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Pump Fluid Pressure Test

  1. Disconnect pressure line from steering gear and steering pump. Connect pressure gauge/valve between steering pump and steering gear. See Fig 1 . Bleed air from system.
  2. Completely open valve. Start engine and operate at idle. Turn steering wheel from lock to lock to increase fluid temperature to 122-140°F (50-60°C). To measure pump fluid pressure, close gauge valve completely.
  3. Increase engine speed to 1000-1500 RPM. Measure oil pump fluid pressure. Ensure pump pressure is within specification. See HYDRAULIC SYSTEM FLUID PRESSURE SPECIFICATIONS  table. If pressure is not within specification, replace pump.
CAUTION: DO NOT leave gauge valve closed for more than 15 seconds, or pump may be damaged.
Fig 1: Connecting Pressure Gauge/Valve
G101318Courtesy of MAZDA MOTORS CORP.
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