Subaru 2009 IMPREZA Service Manual page 2605

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7) Repeat the steps from 2) to 6) above to bleed air

from each wheel.

Perform air bleed starting in the order from the far-

thest wheel cylinder from the master cylinder.

8) Securely tighten the air bleeder screws.

Tightening torque:

8 N·m (0.8 kgf-m, 5.9 ft-lb)

9) Check that there are no brake fluid leaks in the

entire system.

10) Check the pedal stroke.

Run the engine at idle after warming up the engine,

and depress the brake pedal with a force of 500 N

(51 kgf, 112 lbf). Measure the distance between the

brake pedal and steering wheel. Release the pedal,

and measure the distance between pedal and

steering wheel again.

(1) Steering wheel

(2) Toe board

Specification of pedal stroke:

When depressing the pedal with a force of

500 N (51 kgf, 112 lbf).

95 mm (3.74 in) or less

11) If the distance is more than specification, there

is a possibility of air being caught in the brake line.

Bleed the brake line of all air until the pedal stroke

meets the specification.

12) Operate the hydraulic control unit in the se-

quence control mode. <Ref. to ABS-10, ABS Se-

quence Control.>

13) Check the pedal stroke again.

14) If the distance is more than specification, there

is a possibility of air being caught in the hydraulic

unit. Repeat above steps 2) to 9) until the pedal

stroke meets the specification.

15) Fill the reservoir tank with brake fluid up to the

"MAX" level.

16) Test run the vehicle and ensure that the brakes

operate normally.

Air Bleeding