Brake booster – Subaru 2011 Impreza WRX User Manual

Page 381

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Black plate (387,1)

北米Model "A1110BE-C" EDITED: 2010/ 12/ 17

advisable.

CAUTION

. Clutch fluid absorbs moisture

from the air. Any absorbed moist-
ure can cause improper clutch
operation.

. If the vehicle requires frequent

refilling, there may be a leak. If
you suspect a problem, have the
vehicle checked at your SUBARU
dealer.

. When clutch fluid is added, be

careful not to allow any dirt into
the tank.

. Never splash the clutch fluid over

painted surfaces or rubber parts.
Alcohol contained in the clutch
fluid may damage them.

. Be careful not to spill clutch fluid

when adding it. If clutch fluid
touches the exhaust pipe, it may
cause a bad smell, smoke, and/or
a fire. If clutch fluid gets on the
exhaust pipe, be sure to wipe it
off.

& Recommended clutch fluid

Refer to

“Fluids” F12-9.

CAUTION

Never use different brands of clutch
fluid together. Also, avoid mixing
DOT 3 and DOT 4 brake fluids even if
they are the same brand.

Brake booster

If the brake booster does not operate as
described in the following, have it checked
by your SUBARU dealer.
1. With the engine off, depress the brake
pedal several times, applying the same
pedal force each time. The distance the
pedal travels should not vary.
2. With the brake pedal depressed, start
the engine. The pedal should move
slightly down to the floor.
3. With the brake pedal depressed, stop
the engine and keep the pedal depressed
for 30 seconds. The pedal height should
not change.
4. Start the engine again and run for
approximately one minute then turn it off.
Depress the brake pedal several times to
check the brake booster. The brake
booster operates properly if the pedal
stroke decreases with each depression.

NOTE

For vehicles equipped with the brake
assist system, when you depress the
brake pedal strongly or suddenly, the
following phenomena occur. However,
even though these occur, they do not
indicate any malfunctions, and the
brake assist system is operating prop-

Maintenance and service

11-27

– CONTINUED –

11

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