Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 565
BASIC BRAKE SYSTEM DIAGNOSIS
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BASIC BRAKE SYSTEM
35A-9
STEP 7. Check for oil, water, etc., on the pad or lining
contact surfaces of all brakes.
Q: Is oil, water, etc., on the pad or lining contact surface?
YES : Replace the part and determine and repair source/
cause of foreign material. Recheck symptom. Then
go to Step 9.
NO : Diagnosis is complete. If condition persists, go to Step
STEP 8. Check the proportioning valve operation.
Refer to
.
Q: Is there fault?
YES : Replace the part. Then go to Step 9.
NO : Go to Step 9.
STEP 9. Recheck symptom.
Q: Is the symptom eliminated?
YES : Diagnosis is complete.
NO : Start over at step 1. If a new symptom surfaces, refer
to the symptom chart.
INSPECTION PROCEDURE 3: Increased Pedal Stroke (Reduced Pedal-to-Floor Board Clearance)
DIAGNOSIS
STEP 1. Check for spongy (not firm brakes).
(1) With engine not running, depress the brake pedal
rapidly several times to deplete booster vacuum
reserve.
(2) With the brake pedal fully released, depress the
brake pedal slowly until it stops.
(3) With a measuring stick (ruler, etc.) next to the
brake pedal, depress the pedal firmly and
measure the distance the pedal traveled.
Q: Is the distance greater than 20 mm (0.8 inch)?
YES :
Bleed the brakes to remove air in the fluid
(Refer to
NO :
Go to Step 2.
STEP 2. Check the pad or lining for wear.
Refer to
Q: Is the pad or lining thickness outside of
specifications?
YES :
Replace the part. Then go to Step 8.
NO :
Go to Step 3.
STEP 3. Check the vacuum hose and check valve
for damage.
Refer to
Q: Is there damage?
YES :
Replace the part. Then go to Step 8.
NO :
Go to Step 4.
STEP 4. Check the master cylinder function.
Refer to
Q: Is there fault?
YES :
Repair it. Then go to Step 8.
NO :
Go to Step 5.
STEP 5. Check for brake fluid leaks.
Q: Is there leaks?
YES :
Check the connection for looseness,
corrosion, etc. Clean and repair as
necessary. If leaking in any tube or hose
section, replace the complete tube or hose.
Then go to Step 8.
NO <Vehicles with rear disc brake> :
Go to Step 7.
NO <Vehicles with rear drum brake> :
Go to Step
BASIC BRAKE SYSTEM DIAGNOSIS
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BASIC BRAKE SYSTEM
35A-10
STEP 6. Check the auto adjuster function.
<Vehicles with rear drum brake>
Refer to
.
Q: Is there fault?
YES :
Repair the part. Then go to Step 8.
NO :
Go to Step 7.
STEP 7. Check the clearance (too much) between
the push rod and primary piston.
Refer to
Q: Is the clearance outside of specifications?
YES :
Adjust the clearance. Then go to Step 8.
NO :
Go to Step 8.
STEP 8. Recheck symptom.
Q: Is the symptom eliminated?
YES :
Diagnosis is complete.
NO :
Start over at step 1. If a new symptom
surfaces, refer to the symptom chart.
INSPECTION PROCEDURE 4: Brake Drag
DIAGNOSIS
STEP 1. Check the parking brake lever return.
Q: Is there fault?
YES : Repair it. Then go to Step 10.
NO : Go to Step 2.
STEP 2. Check the parking brake pull amount.
Refer to GROUP 36, On-vehicle Service
−
Parking Brake Lever
Stroke Check and Adjustment
.
Q: Is there fault?
YES : Adjust it. Then go to Step 10.
NO : Go to Step 3.
AC000857AB
<REAR DRUM BRAKE>
<REAR DISC BRAKE>
PARKING
BRAKE
LEVER
PARKING
BRAKE
LEVER
BASIC BRAKE SYSTEM DIAGNOSIS
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BASIC BRAKE SYSTEM
35A-11
STEP 3. Check the brake pedal return spring for
deterioration.
Q: Is there deterioration?
YES : Replace the spring. Then go to Step 10.
NO : Go to Step 4.
STEP 4. Check the brake shoe springs for breakage.
Q: Are the brake shoe springs broken?
YES : Replace the spring. Then go to Step 10.
NO : Go to Step 5.
STEP 5. Check the amount of grease at each sliding
section.
Refer to
or refer to GROUP 36, Parking Brake Drum
Q: Is the grease amount low?
YES : Apply grease. Then go to Step 10.
NO : Go to Step 6.
STEP 6. Check the clearance (too low) between the push
rod and primary piston.
Refer to
.
Q: Is there fault?
YES : Adjust the clearance. Then go to Step 10.
NO : Go to Step 7.
AC000858
RETURN SPRING
PEDAL SUPPORT
MEMBER
AB
AC000859 AB
<REAR DRUM BRAKE>
<REAR DISC BRAKE>
SHOE
SPRING
SHOE
SPRING
BASIC BRAKE SYSTEM DIAGNOSIS
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BASIC BRAKE SYSTEM
35A-12
STEP 7. Check the master cylinder piston return spring for
damage and return port for clogging.
Refer to
.
Q: Is there damage?
YES : Replace the part. Then go to Step 10.
NO : Go to Step 8.
STEP 8. Check port for clogging.
Q: Is the port clogged?
YES : Repair it. Then go to Step 10.
NO : Go to Step 9.
STEP 9. Check disc brake pistons for sticking.
Depress the brake pedal, then release. Confirm each wheel
spins freely.
Q: Are all wheels stuck?
YES : Inspect that brake assembly. Then go to Step 10.
NO : Go to Step 10.
STEP 10. Recheck symptom.
Q: Is the symptom eliminated?
YES : Diagnosis is complete.
NO : Start over at step 1. If a new symptom surfaces, refer
to the symptom chart.
INSPECTION PROCEDURE 5: Scraping or Grinding Noise when Brakes are Applied
DIAGNOSIS
STEP 1. Check the front brakes, then rear brakes, for
metal-to-metal condition.
Q: Is the metal-to-metal contact evident?
YES : Repair or replace components. Then go to Step 6.
NO : Go to Step 2.
STEP 2. Check for interference between the caliper and
wheel.
Q: Is there interference?
YES : Repair or replace the part. Then go to Step 6.
NO : Go to Step 3.
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