All Except Ford Motor Co.
- With belt tension correct, disconnect power steering pump pressure hose, keeping hose end raised to prevent excess fluid loss. Connect pressure hose of power steering pressure gauge to power steering pump fitting. Connect a second pressure hose from valve side of tester to steering gear inlet. Open valve fully and run engine until fluid obtains normal operating temperature. Check fluid level and add fluid if necessary.
- On all models except Chrysler Corp., note pressure reading with valve open and engine idling. This pressure should be 80-125 psi. If pressure is in excess of 200 psi, check hoses for restrictions and poppet valve (in gear) for proper assembly. On all models, close tester valve fully and re-open three times. Record highest pressure noted each time.CAUTION: Do not hold valve closed for more than five seconds as pump damage may result.
If pressures are within specifications and range of readings is within 50 psi, pump is operating satisfactory.
- If pressures recorded are high, but do not repeat within 50 psi, flow control valve is sticking. If pump performance is to specifications, turn steering wheel to both stops with valve open and note highest pressures. Compare readings with maximum pump output.CAUTION: Do not hold wheel against stops over 5 seconds as pump may be damaged.
If pump output cannot be met in either side of gear, gear is leaking internally. Shut off engine and remove tester. Reconnect all hoses and recheck fluid level.