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.