Basic Brake System - Lancer Evolution: Other Mitsubishi Lancer X

IMPROVED BRAKING PERFORMANCE

1. In addition to the 10-inch through bolt type single brake booster, the small and long stroke-type master cylinder is adopted to provide rigidity, to reduce weight, and to secure the assist force.
2. Brembo™ 18-inch 4-pot front ventilated disk brakes and Brembo™ 17-inch 2-pot rear ventilated disk brakes are adopted to provide stable braking force and improved braking feel.
3. To the front, two-piece structure brake disk is installed. < GSR: Option, MR: Standard >

IMPROVED STABILITY

1. Front- and rear-wheel X-type brake line layout is used.
2. The brake pedal retreat suppression mechanism that suppresses the retraction of brake pedal surface upon a frontal collision is adopted.
3. To the front brake and rear brake, the brake pads with audible wear indicator are adopted which warn the driver of the wear limit.

Scheme 34

LUBRICANTS

LUBRICANTS SPECIFICATIONS

BLEEDING

Brake fluid: DOT3 or DOT4

BLEEDING OF BRAKE PIPELINE

Perform the bleeding in the order shown in the figure.

Scheme 35

DISK BRAKE BLEEDING

Connect a vinyl tube to the outer end of the air bleeder screws to bleed the circuit of air. Then, connect the vinyl tube to the inner end and bleed the circuit of air. Except for these, the conventional procedures shall be followed. After the circuit has been bled of air, tighten both air bleeder screws securely.

Scheme 36

BRAKE PAD CHECK

Scheme 37

Scheme 38

1. Visually check the thickness of brake pad from the inspection hole of the caliper body. Standard value: 9.85 mm (0.39 inch) < Front > 9.0 mm (0.35 inch) < Rear > Limit: 2.0 mm (0.08 inch) < Front > 2.0 mm (0.08 inch) < Rear >
2. When the thickness is lower than the limit value, replace both brake pads (right and left) as a set (Refer to «BRAKE PAD REPLACEMENT»(ref-289400-S37795878612008063000000) ).

DISK BRAKE ROTOR CHECK

Before turning the brake disk, the following conditions should be checked.

INSPECTION CHART

Scheme 39

Scheme 40

1. Using a micrometer, measure disk thickness at eight positions, approximately 45 degrees apart and 10 mm (0.4 inch) in from the outer edge of the disk. Standard value: 32.0 mm (1.26 inch) < Front > 22.0 mm (0.87 inch) < Rear > Limit: 30.0 mm (1.18 inch) < Front > 20.0 mm (0.79 inch) < Rear > NOTE: Thickness variation (at least 8 positions) should not be more than 0.015 mm (0.0006 inch). CAUTION: After a new brake disk is installed, always grind the brake disk with on-the-car type brake lathe. If this step is not carried out, the brake disk run-out exceeds the specified value, resulting in judder. When the on-the-car type lathe is used, first install M12 flat washer on the stud bolt in the brake disk side according to the figure, and then install the adapter. If the adapter is installed with M12 flat washer not seated, the brake disk rotor may be deformed, resulting in inaccurate grinding. Grind the brake disk with all wheel nuts diagonally and equally tightened to the specified torque 100 N.m (74 ft-lb). When all numbers of wheel nuts are not used, or the tightening torque is excessive or not equal, the brake disk rotor or drum may be deformed, resulting in judder.
2. If the disk thickness is less than the limits, replace it with a new one. If thickness variation exceeds the specification, turn rotor with an on-the-car type brake lathe ("MAD, DL-8700PF" or equivalent). If the calculated final thickness after turning the rotor is less than the standard value, replace the disk.

