Inspection (Land Cruiser, Tacoma 4WD, Tundra & 4Runner)
- 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 bushing against oil seal in rack housing.
- If necessary, press oil seal from bearing guide nut. Coat NEW oil seal with power steering fluid and press into bearing guide nut.
- Check needle bearing of rack housing for pitting or wear. If faulty, replace rack housing. If okay, coat inside of bearing with molybdenum disulfide lithium-base grease.
- Inspect condition of control valve bearing. If worn or damaged, replace control valve assembly. If okay, coat inside of bearing with molybdenum disulfide lithium-base grease.
- Check inside of cylinder end stopper bushing. If faulty, replace bushing. If okay, coat inside of bearing with molybdenum disulfide lithium-base grease.
- 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.
- If necessary, use screw extractor to remove union seats from side of control valve housing. Carefully tap NEW seats into place.