remove oil seal from rack end bushing. See Figure. Coat NEW oil seal lip with power steering fluid. Press seal into bushing.
- If necessary, use screwdriver to remove Teflon ring and "O" ring from steering rack. Coat NEW "O" ring with power steering fluid. Install "O" ring. Carefully expand NEW Teflon ring by hand, only enough to accommodate installation. Coat Teflon ring with power steering fluid. Press ring firmly into rack groove.
- If necessary, use screwdriver to remove 4 Teflon rings from control valve assembly. Coat NEW rings with power steering fluid. Slightly expand rings by hand and install in each groove. Use installer tool to slide over rings and fully seat them.