Discharge the vacuum in the brake
servo, with the engine off, by operating the brake pedal vigorously and
repeatedly.With the brake pedal pressed, start the engine without accelerating.Check that after a few seconds, the brake pedal advances in accordance
with the increase in pressure brought about by the operation of
the servo unit.Release the brake pedal and, without further action, turn off
the engine.After about 10 minutes operate the brake pedal, and check that
when it is pressed for the first time, it lowers with assistance
from the servo unit, and that subsequently it gradually becomes
harder.