(3S-FE, 4S-FE)
a) Using a special tool, disconnect the discharge line from the pump body.
b) Using adapters, connect the pressure gauge as shown in the figure
Attention:
- During installation, the pressure gauge valve must be open.
- When connecting the adapters, do not apply too much force to avoid stripping the threads.
(ZS-T)
a) Unscrew the union bolt and remove the gasket.
The text is taken from the specified website ToyotaMan
b) Using adapters, connect the pressure gauge as shown in the figure.
Attention: during installation the pressure gauge tap must be open.
2. Bleed the power steering system.
3. Warm up the working fluid.
a) Start the engine and set the idle speed
b) Turn the steering wheel from lock to lock two or three times to warm up the working fluid.
- Working fluid temperature - 75 - 80°C
4. Check the working fluid pressure with the pressure gauge valve closed.
Close the pressure gauge valve and measure the pressure.
Minimum allowable pressure:
- 4S-FE — 6000-6500 kPa
- 3S-FE (2WS) – 6500 - 7000 kPa
- 3S-FE (4WS) - 8500 - 9000 kPa
- ZS-T - 7000 - 7500 kPa
Attention:
- Do not keep the tap closed for more than 10 seconds.
- Do not allow the working fluid temperature to become too high.
5. Check the liquid pressure with the pressure gauge valve open.
a) With the engine idling, open the tap fully.
b) Measure the fluid pressure at engine speeds of 1000 rpm and 3000 rpm.
- Maximum permissible pressure difference is 500 kPa
Note: Do not turn the steering wheel.
6. Check the fluid pressure when turning the steering wheel to the extreme position.
With the engine idling and the valve fully open, turn the steering wheel to the maximum angle.
Minimum allowable pressure:
- 4S-FE — 6000 - 6500 kPa
- 3S-FE (2WS) – 6500 - 7000 kPa
- 3S-FE (4WS) - 8500 - 9000 kPa
- ZS-T - 7000 - 7500 kPa
Attention:
- Do not hold the steering wheel in the extreme position for more than 10 seconds.
- Do not allow the working fluid temperature to become too high.
7. Connect the discharge pipe to the pump body.
a) Disconnect the pressure gauge.
b) (3S-FE, 4S-FE)
Connect the discharge line to the pump body.
- Tightening torque - 45 Nm
Note: Be careful not to apply excessive force when tightening.
b) (ZS-T)
Install the gasket and tighten the union bolt.
- Tightening torque - 52 Nm
8. Check the level of working fluid in the tank and top up if necessary.
9. Bleed the power steering system.