Reasons for the Failure to Increase the Pressure of the Faurecia Brake Self Valve

1、 Why can't the self valve pressure increase?

When the Faveille brake self valve is in the operating position, the pressure in the train pipe does not rise, just like the water pipe does not release water, which makes people anxious. There are three common reasons:

Air blockage: foreign objects or ice blockage in the brake pipe, like blood clots in blood vessels

Sealing failure: The rubber components inside the valve are aging and leaking, like a leaking bicycle tire

Operation problem: The handle is not fully reset or has insufficient dwell time, like a faucet that is not tightened

2、 Three step rapid diagnosis method

When encountering abnormal stress, a systematic examination can be conducted like a doctor's consultation:

Listen to the sound: There will be a noticeable hissing sound when there is a leak, which is easier to detect in a quiet environment

Pressure measurement: measure the pressure values of each interface in sections and lock in abnormal sections

Check the action: Observe whether other braking components respond synchronously and determine if there is a linkage fault

3、 Practical solutions

Treat the disease according to different causes:

For air path blockage: Use dry compressed air to blow back and pay attention to protecting precision components

Seal replacement: Choose high-quality rubber parts that are resistant to oil and temperature, and apply special lubricating grease before installation

Operation specification: Ensure that the handle is fully pushed to the operating position and hold for more than 10 seconds to observe pressure changes

Daily maintenance: Clean the filter element every month and add antifreeze measures in cold regions