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Home >> Ford >> 1990 >> Bronco II RWD, Standard, M5OD-R1 >> Repair and Diagnosis >> Steering >> Steering Gear - Power >> Testing >> Valve Spool Centering Testing
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Valve Spool Centering Testing

  1. Install a 0-2000 psi pressure gauge and valve assembly between power steering pump and high pressure line. Open gauge valve completely. Remove horn button from steering wheel.
  2. Attach an INCH lb. torque wrench to steering wheel nut. Power steering fluid must be at normal operating temperature and at correct level. Steering wheel must be centered.
  3. Set engine idle to 1000 RPM. Using torque wrench, rotate steering shaft to either side of center to obtain reading of 250 psi (17.5 kg/cm2 ) in each direction.
  4. Torque reading should be equal in both directions when 250 psi (17.5 kg/cm2 ) is reached. If difference between readings exceeds 6 INCH lbs. (.68 N.m), replace shaft and control assembly.
NOTE: When performing test off vehicle, take torque and pressure readings at right and left stops instead of either side of center.
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