Gear Fluid Pressure Test

Ensure pump pressure is within specification. To measure steering gear fluid pressure, open gauge/valve completely. Increase engine speed to 1000-1500 RPM.
Turn steering wheel from lock-to-lock. Gauge pressure must be within specification. See HYDRAULIC SYSTEM FLUID PRESSURE SPECIFICATIONS table. If pressure is less than specification, steering gear is defective.

HYDRAULIC SYSTEM FLUID PRESSURE SPECIFICATIONS ⁽¹⁾

Application

Pressure psi (kg/cm² )

MPV

1066-1138 (75-80)

MX-6 & 626

2-Wheel Steering

1066-1138 (75-80)

4-Wheel Steering

Front

1173-1280 (83-90)

Rear

More than 427 (30)

Protege & 323

1067 (75)

RX7

1138-1209 (80-85)

929

1066-1138 (75-80)

⁽¹⁾	Specifications are measured at 1000-1500 RPM, with fluid temperature at 122-140°F (50-60°C).

Fig 1: Connecting Pressure Gauge (Except 4-Wheel Steering)

Courtesy of MAZDA MOTORS CORP.