When refilling or filling the hydraulic system, use only automatic transmission fluid (ATE) that meets FORD specification ESPM-2C-166H
Caution: Do not shake the automatic transmission fluid, as this will cause air bubbles to form in it.
Note: The illustrations do not apply to FORD SCORPIO vehicles.
Removal air
Fill the expansion tank up to the MAX COLD mark with new, clean transmission fluid without air bubbles.
Caution: To avoid the formation of air bubbles, pour the transmission fluid slowly.
Start the engine and let it idle. Slowly turn the steering wheel 3-4 times left and right from lock to lock.
Ask an assistant to monitor the fluid level in the expansion tank. The fluid level should not fall below the MIN mark; if necessary, it should be replenished.
Repeat the process until the release of air bubbles in the expansion tank stops.
Check the hydraulic system for leaks. Check for oil loss through pipeline connections, rack seals and valve bodies.
Turn off the engine, check again and, if necessary, top up the fluid level in the expansion tank.
Note: As long as the vehicle is stationary, a slight noise may be heard from the power steering when the engine is running after air has been removed.
In case of strong noise interference, remove air from the hydraulic system using a hand vacuum pump.
At the service station, instead of the cover on the expansion tank, an adapter "1" with a vacuum hose is installed. A suitable adapter can be made independently from a spare cover.
Connect the vacuum pump.
Start the engine and slowly turn the steering wheel to the right almost to the stop.
Turn off the engine and use a vacuum pump to create a vacuum of 0.5 bar until the air is completely removed from the system.
Note: Maintain the vacuum for at least five minutes. If the vacuum drops, restore it using a vacuum pump.
Finally, release the vacuum. Slowly turn the steering wheel almost to the left until it stops and repeat the air removal operations.
Remove the vacuum pump, check and top up the fluid level in the expansion tank if necessary. Screw on the expansion tank cap.
Start the engine and turn the steering wheel from lock to lock. If noise interference increases, repeat the air removal operations.
If the noise level is still high, leave the car overnight and repeat the air bleeding operation the next day.
The full article is on the online resource: FORDBOOK.ru