Honda Accord sedan with constant flow hydraulic power steering system, the system mainly by the power steering device, steering steering mechanism and steering gear composed of three parts. Power steering devices include power steering, power steering pumps, storage tanks, oil hoses and piping. The steering mechanism includes a steering wheel (including the driver's seat airbag assembly) and a steering shaft. The steering mechanism includes a steering arm, a steering rod, a damper and a knuckle arm. Power steering device of the steering gear for the rack and pinion, steering pump for the rotor type.
    Power steering system failures are generally fault, steering noise and oil leakage. General failures include turning heavy, steering shocks, turning ineffective and turning backwards. Some of these faults may be related to power steering, steering and steering. The following describes mainly due to the failure of the power steering device caused by the failure of the steering control mechanism and the steering drive caused by failure of the failure of the general vehicle to analyze the failure.
    First, the general failure
    (A) turned heavy
    1. Symptom: When turning, turn the steering wheel feel heavy effort. When the steering force of the steering wheel is checked, its value is greater than 30N.
    2. Failure analysis
    (1) check the oil tank is lack of oil, power steering pump drive belt is skidding, and should confirm the system without air.
    (2) Check the pressure of the power steering pump. In the case of pressure control valve and shut-off valve fully open when the measurement of idle hydraulic pressure, oil pressure should be equal to or slightly less than 1500kPa, or should check the power steering gear and power steering pump between the oil and return lines and soft Whether the tube is clogged, aged or deformed. If the tubing is normal, the steering valve is faulty.
    (3) If the measured power is turned to the normal pressure of the pump, the pressure of the pump when the pressure control valve and the shut-off valve are fully closed, the value should be 7200 ~ 7800kPa. If the unloading pressure is too low, you should check the flow control valve and pump assembly is normal.
    (4) If the above unloading pressure is normal, check the steering wheel to the left and right when the rotation force, the difference between the two should be ≤ 2.9N, or should check the cylinder pipe A and B are deformed or Improper installation. If the cylinder line is normal, check whether the rack shaft is bent and deformed. Whether the rack guide plug is tightly adjusted. If the rack guide plug adjustment is normal, then the steering control valve failure.