Mazda 6. Manual — part 240
P–18
CONVENTIONAL BRAKE SYSTEM
Inspection and repair procedure
Lateral runout inspection
1. To secure the disc plate and the hub, tighten the hub nuts upside down or insert a washer (thickness 10 mm
{0.39 in}, inner diameter more than 12 mm {0.47 in}) between the hub bolt and the hub nut.
Note
• The component parts of the SST (49 B017 001 or 49 G019 003) can be used as a suitable washer.
2. After tightening all the hub nuts to the same torque, put the dial gauge on the friction surface of disc plate 10
mm {0.39 in} from the disc plate edge.
3. Rotate the disc plate one time and measure the runout.
Runout limit
0.05 mm {0.002 in}
A6E6912W008
CONVENTIONAL BRAKE SYSTEM
P–19
P
Thickness variation inspection
1. Clean the disc plate-to-pad friction surface using a brake cleaner.
2. Measure the points indicated in the illustration
using a caliper (micrometer).
3. Subtract the minimum value from the maximum,
and if the result is not within specification,
machine the disc plate using a lathe.
Thickness variation limit
0.015 mm {0.00059 in}
Warning
• Do not exceed minimum disc plate
thickness.
Disc Plate Thickness Inspection
Caution
• Excessive runout may result if the disc plate is removed from the vehicle then machined. Machine
the disc plate while installed on the vehicle.
1. Measure the thickness of the disc plate.
• If the thickness is not within the specification, replace the disc plate.
Minimum
L8, LF (GCC specs.):
22 mm {0.87 in}
LF (European (L.H.D. U.K.) specs.), L3:
23 mm {0.91 in}
Minimum thickness after machining using a brake lathe on-vehicle
L8, LF (GCC specs.):
22.8 mm {0.90 in}
LF (European (L.H.D. U.K.) specs.), L3:
23.8 mm {0.94 in}
Disc Pad Thickness Inspection
1. Jack up the front of the vehicle and support it with safety stands.
2. Remove the wheel and tires.
3. Verify the remaining thickness of the pads.
Minimum thickness
2.0 mm {0.079 in} min.
4. Replace the pads as a set: right and left wheels, if
either one is at or less than the minimum
thickness.
End Of Sie
X3U411WAR
X3U411WAS
P–20
CONVENTIONAL BRAKE SYSTEM
FRONT BRAKE (DISC) REMOVAL/INSTALLATION
A6E691233980W02
1. Remove in the order indicated in the table.
2. Install in the reverse order of removal.
3. After installation, depress the pedal a few times, rotate the wheel by hand, and verify that the brake does not
drag.
.
Disc Plate Removal Note
1. Mark the wheel hub bolt and disc plate before
removal for reference during installation.
Disc Plate Installation Note
1. Remove any rust or grime on the contact face of the disc plate and wheel hub.
2. Install the disc plate and align the marks made before removal.
A6E6912W301
9
8
7
5
5
4
3
1
2
6
6
SST
SST
R
RUBBER GREASE
21.6—29.4
{2.21—3.00,
16.0—21.6}
78.4—101.9
{8.00—10.3, 57.9—75.1}
GREASE
GREASE
GREASE
GREASE
GREASE
GREASE
9.8—14.7 N·m
{100—149 kgf·cm,
87—129 in·lbf}
7
N·m {kgf·m, ft·lbf}
L8, LF (GCC SPECS.):
44.1—49.0 {4.47—4.99, 32.4—36.1}
LF (EUROPEAN (L.H.D. U.K.) SPECS.), L3:
49.0—53.9 {5.00—5.49, 36.2—39.7}
L8, LF (GCC SPECS.)
LF (EUROPEAN (L.H.D. U.K.)
SPECS.), L3
1
Flexible hose
2
Cap
3
Guide pin
4
Caliper
5
M-spring
6
Disc pad
(See
P–21 Disc Pad Installation Note
)
7
Guide plate
8
Mounting support
9
Disc plate
(See
)
(See
P–20 Disc Plate Installation Note
MARK
A6E6912W037
CONVENTIONAL BRAKE SYSTEM
P–21
P
Disc Pad Installation Note
1. Push the piston fully inward using the SST.
2. Install the disc pad.
End Of Sie
DISC PAD (FRONT) REPLACEMENT
A6E691233630W01
1. Remove in the order indicated in the table.
2. Install in the reverse order of removal.
.
49 0221 600C
A6E6912W038
7
7
5
5
4
3
1
2
6
SST
6
SST
GREASE
18.5—25.5
{1.89—2.60,
13.7—18.8}
L8, LF (GCC SPECS.)
LF (EUROPEAN (L.H.D. U.K.) SPECS.), L3
L8, LF (GCC SPECS.):
44.1—49.0 {4.47—4.99, 32.4—36.1}
LF (EUROPEAN (L.H.D. U.K.) SPECS.), L3:
49.0—53.9 {5.00—5.49, 36.2—39.7}
RUBBER GREASE
18.5—25.5
{1.89—2.60,
13.7—18.8}
N·m {kgf·m, ft·lbf}
A6E6912W032
1
Bolt
2
Bolt
3
Cap
4
Guide pin
5
M-spring
6
Disc pad
(See
P–21 Disc Pad Installation Note
7
Guide plate
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