NANO

BRAKE SYSTEM 515 BRAKES TROUBLE SHOOTING OF VACUUM BOOSTER ASSEMBLY BASIC TEST IF THE BOOSTER IS NOT OPERATING Disconnect the vacuum hose from the NRV. Then with ENGINE RUNNING, check vacuum supply with a vacuum gauge. There should be at least 300 - 350 mm of Hg* vacuum for Petrol vehicle. When adequate vacuum supply is obtained, repeat basic test. If, VACUUM SUPPLY IS BELOW 300 mm of Hg for petrol vehicle, replace or repair vacuum hose and vacuum source. * At Sea Level If, VACUUM SUPPLY IS ABOVE 350 mm of Hg for petrol vehicle, replace or repair vacuum hose and vacuum source. OFF the engine, press brake pedal several times to remove vacuum from Booster Assembly. After this the pedal application will feel hard to press. Press the brake pedal and hold with light pressure of @ 10kgs. Start the Engine If the booster is functioning satisfactory, the pedal will fall slightly and then hold. Here less pressure will be needed to hold the pedal dawn.