Steering Pump Pressure

Before starting test, check belt tension, pulley and tire pressure. Attach Pressure Gauge (ST27091000 ) between pump and steering gear. Open shutoff valve on pressure gauge, and bleed air. Allow fluid temperature to rise to 140-176°F (60-80°C).
CAUTION: Warm engine with shutoff valve fully opened. If engine is started with shutoff valve closed, oil pressure in oil pump will increase to relief pressure, producing abnormal rise in oil temperature.
Idle engine at 1000 RPM. Check pressure with steering wheel turned to left and right positions. See HYDRAULIC PRESSURE SPECIFICATIONS . DO NOT hold steering wheel in a locked position longer than 15 seconds.
If oil pressure is less than standard pressure, slowly close shutoff valve and check pressure. If pressure reaches standard pressure, gear is damaged. If pressure remains less than standard pressure, pump is damaged.
CAUTION: DO NOT close shutoff valve longer than 15 seconds.
If oil pressure is higher than standard pressure, check oil pump flow control valve. After checking hydraulic system, remove pressure gauge, and add fluid as necessary. Bleed air from system.

HYDRAULIC PRESSURE SPECIFICATIONS