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Fluid Pressure Inspection

WARNING: This page is about a different car, the 2005 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
  1. Assemble the SSTs  as shown in Fig 1.
    Fig 1: Assembling SSTs
    G03700626Courtesy of MAZDA MOTORS CORP.
  2. Disconnect the pressure pipe from the steering gear, and connect the SSTs  .

    Tightening torque 

    1. 29.4-44.1 Nm 
      1. {3.00-4.49 kgf.m, 21.7-32.5 ft.lbf} 
    Fig 2: Connecting SSTs To Pressure Pipe
    G03700627Courtesy of MAZDA MOTORS CORP.
  3. Bleed the air from the system.
  4. Open the gauge valve fully.
  5. Start the engine and turn the steering wheel fully left and right to raise the fluid temperature to 50-60 °C {122-140 °F}. 
  6. Close the gauge valve completely.
  7. Increase the engine speed to 1,000-1,500 RPM  and measure the fluid pressure generated by the oil pump.
    • If the pressure is not within the specification, repair or replace the oil pump component.
    CAUTION:
    • If the valve is left closed for more than 5 seconds, the fluid temperature will rise excessively and adversely affect the oil pump.

    Oil pump fluid pressure 

    1. 8.23-8.92 MPa 
      1. {84.0-90.9 kgf/cm 2  , 1,200-1,290 psi} 
      Fig 3: Measuring Fluid Pressure Generated By Oil Pump
      G03700628Courtesy of MAZDA MOTORS CORP.
  8. Open the gauge valve fully and increase the engine speed to 1,000-1,500 RPM  .
  9. Turn the steering wheel fully to the left and right, then measure the fluid pressure generated at the gear housing.
    • If the pressure is not within the specification, repair or replace the steering gear component.
    CAUTION:
    • If the steering wheel is kept in the fully turned position for more than 5 seconds, the fluid temperature will rise excessively and adversely affect the oil pump.

    Gear housing fluid pressure 

    1. 8.23-8.92 MPa 
      1. {84.0-90.9 kgf/cm 2  , 1,200-1,290 psi} 
      Fig 4: Measuring Fluid Pressure Generated At Gear Housing
      G03700629Courtesy of MAZDA MOTORS CORP.
  10. Remove the SSTs  . Install and tighten the pressure pipe to the specified torque.

    Tightening torque 

    1. 29.4-44.1 Nm 
      1. {3.00-4.49 kgf.m, 21.7-32.5 ft.lbf} 
  11. Bleed the air from the system.
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