Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 569
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ON-VEHICLE SERVICE
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BASIC BRAKE SYSTEM
35A-25
8. Install the pad and caliper assembly, and check the brake
drag force.
Front: Refer to
Rear: Refer to
DISC BRAKE ROTOR CHECK
M1351002900077
CAUTION
Disc brakes must be kept within the allowable
service values in order to maintain normal brake
operation.
Before turning the brake disc, the following
conditions should be checked.
FRONT BRAKE DISC RUN-OUT CHECK AND
CORRECTION
M1351009400114
1. Remove the caliper support; then raise the caliper assembly
upward and secure it with a wire.
2. Inspect the disc surface for grooves, cracks and rust. Clean
the disc thoroughly and remove all rust.
INSPECTION ITEMS
REMARKS
Scratches, rust, saturated lining materials and wear
•
If the vehicle is not driven for a long period of
time, sections of the discs that are not in contact
with the pads will become rusty, causing noise
and shuddering.
•
If grooves and scratches resulting from excessive
disc wear are not removed prior to installing a
new pad assembly, there will be inadequate con-
tact between the disc and the lining (pad) until the
pads conform to the disc.
Run-out
Excessive run-out of the discs will increase the pedal
depression resistance due to piston kick-back.
Change in thickness (parallelism)
If the thickness of the disc changes, this will cause
pedal pulsation, shuddering and surging.
Warping (flatness) or distortion
Overheating and improper handling while servicing
will cause warping or distortion.
AC000887AB
CALIPER
SUPPORT
MOUNTING
BOLT
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ON-VEHICLE SERVICE
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BASIC BRAKE SYSTEM
35A-26
3. Place a dial gauge approximately 5 mm (0.2 inch) from the
outer circumference of the brake disc, and measure the run-
out of the disc.
Limit: 0.06 mm (0.002 inch)
4. If the run-out of the brake disc is limit value or more, turn
rotor with an on-car type brake lathe ("Accuturn-8750" or
equivalent). If it still exceeds the limit, inspect hub end play.
Limit: 0.05 mm (0.002 inch)
5. If the play exceeds the limit, check the hub. If the play does
not exceed the limit, replace the brake disc.
REAR BRAKE DISC RUN-OUT CHECK AND
CORRECTION
M1351009400125
1. Remove the caliper support; then raise the caliper assembly
upward and secure it with a wire.
2. Check the disc surface for grooves, cracks and rust. Clean
the disc thoroughly and remove all rust.
3. Place a dial gauge approximately 5 mm (0.2 inch) from the
outer circumference of the brake disc, and measure the run-
out of the disc.
Limit: 0.08 mm (0.003 inch)
4. If the run-out of the brake disc is the limit value or more,
change the phase of the disc and hub, and then measure
the run-out again.
(1) Before removing the brake disc, place a mating mark on
both the wheel stud and disc with chalk where the run-out
is greatest.
ACX00669AB
AC000888
CALIPER
SUPPORT
MOUNTING
BOLT
AB
AC000889
AC000890 AB
CHALK MARKS
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ON-VEHICLE SERVICE
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BASIC BRAKE SYSTEM
35A-27
(2) Place a dial gauge as shown in the illustration, and then
move the hub in the axial direction and measure the play.
Limit: 0.05 mm (0.002 inch)
(3) If the play does not exceed the limit install the brake disc
at a different phase, and then check the run-out of the
brake disc again.
5. If the run-out cannot be corrected by changing the phase of
the brake disc, replace the disc.
BRAKE DISC THICKNESS CHECK
M1351002400061
<Front>
1. Remove dirt and rust from the brake disc surface.
2. Using a micrometer, measure disc thickness at eight
positions, approximately 45 degrees apart and 10 mm (0.4
inch) in from the outer edge of the disc.
2.4L ENGINE
Standard value: 24.0 mm (0.9 inch)
Minimum limit: 22.4 mm (0.88 inch)
3.0L ENGINE
Standard value: 26.0 mm (1.02 inch)
Minimum limit: 24.4 mm (0.96 inch)
NOTE: Thickness variation (at least 8 positions) should not
be more than 0.015 mm (0.0006 inch).
3. If the disc 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 ("Accuturn-
8750" or equivalent).
If the calculated final thickness after turning the rotor is less
than the standard value, replace the disc.
AC000891
AC000889
ACX00668 AB
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ON-VEHICLE SERVICE
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BASIC BRAKE SYSTEM
35A-28
<Rear>
1. Remove dirt and rust from the brake disc surface.
2. Measure the disc thickness at four positions or more.
Standard value: 10.0 mm (0.4 inch)
Minimum limit: 8.4 mm (0.33 inch)
NOTE: Thickness variation (at least 8 positions) should not
be more than 0.015 mm (0.0006 inch).
3. If the disc is less than 8.4 mm (0.33 inch) thick, replace it
with a new one. If thickness variation exceeds the
specification, turn rotor with an on-the-car brake lathe
("Accuturn-8750" or equivalent).
If the calculated final thickness is less than the standard
value, replace the disc.
BRAKE LINING THICKNESS CHECK
M1351003000066
CAUTION
•
Whenever the shoe and lining assembly is replaced,
replace both RH and LH assemblies as a set to prevent
the car from pulling to one side when braking.
•
If there is a significant difference in the thickness of the
shoe and lining assemblies on the left and right sides,
check the sliding condition of the piston.
NOTE: For brake lining thickness for drum-in-disc brake, refer
to GROUP 36, Parking Brake Drum
−
Inspection
.
1. Remove the brake drum.
2. Measure the thickness of the brake lining at the area with
the worst wear.
Standard value: 4.9 mm (0.19 inch)
Minimum limit: 1.0 mm (0.04 inch)
3. Replace the shoe and lining assembly if the brake lining
thickness is less than the limit or if it is not worn evenly. For
installation procedures for the shoe and lining assembly,
refer to
BRAKE DRUM INSIDE DIAMETER CHECK
M1351003200101
1. Remove the brake drum.
2. Measure the inside diameter of the brake drum at two or
more locations.
Standard value: 228.6 mm (9.00 inches)
Limit: 230.6 mm (9.08 inches)
3. Replace the brake drums, shoe and lining assembly when
wear exceeds the limit value or is badly imbalanced.
AC000892
ACX00708AB
AC000893
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