Impreza 2.5 RS Sedan AWD F4-2.5L SOHC (2002)
Brake Bleeding: Service and Repair
PROCEDURE
CAUTION:
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The FMVSS No. 116, fresh DOT3 or 4 brake fluid must be used.
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Cover the bleeder with waste cloth when loosening it to prevent brake fluid from being splashed over surrounding parts.
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Avoid mixing different brands of brake fluid to prevent degrading the quality of the fluid.
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Be careful not to allow dirt or dust to get into the reservoir tank.
NOTE:
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Start with the brakes (wheels) connected to the secondary chamber of the master cylinder.
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The time interval between two brake pedal operations (from the time when the pedal is released to the time when it is depressed another time) shall
be approximately 3 seconds.
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The air bleeder on each brake shall be released for 1 to 2 seconds.
1. MASTER CYLINDER
NOTE:
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If the master cylinder is disassembled or reservoir tank is empty, bleed the master cylinder.
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During the bleeding operation, keep the brake reservoir tank filled with brake fluid to eliminate entry of air.
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Brake pedal operating must be very slow.
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For convenience and safety, two people should do the work.
1) Disconnect the brake line at primary and secondary sides.
2) Cover the master cylinder with vinyl bag.
3) Carefully depress and hold the brake pedal.
4) Close the outlet plug with your finger, and release the brake pedal.
5) Repeat the above step 3) and 4) until brake fluid is completely bled from outlet plug.
6) Remove the vinyl bag, then connect the brake pipe to master cylinder.
Tightening torque: 8 Nm (0.8 kgf-m, 5.8 ft. lbs.)
7) Using water, wash off the spilt brake fluid at the master cylinder surrounding, then wipe up the water.
8) Bleed air from the brake line.
2. BRAKE LINE
NOTE:
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During the bleeding operation, keep the brake reservoir tank filled with brake fluid to eliminate entry of air.
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Brake pedal operating must be very slow.
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For convenience and safety, two people should do the work.
1) Make sure that there is no leak from joints and connections of the brake system.
