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Home >> Chevrolet >> 1994 >> Astro Van Cargo Extended, 4.3 W, RWD >> Repair and Diagnosis >> Suspension >> Front Suspension >> Suspension - Front Torsion Bar (4WD & AWD) >> Inspection >> Ball Joint Checking >> Upper Ball Joint

Upper Ball Joint

  1. Raise and support vehicle with jackstand under lower control arm, near lower ball joint. Ensure upper control arm bumper does not contact frame. Place dial indicator against lower part of wheel rim. Push in on bottom of tire while pulling outward at top. Read dial indicator, then reverse push/pull procedure.
  2. Lateral (horizontal) deflection should not exceed .125" (3.18 mm). If deflection is excessive, replace ball joint.
  3. Check ball joint, only with ball joint disconnected from steering knuckle, to see if ball joint can be rotated by finger pressure. Replace if ball joint can be twisted.
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