Sector Shaft Over-Center Preload
CAUTION:
Always adjust worm shaft bearing preload before adjusting sector shaft over-center preload torque.
- Rotate stub shaft from stop-to-stop and count turns. To center steering gear, rotate shaft in reverse direction 1/2 number turned during stop-to-stop. Attach an INCH-lb. torque wrench to stub shaft. Measure sector shaft over-center preload torque by turning torque wrench in a 45-degree arc on each side of vertical center. Record highest over-center rotational torque reading.
- Rotational torque required to turn stub shaft should be 6-10 INCH lbs. (.6-1.2 N.m) greater than rotational torque specified for worm shaft. See WORM SHAFT THRUST BEARING PRELOAD .
- If adjustment is necessary, loosen adjustment on sector shaft adjuster screw until shaft has no preload. See Fig 1. Tighten adjuster screw until required preload is obtained. Ensure adjustment screw does not move and tighten adjuster screw lock nut to 20 ft. lbs. (27 N.m). Recheck preload.