SAFARI

47 BRAKES CHECK LIST FOR ENSURING SATISFACTORY FUNCTIONING OF VACUUM BOOSTER Engine Off : Depress and release brake pedal several times to remove vacuum from the system. Depress pedal and hold with light pressure (7-12 kg) and start engine. If Vacuum Booster is operative, pedal will fall slightly and then hold. Less pressure will be needed to hold pedal down, than with the engine in 'off'' condition. If Vacuum Booster is not operative disconnect the vacuum hose from the Vacuum Booster non- return valve. Then with engine running, check the vacuum supply with a vacuum gauge. There should be atleast 20” of vacuum. If Vacuum Booster is operative, do the vacuum leak test as given. If vacuum supply is below 20" replace or repair the vacuum hose and vacuum fittings. If the vacuum supply is 20" or more the Vacuum Booster is defective and should be replaced with new Vacuum Booster Assy. With new hose fitting repeat the basic test.