Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 568
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ON-VEHICLE SERVICE
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BASIC BRAKE SYSTEM
35A-21
CHECK VALVE OPERATION CHECK
M1351009000075
CAUTION
The check valve should not be removed from the vacuum
hose.
1. Remove the vacuum hose. (Refer to
CAUTION
If the check valve is defective, replace it as an assembly
unit together with the vacuum hose.
2. Check the operation of the check valve by using a vacuum
pump.
PROPORTIONING VALVE FUNCTION TEST
M1351001100078
1. Connect two pressure gauges, one each to the input side
and output side of the proportioning valve, as shown.
2. Air bleed the brake line and the pressure gauge.
3. While gradually depressing the brake pedal, make the
following measurements and check to be sure that the
measured values are within the allowable range.
(1) Output fluid pressure begins to drop relative to input fluid
pressure (split point).
Standard value: 2.7
−
3.2 MPa (391
−
462 psi)
(2) Check that the output fluid pressure is at standard value
when the input fluid pressure indicates 9.8 MPa (1,422
psi).
Standard value: 4.3
−
5.1 MPa (619
−
732 psi)
(3) Output fluid pressure difference between left and right
brake lines.
Limit: 0.4 MPa (57 psi)
4. If the measured fluid pressures are not within allowable
ranges, replace the proportioning valve.
VACUUM PUMP
CONNECTION
CRITERIA
Connection at the brake
booster side (A)
A negative pressure
(vacuum) is created and
held.
Connection at the intake
manifold side (B)
A negative pressure
(vacuum) is not created.
AC000873 AB
A
B
VALVE
SPRING
INTAKE
MANIFOLD
SIDE
(DOES NOT
HOLD)
BOOST-
ER SIDE
(HOLDS)
AC000874
PRESSURE GAUGE
PROPORTIONING VALVE
AB
AC000875AB
INPUT FLUID PRESSURE
OUTPUT
FLUID
PRESSURE
SPLIT POINT
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ON-VEHICLE SERVICE
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BASIC BRAKE SYSTEM
35A-22
BLEEDING
M1351001400109
CAUTION
Use only brake fluid DOT 3 or DOT 4. Never mix the
specified brake fluid with other fluid as it will influence the
braking performance significantly.
MASTER CYLINDER BLEEDING
The master cylinder used has no check valve, so if bleeding is
carried out by the following procedure, bleeding of air from the
brake pipeline will become easier. (When brake fluid is not
contained in the master cylinder.)
1. Fill the reserve tank with brake fluid.
2. Keep the brake pedal depressed.
3. Have another person cover the master cylinder outlet with a
finger.
4. With the outlet still closed, release the brake pedal.
5. Repeat steps 2
−
4 three or four times to fill the inside of the
master cylinder with brake fluid.
BRAKE LINE BLEEDING
CAUTION
For vehicles equipped with ABS, be sure to filter/strain the
brake fluid being added to the master cylinder reservoir
tank. Debris may damage the hydraulic unit.
Start the engine and bleed the air in the sequence shown in the
figure.
BRAKE FLUID LEVEL SENSOR CHECK
M1351009100083
The brake fluid level sensor is in good condition if there is no
continuity when the float surface is above "A" and if there is
continuity when the float surface is below "A."
AC000876
AC000877
4
1
2
3
AB
AC000878 AB
A
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ON-VEHICLE SERVICE
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BASIC BRAKE SYSTEM
35A-23
DISC BRAKE PAD CHECK AND REPLACEMENT
M1351002300075
NOTE: The brake pads have indicators that contact the brake
disc when the brake pad thickness becomes 2 mm (0.08 inch),
and emit a squealing sound to warn the driver.
CAUTION
•
Whenever a pad must be replaced, replace both LH and
RH wheel pads as a set to prevent the vehicle from
pulling to one side when braking.
•
If there is a significant difference in the thicknesses of
the pads on the left and right sides, check the sliding
condition of the piston, lock pin, and guide pin.
1. Check the brake pad thickness through the caliper body
check port.
Standard value: 10.0 mm (0.39 inch)
Minimum limit: 2.0 mm (0.08 inch)
CAUTION
Do not wipe the special grease from the guide pin. Do not
contaminate the guide pin.
2. Remove the guide pin. Lift the caliper assembly and secure
it with a wire.
3. Remove the following parts from caliper support. <FRONT
(2.4L ENGINE)>
(1) Pad and wear indicator assembly
(2) Inner shim B
(3) Inner shim A
(4) Pad assembly
(5) Outer shim B
(6) Outer shim A
(7) Clip
AC000879
WHEN NEW
WHEN WORN
AB
PAD
WEAR INDICATOR
BRAKE
DISC
AC001589
AC000881
AC000882 AC
7
4
6
5
7
2
3
1
<FRONT (2.4L ENGINE)>
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ON-VEHICLE SERVICE
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BASIC BRAKE SYSTEM
35A-24
4. Remove the following parts from caliper support. <FRONT
(3.0L ENGINE)>
(1) Pad and wear indicator assembly
(2) Pad assembly
(3) Inner shim
(4) Outer shim
(5) Pad clip
5. Remove the following parts from caliper support. <REAR
(3.0L ENGINE)>
(1) Pad and wear indicator assembly
(2) Inner shim B
(3) Inner shim A
(4) Pad assembly
(5) Outer shim
(6) Clip
6. Measure the hub torque before and after pad installation.
Follow the procedure:
Front: Refer to
Rear: Refer to
CAUTION
Do not apply excessive grease. Excessive grease may
cause brake performance to become poor.
7. For front disc brake <2.4L ENGINE> and rear disc bake
<3.0L ENGINE>, apply brake grease SAE J310, NLGI
number 1 to the following positions before installing the pad.
<FRONT (2.4L ENGINE)>
•
Pad and wear indicator assembly and inner shim A contact
surface
•
Inner shim A and inner shim B contact surface
•
Pad assembly and outer shim A contact surface
•
Outer shim A and inner shim B contact surface
<REAR (3.0L ENGINE)>
•
Pad and wear indicator assembly and inner shim A contact
surface
•
Inner shim A and inner shim B contact surface
AC003738 AB
4
5
5
2
3
1
<FRONT (3.0L ENGINE)>
AC000884AC
<REAR (3.0L ENGINE)>
6
4
5
2
3
1
6
AC000885
<FRONT (2.4L ENGINE)>
AC
PAD AND WEAR INDICATOR ASSEMBLY
INNER
SHIM A
INNER
SHIM B
OUTER
SHIM A
OUTER
SHIM B
PAD ASSEMBLY
AC000886
INNER SHIM A
INNER SHIM B
PAD AND WEAR
INDICATOR
ASSEMBLY
<REAR (3.0L ENGINE)>
AC
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