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What Causes the Brakes to Harden When the Air Conditioning is Turned On in an Emgrand?

1 Answers

AugustDella

07/29/25 10:48pm

When the brakes harden with the air conditioning on in an Emgrand, it indicates an issue with the brake vacuum system. Brake Wear: Severe wear of the brake pads causes the expansion shaft to reach its maximum limit, jamming and failing to reset. This is common in older vehicles with prolonged use. Replace the brake pads. High Brake Line Resistance: Excessive resistance in the brake line is often due to internal rusting from water ingress, freezing, oil contamination, or dust accumulation causing stickiness. It is recommended to replace the brake line. Rear Brake Expansion Shaft Wear: Severe wear of the rear brake expansion shaft is common in older vehicles that have had brake pads replaced, where the working surface of the expansion shaft is heavily worn and jammed. Transmission Mechanism Wear: Issues such as improper brake line routing, aging or deformation of the line sheath, etc. Specific analysis is required for different models. If unable to resolve the issue independently, it is advisable to consult a professional mechanic.

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