Basic Brake System - Lancer Evolution: Adjustments Mitsubishi Lancer X

BRAKE PEDAL CHECK AND ADJUSTMENT

Scheme 1

Scheme 2

Scheme 3

1. Turn up the floor carpet under the brake pedal.
2. Remove the stoplight switch (Refer to «REMOVAL AND INSTALLATION»(ref-289400-S09488504792008063000000) ).
3. Use a needle or similar tool to measure the dimension A in the figure (distance from the dash panel pad surface to the dash panel).
4. Measure the dimension B in the figure (distance from the pedal pad surface to the dash panel pad surface).
5. Make sure that the total of the dimensions A and B measured in Steps 2 and 3 (brake pedal height) is within the standard value. Standard value (A+B): 219.8 - 227.8 mm (8.7 - 9.0 inch)
6. When the brake pedal height is not within the standard value, inspect the brake pedal in the following procedure. Remove the brake pedal assembly (Refer to «REMOVAL AND INSTALLATION»(ref-289400-S09488504792008063000000) ). Check the removed brake pedal assembly for distortion, and replace it when deformed (Refer to «INSPECTION»(ref-289400-S03667111662008063000000) ). Install the brake pedal assembly (Refer to «REMOVAL AND INSTALLATION»(ref-289400-S09488504792008063000000) ). Measure the brake pedal height again, and make sure that it is within the standard value (A+B). When the measured value is not within the standard value, measure the dimension C in the figure (distance from the stud bolt end to the clevis hole center), and make sure it is within the standard value (C). Standard value (C): 74 mm (2.91 inch) When the measured value is not within the standard value (C), replace the brake booster (Refer to «MASTER CYLINDER ASSEMBLY AND BRAKE BOOSTER ASSEMBLY»(ref-289400-S18093428502008063000000) ).
7. After checking the brake pedal height, install the stoplight switch in the following procedure: Screw in the stoplight switch until its thread contacts the pedal stopper, then turn the switch approximately one eighth of a clockwise turn to fix it. While doing this, pull and hold the brake pedal by hand. Check that the clearance between the stoplight switch and the pedal stopper is as shown in the figure. Connect the stoplight switch connector. NOTE: Make sure that the stoplight is not illuminated when the brake pedal is not depressed.
8. Check the shift lock mechanism < TC-SST > (Refer to «SHIFT LOCK MECHANISM CHECK»(ref-289384-S37418562962008063000000) ).
9. Recover the floor carpet under the brake pedal.

Scheme 4

1. With the engine stopped, depress the brake pedal 2 or 3 times to release the vacuum in the brake booster. Then, press the brake pedal with your finger and check if the pedal stroke until the pedal becomes heavy (play) is within the standard value. Standard value (B): 3 - 8 mm (0.12 - 0.31 inch)
2. When the brake pedal play is not within the standard value, check the brake pedal-to-clevis pin looseness, clevis pin-to-booster operating rod looseness, brake pedal height, and stoplight switch position, and adjust or replace as necessary.

Scheme 5

1. Turn up the floor carpet or other similar material under the brake pedal.
2. Using a needle or similar tools, measure the dimension E shown in the figure (from the dash panel pad surface to the dash panel).
3. Start the engine, and depress the brake pedal with approximately 500 N. Then, measure the dimension F shown in the figure (from the center of pedal pad surface to the dash panel pad surface).
4. Check that the sum of the dimensions E and F measured in Steps 2 and 3 (clearance between the brake pedal and the floor panel) is within the standard value. Standard value (E+F): 85 mm (3.35 inch)
5. If the clearance between the brake pedal and the floor panel is not within the standard value, check for the air intrusion in brake line and the thickness of disk brake pad. Make corrections or replace components as necessary.
6. Recover the floor carpet or other similar material under the brake pedal.

Scheme 6

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Scheme 8

1. Carry out the simplified brake booster operation check in the following procedure: Run the engine for 1 to 2 minutes, and then stop. Depress the brake pedal with normal depression force. The result is judged as "Good" when the pedal stroke is great at the first depression, and becomes smaller as you repeat depressing the pedal. If the pedal stroke does not change, the result is judged as "No Good". With the engine stopped, depress the brake pedal several times. Keep the brake pedal depressed and start the engine. At this time, when the pedal moves down slightly, the result is judged as "Good." The result is judged as "No Good" if the pedal does not move down. With the engine running, depress the brake pedal. Stop the engine in this condition. The result is judged as "Good" when the pedal height does not change for approximately 30 seconds. The result is judged as "No Good" if the pedal moves up.
2. The brake booster is judged as normal when the results of all the above checks are "Good". When one or more of the above check results are "No Good," then the check valve, vacuum hose, or brake booster is suspected faulty.

Scheme 9

1. Remove the check valve (Refer to «REMOVAL AND INSTALLATION»(ref-289400-S30038351792008063000000) ). CAUTION: Replace the check valve when it is faulty.
2. Using a vacuum pump, check operation of the check valve. VACUUM PUMP CONNECTION Vacuum pump connection Normal condition When connected to the booster side (1) Vacuum is generated and maintained. When connected to the engine side (2) No vacuum is generated.