Valve Spool Centering
- Install a 0-2000 psi pressure gauge and valve assembly between power steering pump and high pressure line. Open gauge valve completely, and remove horn button from steering wheel. Attach an INCH lb. torque wrench to steering wheel attaching nut.
- Power steering fluid must be at normal operating temperature and at correct level. Steering wheel must be in centered position and engine at normal operating temperature.
- Set engine idle to 1000 RPM. Using torque wrench, rotate steering shaft to either side of center to obtain gauge reading of 250 psi (17.5 kg/cm2 ) in each direction.
- 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), steering gear must be removed and shaft and control assembly replaced.
NOTE:
When performing test off vehicle, use same procedure, except take torque and pressure readings at right and left stops instead of either side of center.