Checking the proper functioning of the brake booster
8 - Vacuum line
070 - Connector
1. Connect the vacuum gauge (030) to the connecting connector (070) of the vacuum line (8) of the brake booster (16) and release the vacuum in the vacuum line by pressing the foot brake pedal several times.
2. Start the engine and by sharply releasing the gas pedal create the required vacuum (0.75÷0.80 bar) in the vacuum line.
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3. By pressing the brake pedal, release the vacuum to a depth of more than 0.80 bar.
4. Stop the engine - the rate of vacuum loss should not exceed 0.4 bar/min. If necessary, check the proper functioning of the vacuum booster servo drive (see Section Checking the proper functioning of the brake booster).
5. Disconnect the vacuum gauge (030).