Subaru 2009 IMPREZA, Руководство по обслуживанию

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PM-34
Brake Line
PERIODIC MAINTENANCE SERVICES
3. BRAKE SERVO SYSTEM
1) With the engine off, depress the brake pedal
several times applying the same pedal force. Make
sure the travel distance should not change.
2) With the brake pedal depressed, start the en-
gine. Make sure the pedal should move slightly to-
ward the floor.
3) With the brake pedal depressed, stop the engine
and keep the pedal depressed for 30 seconds.
Make sure the pedal height should not change.
4) A check valve is built into the vacuum hose. Dis-
connect the vacuum hose to inspect function of
check valve.
Blow compressed air into vacuum hose from the
end of brake booster side. Check that the air flows
from the air hose on engine side. Next blow air into
hose from engine side: Check that the air does not
flow from the hose.
Replace the both check valve and vacuum hose if
the check valve is faulty. Engine side of vacuum
hose is indicated by marking “ENG” as shown.
5) Check the vacuum hose for cracks or other dam-
age.
NOTE:
When installing the vacuum hose on the engine
and brake booster, do not use soapy water or lubri-
cating oil on their connections.
6) Check the vacuum hose to make sure it is tightly
secured.
(A) Engine side
(B) Brake booster side
PM-00387
(A)
(B)