EHPS hydraulic system, filling and bleeding, A20NFT/LHU
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EHPS hydraulic system, filling and bleeding, A20NFT/LHU
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Important
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The EHPS system must not be run dry. Do not reuse drained fluid. Fill the hydraulic system with special fluid.
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The electro-hydraulic power steering system is bled automatically when the engine is running. Due to the afterflow in the hydraulic system the level in the electro-hydraulic power steering unit reservoir will fall. After the following procedure has been performed a small quantity of air may still remain in the system. This is not negative as EHPS is bled further during driving.
2.
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Remove the screw cap from the filler neck on the reservoir.
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4.
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Bleed the power steering unit
Start the engine 3x and switch off again after approx. 5 seconds.
Hold a short pause before each start.
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5.
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Bleed the hydraulic system.
Start the engine.
Turn the steering wheel 5x from end position to end position.
Switch off the engine.
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