Scheme 41

Scheme 42

1. Remove the brake assembly, and then hold it with wire.
2. Temporarily install the disk with the hub nut.
3. Place a dial gauge approximately 5 mm (0.2 inch) from the outer circumference of the brake disk, and measure the run-out of the disk. Limit: 0.06 mm (0.0024 inch) < Front > 0.08 mm (0.0032 inch) < Rear >
4. When the brake disk runout exceeds the limit value, correct the brake disk runout according to the following procedure. Before removing the brake disk, make marks using a chalk to the stud bolt on the side with the greater runout and to both sides of the stud bolt. Check the wheel bearing axial looseness. (Refer to «WHEEL BEARING END PLAY CHECK»(ref-289401-S19854450872008063000000) < Front > or «WHEEL BEARING END PLAY CHECK»(ref-289399-S02395837622008063000000) < Rear >.) When the looseness is within the limit value, install the brake disk after changing the phase between the hub and the brake disk, then check the runout of the brake disk again. CAUTION: After a new brake disk is installed, always grind the brake disk with on-the-car type brake lathe. If this step is not carried out, the brake disk run-out exceeds the specified value, resulting in judder. When the on-the-car type lathe is used, first install M12 flat washer on the stud bolt in the brake disk side according to the figure, and then install the adapter. If the adapter is installed with M12 flat washer not seated, the brake disk rotor may be deformed, resulting in inaccurate grinding. Grind the brake disk with all wheel nuts diagonally and equally tightened to the specified torque 100 N.m (74 ft-lb). When all numbers of wheel nuts are not used, or the tightening torque is excessive or not equal, the brake disk rotor or drum may be deformed, resulting in judder.
5. If the run-out cannot be corrected by changing the phase of the brake disk, replace the brake disk or grind it with the on-the-car type brake lathe ("MAD, DL-8700PF" or equivalent).

Scheme 43

1. Remove the brake pad, shim, and clip. (Refer to «BRAKE PAD REPLACEMENT»(ref-289400-S37795878612008063000000) .)
2. Using a spring scale, and with the brake pad, shim, and clip removed, measure the hub sliding torque in the forward direction.
3. Install the brake pad, shim, and clip. (Refer to «BRAKE PAD REPLACEMENT»(ref-289400-S37795878612008063000000) .)
4. Start the engine, and depress the brake pedal forcibly two or three times. Then, stop the engine.
5. Rotate the brake disk 10 times in the forward direction.
6. Using a spring scale, and with the brake pad, shim, and clip installed, measure the hub sliding torque in the forward direction.
7. Obtain the disk brake drag force (difference between measured values of Step 2 and Step 6 ). Standard value: 68 N (15.3 pounds) or less < Front > 68 N (15.3 pounds) or less < Rear >
8. If the brake drag force exceeds the standard value, disassemble the brake caliper assembly, and check the fouling/rust on the piston sliding section, piston seal deterioration, and the sliding status of guide pin and lock pin. (Refer to «DISASSEMBLY AND ASSEMBLY»(ref-289400-S05547252242008063000000) < Front > or «DISASSEMBLY AND ASSEMBLY»(ref-289400-S35584206642008063000000) < Rear >.)

STOPLIGHT SWITCH CHECK

Scheme 44

1. Connect a circuit tester (ohmsrange) to the stoplight switch connector.
2. When no continuity is detected with the plunger pressed from the edge of the outer case by the dimension shown in the figure and when continuity is detected with the plunger released, the stoplight switch is in good condition.

Scheme 45

1. Place the brake pedal assembly on a level surface as shown in the figure, and set the distance from the center of the pin assembly mounting hole to the level surface to 97 mm (3.82 inch). Make sure that the dimension A in the figure (distance from the pedal pad center part to the level surface) is within the standard value. Standard value (A): 240 - 246 mm (9.4 - 9.7) < M/T > 242 - 248 mm (9.5 - 9.8) < TC-SST >
2. When dimension A is not within the standard value, replace the brake pedal assembly.

Scheme 46

Scheme 47

BRAKE DISC CHECK

1. Disc wear (Refer to «DISK BRAKE ROTOR CHECK»(ref-289400-S19879477602008063000000) ).
2. Disc run-out (Refer to «DISK BRAKE ROTOR CHECK»(ref-289400-S19879477602008063000000) ).

BRAKE PAD WEAR CHECK

Measure thickness at the thinnest, most worn area of the pad.

Replace the pad assembly if pad thickness is less than the limit value.

Standard value: 9.85 mm (0.39 inch)

Limit: 2.0 mm (0.08 inch)

Scheme 48

1. Disc wear (Refer to «DISK BRAKE ROTOR CHECK»(ref-289400-S19879477602008063000000) ).
2. Disc run-out (Refer to «DISK BRAKE ROTOR CHECK»(ref-289400-S19879477602008063000000) ).

PAD WEAR CHECK

Measure thickness at the thinnest, most worn area of the pad.

Replace the pad assembly if pad thickness is less than the limit value.

Standard value: 9.0 mm (0.35 inch)

Limit: 2.0 mm (0.08 inch)

Scheme 49