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 MANUALSGMC1986SUBURBAN C2500, 5.7 M, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)STEERINGSTEERING GEAR - MANUALADJUSTMENTSOVER-CENTER PRELOAD ADJUSTMENT
1986 GMC Suburban C2500, 5.7 M, Standard
Over-Center Preload Adjustment
1986 GMC Suburban C2500, 5.7 M, StandardSECTION Over-Center Preload Adjustment
- With worm bearing preload adjusted, turn worm shaft slowly from stop-to-stop while counting total number of turns. Then, turn shaft half-way back to exact center position.
- Loosen lock nut and turn over-center adjustment screws in until all lash is taken out of shaft. Tighten lock nut. Rotate worm shaft slightly off center (45-90°), then attach an INCH lbs. torque wrench to worm shaft.
- Using torque wrench as a lever, rotate worm shaft back through center position and record rotating torque. Over-center rotating torque should be 16 INCH Lbs. (1.8 N.m). If rotating torque is not to specifications, repeat procedure.
RENDER: 1.0x
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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.