Mitsubishi Lancer Evolution 7. Manual — part 311
BASIC BRAKE SYSTEM -
On-vehicle Service
35A-11
BRAKE FLUID LEVEL SENSOR CHECK
The brake fluid level sensor is in good condition if there is
no continuity when the float surface is above “MIN” and if
there is continuity when the float surface is below “MIN”.
DISC BRAKE PAD CHECK AND REPLACEMENT
<Except for Brembo disc brake>
NOTE
The wear indicator contacts the brake disc when the brake
pad thickness reaches approximately 2 mm and emit a
squealing sound to warn the driver.
1. Check the brake pad thickness through the caliper body
check port.
Standard value: 10.0 mm
Limit: 2.0 mm
2. When the thickness is less than the limit, always replace
the pads at an axle set.
3. Remove the pin bolt. Pivot the caliper assembly and hold
it with wires.
Caution
Do not wipe off the special grease that is on the pin
or allow it to contaminate the pin.
4. Remove the following parts from the caliper support.
1. Pad and wear indicator assembly
2. Pad assembly
3. Clip
4. Outer shim
5. In order to measure the brake drag force after pad
installation, measure the rotary-sliding resistance of the
hub with the pads removed. (Refer to P.35A-21.)
6. Install the pads and caliper assembly, and then check
the brake drag force. (Refer to P.35A-21.)
14Z0017
Front
Rear
Front
Rear
Front
Rear
1
2
3
4
3
1
2
3
4
3
BASIC BRAKE SYSTEM -
On-vehicle Service
35A-12
<Brembo disc brake>
Caution
Take care not to contact the parts or tools to the caliper
because the paint of caliper will be scratched. And if
there is brake fluid on the caliper, wipe out quickly.
NOTE
The wear indicator contacts the brake disc when the brake
pad thickness reaches approximately 2 mm and emit a
squealing sound to warn the driver.
1. Check the brake pad thickness through the caliper body
check port.
Standard value: 10.0 mm <Front>, 9.0 mm <Rear>
Limit: 2.0 mm
2. When the thickness is less than the limit, always replace
the pads at an axle set.
(1) Holding the cross spring with one hand, pull the pin
out of the caliper.
(2) Remove the pad from the caliper.
(3) To measure brake drag force after new pads have
been installed, use a spring balance to measure the
turning sliding resistance of the hub with the pads
removed. (Refer to P.35A-21.)
(4) Clean the piston and, using the special tool, push
the piston into the cylinder.
Pads
Front
Rear
Pads
MB990520
BASIC BRAKE SYSTEM -
On-vehicle Service
35A-13
(5) Apply repair kit grease to the portions of the pads
indicated on the left. At this time, make sure that
the grease will not be applied to any other surfaces.
(6) Mount the pads to the caliper so that its side with
the wear indicator is on the outside of the vehicle.
With the rear pads, ensure that the arrow on the
pad faces in the same direction as the brake disc
turns when the vehicle moves forward.
(7) Holding the cross spring with one hand, fit pins in
the caliper.
(8) Using a spring balance, measure the turning sliding
resistance of the hub in the forward direction.
(9) Find the brake disc drag force [the difference in
measurements taken in step(3) and in step(8)].
Standard value: 69 N or less
DISC BRAKE ROTOR CHECK
Caution
When servicing disc brakes, it is necessary to exercise caution to keep the disc brakes within
the allowable service values in order to maintain normal brake operation.
Before re-finishing or re-processing the brake disc surface, the following conditions should be checked.
Inspection items
Remarks
Scratches, rust, saturated lining materials
and wear
D
If the vehicle is not driven for a certain period, the sections of
the discs that are not in contact with lining will become rusty, causing
noise and shuddering.
D
If grooves resulting from excessive disc wear and scratches are
not removed prior to installing a new pad assembly, there will
momentarily be inappropriate contact between the disc and the
lining (pad).
Run-out or drift
Excessive run-out or drift of the discs will increase the pedal depression
resistance due to piston knock-back.
Change in thickness (parallelism)
If the thickness of the disc changes, this will cause pedal pulsation,
shuddering and surging.
Inset or warping (flatness)
Overheating and improper handling while servicing will cause inset or
warping.
Front
Rear
Cross
spring
Pins
BASIC BRAKE SYSTEM -
On-vehicle Service
35A-14
BRAKE DISC THICKNESS CHECK
Caution: Brembo disc brake
Take care not to contact the parts or tools to the caliper
because the paint of caliper will be scratched. And if
there is brake fluid on the caliper, wipe out quickly.
1. Using a micrometer, measure disc thickness at eight
positions, approximately 45° apart and 10 mm in from
the outer edge of the disc.
Brake disc thickness <Except for Brembo disc brake>
Standard value: 24.0 mm <Front>, 20.0 mm <Rear>
Limit: 22.4 mm <Front>, 18.4 mm <Rear>
Brake disc thickness <Brembo disc brake>
Standard value:32.0 mm <Front>, 22.0 mm <Rear>
Limit: 29.8 mm <Front>, 20.4 mm <Rear>
Thickness variation (at least 8 positions)
The difference between any thickness measurements
should not be more than 0.015 mm.
2. If the disc is beyond the limits for thickness, remove it
and install a new one. If thickness variation exceeds the
specification, replace the brake disc or grind it with
on-the-car type brake lathe (“MAD, DL-8700PF” or
equivalent).
Caution
(1) After a new brake disc is installed, always grind
the brake disc with on-the-car type brake lathe.If
this step is not carried out, the brake disc run-out
exceeds the specified value, resulting in judder.
(2) When the on-the-car type lathe is used, first install
M12 flat washer on the stud bolt in the brake disc
side according to the figure, and then install the
adapter. If the adapter is installed with M12 flat
washer not seated, the brake disc rotor may be
deformed, resulting in inaccurate grinding.
(3) Grind the brake disc with all wheel nuts diagonally
and equally tightened to the specified torque 100
N·m. When all numbers of wheel nuts are not used,
or the tightening torque is excessive or not equal,
the brake disc rotor or drum may be deformed,
resulting in judder.
BRAKE DISC RUN-OUT CHECK AND
CORRECTION
Caution: Brembo disc brake
Take care not to contact the parts or tools to the caliper
because the paint of caliper will be scratched. And if
there is brake fluid on the caliper, wipe out quickly.
1. Remove the brake assembly, and then hold it with wire.
2. Temporarily install the disc with the hub nut.
M12 flat washer
M12 flat washer
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