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Home >> GMC >> 1996 >> Jimmy 4D Utility, AWD >> Repair and Diagnosis >> Steering >> Steering Gear >> Manual Recirculating Ball Steering System >> Adjustments >> Over-Center Preload

Over-Center Preload

  1. With worm bearing preload adjusted, turn steering wheel slowly from stop-to-stop while counting total number of turns. Turn steering wheel back to the exact center position.
  2. Loosen pitman shaft adjuster screw lock nut (located in center of pitman shaft side cover) clockwise until all lash is taken out between ball nut and sector teeth. See Figure. Tighten lock nut. See TORQUE SPECIFICATIONS . Rotate steering wheel slightly off center position then attach an INCH-pound torque wrench to steering wheel nut.
  3. Rotate steering wheel back through center position and note rotating torque. Rotating torque should be 4-10 INCH lbs. 5-1.1 N.m) in excess of worm bearing preload. Maximum torque should not exceed 16 INCH lbs. (1.8 N.m). If rotating torque is not within specification, adjust pitman shaft adjuster screw.
    CAUTION: If maximum torque is exceeded, rotate pitman shaft adjuster screw counterclockwise and adjust by rotating lock nut clockwise.
  4. After all adjustments are completed, install pitman arm onto pitman shaft. Ensure pitman arm-to-pitman shaft reference marks are aligned. Install pitman arm spring washer and nut. On 4WD models, install flexible coupling and flexible coupling-to-intermediate shaft retaining screw. Tighten bolts and nuts to specifications. See the TORQUE SPECIFICATIONS  table.
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