Change the power steering fluid if it is excessively contaminated
The manufacturer does not provide clear recommendations on the frequency of replacing the fluid in the hydraulic system, so we recommend replacing it after six years, regardless of its condition.
The manufacturer recommends using the Pentosin Hidraulik Fluid CHF11S oil in the power steering system.
For technological reasons, Shell Donax TA D-21631 (Dexron II) working fluid is used in the hydraulic system on vehicles starting with VIN No. X9L21230040005880, and Ravenol Dexron II D with VIN No. X9L21230040006248.
Vehicles filled with Shell Donax oil have a mark on the tank – «*», and cars filled with Ravenol Dexron II D – «R», but on the latest production cars these marks may be absent.
Dexron II fluids (red) cannot be mixed with Pentosin Hidraulik Fluid CHF11S (green).
A complete fluid replacement is allowed after flushing the power steering hydraulic system.
When using Dexron II fluids, reduce the service life by half compared to the recommended one.
Turn out the tie bolt of the booster reservoir bracket.
Turn out the reservoir cap.
Remove the reservoir from the bracket and drain the fluid from the reservoir into a suitable container.
Loosen the clamp securing the outlet hose and remove the hose.
To prevent fluid from leaking, plug the hole in the nipple of the reservoir, lower the end of the drain hose into a container for draining fluid.
Start the engine and, turning the steering wheel from lock to lock in both directions three or four times, drain the old fluid, simultaneously adding new fluid..
Repeat the operation until fresh fluid appears from the drain hose.
Carefully monitor the fluid level in the reservoir, do not allow air to enter the power steering pump. This may damage the pump.
Install the reservoir in the reverse order of removal.
Add fluid to the upper mark on the reservoir cap dipstick.
Bleed the power steering system.
Bleeding the power steering system
Bleeding is necessary when air gets into the hydraulic system during repair work or when it loses its tightness during operation.
A sign of air in the system is the steering wheel jamming when trying to turn it sharply. In addition, the pump makes increased noise when turning the steering wheel, and the fluid in the reservoir usually foams.
You will need an "8" key.
With the steering wheel in the middle position, start the engine for 10-15 s.
Turn off the engine without turning the steering wheel.
Turn the steering wheel all the way to one side.
Remove the protective cap from the release valve air
Unscrew the air bleed valve on the steering gear
Without tightening the valve, turn the steering wheel to emphasis on the other side. In this case, air should come out of the valve, and then liquid.
Without touching the steering wheel, tighten the air release valve.
After adding oil to the reservoir, start the engine and turn the steering wheel in both directions until it stops, without holding it in extreme positions.
After air bubbles stop appearing in the reservoir, stop the engine.
Add liquid to the level near the upper mark on the dipstick of the reservoir cap.