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Home >> GMC >> 1990 >> S15 Jimmy RWD, Automatic, 700R4/MD8 >> Repair and Diagnosis >> Suspension >> Front Suspension >> SUSPENSION - FRONT ( C Series 2WD) >> Ball Joint Inspection >> Lower Ball Joint ("S" Series)

Lower Ball Joint ("S" Series)

  1. Wear indicator is built into the ball joint. Wear is indicated by the position of the 1/2" diameter round boss that the grease fitting is threaded into. A new ball joint has a boss projection of .050" (1.27 mm) beyond cover surface.
  2. With vehicle weight on wheels, check to see that wear indicator protrudes beyond surface of ball joint cover. Replace ball joint if wear indicator is even with housing or recessed.
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