Last month we asked this Tech question and invited you to share your answer. We value your expertise and want to thank everyone who participated!
Question: What is the purpose of the check valve in a vacuum brake booster?
Answer: It maintains vacuum in the booster when there is none supplied. Allowing for a few assisted brake pedal applications. The brake booster is used to amplify the force applied to the brake pedal during stopping. The booster relies on atmospheric pressure on one side and vacuum on the other during braking. The vacuum is usually supplied by the engine but on some vehicles, may be provided by an electric pump. In case the engine was to stall or the vacuum pump was to fail, the check valve would hold vacuum in the booster allowing for a few assisted brake applications before the vacuum in the booster is depleted.
Congratulations to the following shop who answered this question and will be receiving a prize pack!
- Allan at Titan Automotive in Regina, SK
- Jordan at Allmac Repair LTD in Port McNeill , BC
The Tech Challenge question is published in our weekly eNewsletter with an online answer form. Fill out the form with the details of how you would perform the repair to be entered for the chance to win the prize pack. You can also submit a challenge for future Tech Challenges! A draw is conducted with all shops who answered the question correctly and one is selected as a winner for a prize pack.
Got a Tech Tip you want to share for a future Tech Challenge? >>CLICK HERE to fill out our question form.