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Hydraulic System Pressure Test

  1. Disconnect high pressure hose at power steering pump. Install Pressure Gauge (J-26357 ) between power steering pump and steering gear. See Fig 1 . Open valve and bleed air from system. See HYDRAULIC SYSTEM BLEEDING  under LUBRICATION.
    Fig 1: Installing Pressure Gauge
    G59043Courtesy of NISSAN MOTOR CO., U.S.A.
    NOTE: DO NOT hold steering wheel at or near lock position for longer than 15 seconds.
  2. Check fluid level. Start engine, allowing reservoir fluid temperature to reach 140-176°F (60-80°C). Check pressure with wheel turned to full-lock position on left and right sides. Pump pressure should be 1109-1194 psi (78-84 kg/cm2 ).
  3. If pressure is lower than specification, slowly close shutoff valve and note pressure. DO NOT close shutoff valve for more than 15 seconds. If pressure now reads within specification, power steering pump is okay and steering gear is defective. If pressure reading is still not within specification, power steering pump is defective. Remove pressure gauge and bleed system.
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