Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1985FORWARD CONTROL 6.2 J, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)SUSPENSIONFRONT SUSPENSIONSUSPENSION - FRONT (2WD COIL)ADJUSTMENTS & CHECKINGBALL JOINT CHECKINGUPPER BALL JOINT
1985 Chevrolet Forward Control 6.2 J, Standard
Upper Ball Joint
1985 Chevrolet Forward Control 6.2 J, StandardSECTION Upper Ball Joint
- Upper ball joint stud is spring-loaded in its socket to minimize looseness and compensate for normal wear. Raise vehicle and support at lower control arm. Remove front wheel assembly. Inspect ball joint stud for lateral shake or stud rotation in socket.
- To check for lateral shake, grip hub assembly at top and bottom, then move spindle in and out. If stud has any lateral shake, replace ball joint. To check for stud movement, first remove stud nut, then detach steering knuckle from ball joint stud using ball joint separator.
- With finger pressure only, attempt to twist stud in its socket. Replace ball joint if stud can be twisted. Inspect upper ball joint rubber grease seal for cuts or tears. Replace ball joint if damage is found.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.