How Do You Clean A Brake Booster Check Valve

How to Test a Restriction Booster Check Valve

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Nearly all of today's automobiles are equipped with power-assisted brakes. The power assist organisation makes use of an ingenious booster that is powered past the vacuum generated in the engine intake manifold. For prophylactic'south sake the organization must operate for at to the lowest degree one or two brake applications even if the engine stops, and a small check valve is therefore incorporated to maintain the booster vacuum under these conditions. If the booster does not seem to be performing properly information technology is wise to test the cheque valve to eliminate it every bit a possible cause of the trouble.

Step 1

Park the vehicle and open the hood. Locate the vacuum booster. This is a dome-shaped assembly that is mounted to the rear wall of the engine compartment on the driver'southward side, in-line with the brake pedal. Locate the vacuum hose that runs from the engine intake manifold to the vacuum booster.

Pace two

Trace the vacuum hose back to the engine intake manifold connection. Undo the hose clamp or clip using pliers or a screwdriver and slip the hose off the connection point.

Step three

Blow air into the hose. Apply your oral cavity if you don't mind eating a bit of engine dirt. Alternatively, slip an aspirator bulb over the hose end and clasp. In a compression, turkey basters make great aspirators. If the check valve is functioning properly it should prevent you from blowing air into the hose.

Suck air out of the hose. If the line is not blocked and the cheque valve is functioning properly you should be able to easily suck air out of the hose.

References

Things You'll Need

• Screwdrivers
• Pliers
• Aspirator bulb, or a turkey baster

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