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Worm Bearing Preload

NOTE: This procedure adjusts amount of compression force exerted by the worm shaft on worm shaft conical bearing.
  1. Remove steering gear. See STEERING GEAR under REMOVAL & INSTALLATION  . Rotate stub shaft in both directions to drain fluid from steering gear. Using punch, remove adjuster plug lock nut from adjuster plug near stub shaft. See Figure .
  2. Using Spanner Wrench (J-7624), tighten adjuster plug until firmly seated in housing. See Fig 1 . This requires 22 ft. lbs. (30 N.m) of torque. Mark gear housing at a place opposite one hole in adjuster plug. Measure back (counterclockwise) 1/2" (13 mm) from first mark, and then make another mark on housing.
  3. Turn adjuster plug counterclockwise until hole in adjuster plug is aligned with second mark on housing. Hold adjuster plug to maintain alignment with index mark. Tighten adjuster plug lock nut securely.
Fig 1: Aligning Adjuster Plug
G91I11336Courtesy of GENERAL MOTORS CORP.
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