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Home >> Chevrolet >> 1990 >> Step Van 7.4 N, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 10 (Suspension - Front (4WD) - Torsion Bar) >> Ball Joint Inspection >> "T" Series

"T" Series

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 1990 GMC S15 Pickup, 1990 GMC S15 Jimmy, 1990 GMC Pickup, 1990 GMC Cab & Chassis, and 1990 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise and support vehicle with jack stands under lower control arms. Ensure stands are as close as possible to each lower ball joint and upper control arm bumper does not contact frame.
  2. To check upper ball joint for horizontal play, place dial indicator stem against lowest outboard point of wheel rim. Rock wheel in and out. Horizontal play should not exceed .125" (3.18 mm). If upper ball joint stud can be rotated, replace ball joint.
  3. To check lower ball joint, place dial indicator on center of wheel hub dust cover. Pry between lower control arm and outer wheel bearing race portion of hub assembly. Horizontal play should not exceed .125" (3.18 mm). If lower ball joint is within specification, check upper ball joint for excessive play.
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