Question

Which valve prevents front brake application before the rear brakes begin to work ?​

Answer 1

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proportioning valve

You may notice locking up in the rear wheels if the proportioning valve is failing, especially when driving on wet surfaces. Note: The proportioning valve allows the rear brakes to apply before the front brakes are applied. This prevents any nose diving.

Answer 2

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proportioning valve

You may notice locking up in the rear wheels if the proportioning valve is failing, especially when driving on wet surfaces. Note: The proportioning valve allows the rear brakes to apply before the front brakes are applied. This prevents any nose diving.