On a properly functioning proportioning valve, if it slides to one side it will re-center itself during the brake bleeding process using simple brake pedal pressure.

Four Wheeler tech editor Verne Simons answers a reader question about brake swaps and some common problems that can result.

Air in the brake system can make your brake pedal feel spongy and vague. You should flush the fluid every two or three years, which is a relatively easy two-person project.

Installing an adjustable brake proportioning valve is more a matter of working with hydraulic brake lines than anything else. It requires patience, some planning, and a few specialized tools ...

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