Oil Pressure Check

1. CONNECT PRESSURE GAUGE

(a) Using SST, remove the pressure line from the PS pump.

SST 09631-22020

(b) Connect the gauge side of the pressure gauge to the PS pump.

(c) Connect the valve side of the pressure gauge to the pressure line.

(d) Bleed the system. Start the engine and turn the wheel fully in both directions two or three times.

(e) Check that the fluid level is correct.

Oil Temp

Oil Temp

2. CHECK THAT FLUID TEMPERATURE IS AT LEAST 80° C (176° F)

Min. 65 kg/cm2

Lock Position if Closed

Min. 65 kg/cm2

Lock Position rpm

Pressure Differential Less than 5 kg/cm2

Open

Pressure Differential Less than 5 kg/cm2

Open

bt rpm sromi sr0447

3. START ENGINE AND RUN IT AT IDLE

4. CHECK FLUID PRESSURE READING WITH VALVE CLOSED

Close the pressure gauge valve and observe the reading on the gauge.

Minimum pressure: 65 kg/cm2 (924 psi, 6,374 kPa)

NOTE: Do not keep the valve closed for more than 10 seconds.

If pressure is low, repair or replace the PS pump.

5. OPEN VALVE FULLY

6. CHECK AND RECORD PRESSURE READING AT 1,000 RPM

7. CHECK AND RECORD PRESSURE READING AT 3,000 RPM

Check that there is less than 5 kg/cm2 (71 psi, 490 kPa) difference in pressure between the 1,000 rpm and 3,000 rpm checks.

If the difference is greater, repair or replace the PS pump flow control valve.

Min. 65 kg/cm2

Open

Open

Min. 65 kg/cm2

tb rpm

SR044i

SR044i

CHECK PRESSURE READING WITH STEERING WHEEL TURNED TO FULL LOCK

Be sure the pressure gauge valve is fully opened and the engine idling.

Minimum pressure: 65 kg/cm2 (924 psi, 6,374 kPa)

If pressure is low, the gear housing has an internal leak and must be repaired or replaced.

MEASURE STEERING EFFORT

Center the steering wheel and run the engine at idle.

Using a scale, measure the steering effort in both directions.

Maximum steering effort: 4 kg (8.8 lb, 39 N)

If steering effort is excessive, repair the power steering unit.

NOTE: Be sure to consider tire type, pressure and contact surface before making your diagnosis.

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