8. CHECK PRESSURE READING WITH STEERING WHEEL TURNED TO FULL LOCK Be sure the pressure gauge valve is fully opened and the engine idling. Minimum pressure: 65 kg/cm² (924 psi, 6,374 kPa) If pressure is low, the gear housing has an internal leak and must be repaired or replaced. Min. 65 kg/cm² Open rpm SR0453 SR0454 9. MEASURE STEERING EFFORT Center the steering wheel and run the engine at idle. Using a scale, measure the steering effort in both directions. Maximum steering effort: 4 kg (8.8 lb, 39 N) If steering effort is excessive, repair the power steering unit. NOTE: Be sure to consider tire type, pressure and contact surface before making your diagnosis.