Workshop Manuals Factory service & repair Subaru
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Subaru Impreza F4-2.5L (2008)03 · Maintenance
03 · Maintenance

Brake Bleeding: Service and Repair

Make
Subaru
Model
Impreza F4-
Engine
2.5L
Year
2008
Section
Brake Bleeding › Service and Repair
MaintenanceService and Repair · page 1 of 2
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Brake Bleeding: Service and Repair

Air Bleeding 

PROCEDURE 

CAUTION:
^

Do not let brake fluid come into contact with the painted surface of the vehicle body. Wash away with water immediately and wipe off if
it is spilled by accident.

^

Avoid mixing brake fluid of different brands to prevent fluid performance from degrading.

^

Be careful not to allow dirt or dust to enter the reservoir tank. 

MASTER CYLINDER 

NOTE:
^

When the master cylinder is disassembled or the reservoir tank is empty, bleed the master cylinder.

^

If bleeding of the master cylinder is not necessary, omit the following procedures, and perform bleeding of the brake line.

1) Fill the reservoir tank of the master cylinder with brake fluid.

NOTE:
While bleeding air, keep the reservoir tank filled with brake fluid to prevent entry of air.

2) Disconnect the brake line at primary and secondary sides.
3) Wrap the master cylinder with a plastic bag.
4) Depress the brake pedal slowly and hold it.

NOTE:
If the vehicle is equipped with a brake assist mechanism, the following may result when the brake pedal is depressed. They are normal conditions that
occur when the mechanism is performing properly.
^

Brake feel is soft when brake pedal is depressed hard or quicker than usual.

^

A light crack is heard when brake pedal is depressed hard or quicker than usual.

5) Plug the outlet plug with your finger, and then release the brake pedal.

6) Repeat the step 4) and 5) several times.
7) Remove the plastic bag.
8) Install the brake pipe to the master cylinder.
Tightening torque:

Model with ABS 15 N-m (1.5 kgf-m, 10.8 ft-lb)
Model with VDC 19 N-m (1.9 kgf-m, 14.0 ft-lb)

9) Bleed air from the brake line.

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Parts & tools for this job For 2008 Subaru Impreza 2.5L

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