Brake servo check?

[325zimmer]

Does anyone know how to go about checking that your brake servo is working as it should be? Is there anyway of checking the vacuum it?

[monkey]

you will need to pump the brake pedal a few times with the engine off to get rid of any vacuum in the the servo . now press your foot on the brake pedal and hold pressure on it as you start the car , you should feel the pedal drop a bit as the vacuum builds . if it does not you may have a vac leak or servo problem