I had a noise during the operation of the hydraulic booster, not even noise, but a howl that was not interrupted by music. The howl was only when the engine was warming up i.e. the oil in the hydraulic system reached operating temperature. I thought that I got to replace the hydrocha, but it seems that I got off with little blood. I read our forum, and even so on the Internet, everyone refers to the replacement of the fluid. Stuffing his nose into a tank of oil, a characteristic smell of burning was discovered and in a hot state the oil drips like water.
Two liters of dextron 3 were bought, one was enough.
We pump out the oil from the tank with a syringe and remove both hoses. There is a mesh at the bottom of the tank, there was a little dirt on it, which I washed off with gasoline. Next, we raise the front of the car, I raised one wheel, but to make it easier, it is desirable to raise the second one. On the hose that goes from the steering rack, return to the tank, put on the bottle and turn the steering wheel on the engine not running to the limit in each direction five times.
I'm not sure if the liquid is one hundred percent left the system, but how much came out so much. After that, we put the tank in place, put on both hoses, fill in new oil and also, without starting the engine, turn the steering wheel all the way in each direction. Add oil almost to the full tank and start the engine. The pump fills the system to full capacity in seconds. We lower the car and add oil to the maximum level.
Such an ugly slurry was in the system.
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By the time it took no more than 40 minutes to replace. A week has passed since the replacement, peace and quiet even when you turn the steering wheel in place.
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Source: https://www.drive2.ru/l/6536062/