Power Steering Gear: Disassembly
- Attach gear housing to holding fixture and mount in a vise. Remove sector shaft adjusting screw lock nut and sector shaft cover bolts.
- Turn sector shaft adjusting screw clockwise until cover is removed. Remove sector shaft by tapping bottom end with mallet.
- Remove valve housing-to-gear housing bolts. Hold power piston nut with hand and turn worm shaft clockwise (counterclockwise on Celica). Remove valve assembly and power piston from gear housing.
Maximum up and down movement is 0.006" (.15 mm).
CAUTION: Ensure that power piston nut does not come off worm shaft. Do not disassemble valve body or remove power piston from worm shaft. - Install valve assembly in vise. Using a dial indicator measure ball clearance. If clearance exceeds 0.006" (0.15 mm) replace valve assembly. Install sector shaft in a vise.
- Using dial indicator, check sector shaft adjusting screw for thrust clearance of 0.001 - 0.002" (0.03 - 0.05 mm). To adjust thrust clearance, remove stake on adjusting nut. Turn adjusting nut to obtain correct thrust clearance.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Remove stake on adjusting nut to adjust sector shaft.
- Temporarily install valve assembly in gear housing and install retaining bolts. Using lock nut tool, remove lock nut and adjusting bolt from gear assembly.
- Remove and replace as needed, oil seal, "O" ring, and bearing assembly. Install lock nut and tighten. Remove valve assembly from gear housing.