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Home >> Chevrolet >> 1987 >> Forward Control 5.7 M, Automatic, 475/M40 >> Repair and Diagnosis >> External Pages >> Different car >> Section 36 (Suspension - Front) >> Adjustments & Checking >> Ball Joint Checking >> Lower Ball Joint

Lower Ball Joint

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 1987 GMC Safari, 1987 GMC S15 Pickup, 1987 GMC S15 Jimmy, 1987 GMC Cab & Chassis, and 1987 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.
  1. A 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. If wear indicator is flush or recessed, replace ball joint.
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