Pump Pressure Test

1. Disconnect pressure hose from pump and install adapter, gauge and shutoff valve tools, or their equivalents.






2. Bleed power steering system as described under "Power Steering System Service," then start engine and allow fluid to reach a temperature of approximately 131°F.
3. Set engine speed to 1000 RPM, then completely close shutoff valve. Do not close shutoff valve for more than three seconds, or damage to pump may occur.
4. If pressure is not within specifications, repair or replace pump. Refer to "Power Steering Pressure Specifications."
5. Completely open shutoff valve. If pressure is not within minimum specifications, inspect for clogged or collapsed oil line, or clogged oil line inside gearbox and repair as necessary.
6. With shutoff valve completely open, turn wheels completely right or left. If pressure is not within minimum specifications, valve of gearbox is faulty. Gearbox must be replaced.