Mazda MX-5 NA silhouetteMX-5 NA

ENGINE SPEED SENSING POWER STEERING

N-18prose procedure

Fluid pressure (continued)

  1. 7
    Turn the steering wheel fully to the left and right and measure the fluid pressure generated by the gear housing. If the pressure is not within specification, replace the gear housing assembly.
    If the steering wheel is kept in the fully turned position for more than 15 seconds, the fluid temperature will rise excessively and adversely affect the oil pump.
    Front view of MX-5 with arrows indicating turning the steering wheel fully left and right.
    05U0NX-030
  2. 8
    Remove the gauge set. Install and tighten the high-pressure hose to the specified torque.
    Underside view showing steering gear housing with high-pressure hose connection point and wrench positioned for the tightening torque.
    05U0NX-031
  3. 9
    Bleed the air from the system. (Refer to page N-15.)
Gear housing fluid pressuresteering wheel fully turned
7,603—8,339 kPa (77.5—85.0 kg/cm², 1,102—1,209 psi)kPa
high-pressure hose
31 - 47N·m

STEERING WHEEL AND COLUMN

On-vehicle Inspection

Steering wheel effort

  1. 1
    With the vehicle on a hard, level surface, put the wheels in the straight-ahead position.
    Side view of MX-5 sitting level on hard surface with wheels in straight-ahead position.
    05U0NX-032
  2. 2
    Start the engine and warm the power steering fluid to 50—60°C (122—140°F).
    Hand pouring power steering fluid into reservoir bottle in engine bay.
    97U0NX-016
  3. 3
    With the engine running at idle, attach a pull scale to the outermost point of the steering wheel spoke. Then, starting with the wheels in the straight-ahead position, measure the effort required to turn the steering wheel to the left and to the right.
    Interior view showing pull scale attached to the outermost point of the steering wheel spoke to measure steering wheel effort.
    05U0NX-033
  4. 4
    If not within specification, check the following: fluid level, air in system, fluid leakage at hose or connections, function of oil pump and gear box, and tire pressure.
Steering wheel effortduring one turn of the steering wheel
23.5—35.3 N (2.4—3.6 kg, 5.3—8.0 lb)N

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