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 ad juster screw until required preload is obtained. Ensure adjustment screw does not move and tighten adjuster screw lock nut to 36 ft. lbs. (49 N.m). Recheck preload.