Mitsubishi Evolution X. Manual — part 821
BASIC BRAKE SYSTEM DIAGNOSIS
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BASIC BRAKE SYSTEM
35A-11
STEP 8. Adjust the brake pedal.
Refer to
.
Q: Is the brake pedal adjusted correctly?
YES : Go to Step 9.
NO : Adjust the brake pedal. Then go to Step 9.
STEP 9. Recheck symptom.
Q: Is the symptom eliminated?
YES : The procedure is complete.
NO : Start over at step 1. If a new symptom surfaces, refer
to the symptom chart.
INSPECTION PROCEDURE 8: Groaning, Clicking or Rattling Noise when Brakes are not Applied.
DIAGNOSIS
.
STEP 1. Check whether foreign material has entered the
wheel covers.
Q: Is there any foreign material?
YES : Remove it. Then go to Step 5.
NO : Go to Step 2.
STEP 2. Check for looseness of the wheel nuts.
Q: Are the wheel nuts loose?
YES : Tighten to 98
± 10 N⋅ m (73 ± 7 ft-lb). Then go to Step
5.
NO : Go to Step 3.
STEP 3. Check for looseness of the caliper installation
bolt.
Q: Is the caliper installation bolt loose?
YES : Tighten to 135
± 15 N⋅ m (100 ± 11 ft-lb) for the front
caliper. Tighten to 80
± 10 N⋅ m (59 ± 7 ft-lb) for the
rear caliper. Then go to Step 5.
NO : Go to Step 4.
STEP 4. Check the wheel bearings for end play.
Refer to GROUP 26
− On-vehicle Service, Wheel bearing end
play check
<Front> or GROUP 27
− On-vehicle Service,
Wheel bearing end play check
<Rear>.
Q: Does the measured end play exceed the limit?
YES : Replace the faulty hub assembly. Then go to Step 5.
NO : Go to Step 5.
SPECIAL TOOLS
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BASIC BRAKE SYSTEM
35A-12
STEP 5. Recheck symptom.
Q: Is the symptom eliminated?
YES : The procedure is complete.
NO : Start over at step 1. If a new symptom surfaces, refer
to the symptom chart.
SPECIAL TOOLS
M1352000601526
Tool
Number
Name
Use
MB992146
MB992146
Booster test
adapter
Inspection using a simplified tester
MB990964
A
B
MB990964
A: MB990520
Brake tool set
A: Piston expander
Disk brake piston pushing back
ON-VEHICLE SERVICE
BRAKE PEDAL CHECK AND ADJUSTMENT
M1351003500737
CAUTION
Do not apply grease or lubricant to the switch and the
switch installation section to avoid malfunction of the
switch. In addition, do not use gloves which have grease
on them.
.
BRAKE PEDAL HEIGHT CHECK
1. Turn up the floor carpet under the brake pedal.
2. Remove the stoplight switch (Refer to
AC505506AJ
B
A
Dash panel
Dash panel pad
Stoplight
switch
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.
(1) Remove the brake pedal assembly (Refer to
ON-VEHICLE SERVICE
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BASIC BRAKE SYSTEM
35A-13
(2) Check the removed brake pedal assembly for distortion,
and replace it when deformed (Refer to
).
(3) Install the brake pedal assembly (Refer to
).
AC508163AB
C
Clevis
Stud bolt
(4) 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)
(5) When the measured value is not within the standard
value (C), replace the brake booster (Refer to
AC309282 AG
0.5 to 1.5 mm
(0.02 to 0.06 in)
Pedal stopper
Pedal stopper
Stoplight switch
7. After checking the brake pedal height, install the stoplight
switch in the following procedure:
(1) 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.
(2) Check that the clearance between the stoplight switch
and the pedal stopper is as shown in the figure.
(3) 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
GROUP 22C
− On-vehicle Service, Shift Lock Mechanism
9. Recover the floor carpet under the brake pedal.
.
ON-VEHICLE SERVICE
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BASIC BRAKE SYSTEM
35A-14
BRAKE PEDAL PLAY CHECK AND ADJUSTMENT
AC505506AF
D
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.
.
BRAKE PEDAL-TO-FLOOR PANEL CLEARANCE
CHECK AND ADJUSTMENT
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).
AC706067AB
E
E + F
F
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.
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