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1.Remove contaminants or
corrosion from the brake disc surface.
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![](../../../img/35/ACX00668AH00ENG.png)
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2.Use a micrometer to
measure the brake disc thickness at minimum eight points
which are
10 mm inward from its circumference. Standard
value:
28.0 mm
<Front> 18.0 mm
<Rear>
Limit:
26.4
mm <Front> 16.4 mm
<Rear>
3.If the brake
disc thickness is worn beyond the limit value at more than
one point,
replace the brake disc and check its run-out.
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1.Remove contaminants or
corrosion from the brake disc surface.
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![](../../../img/35/ACX00668AH00ENG.png)
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2.Use a micrometer to
measure the brake disc thickness at minimum eight points
which are
10 mm inward from its circumference. Then record the
measurements. 3.If the brake disc thickness
unevenness (the difference between the maximum and minimum
values measured above) is 0.015 mm or less, it is within the
standard value.
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![](../../../img/35/AC006226AE00ENG.png)
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4.If the brake disc
thickness unevenness exceeds the standard value, grind it
according
to the procedure below while it is mounted on the
vehicle.
note |
If it is suspected that the
brake disc thickness will become less than the
limit value
after the grinding, replace the brake disc and
check its run-out.
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(1)
Check for wheel bearing looseness in the axial direction
(Refer to GROUP 26 - On-vehicle
Service, Wheel bearing axial play check
<Front> or
GROUP 27 - On-vehicle Service, Axle shaft axial play
check
<Rear>). (2)
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caution |
- Insert M12 plain washer and
then install the adapter as
shown before grinding.
Failure
to use the M12 plain washer
will cause the brake disc to
be deformed and ground
incorrectly.
- To grind the brake disc,
ensure that all the nuts
(M12 X 1.5) are tightened
evenly
and in a diagonal sequence
to the specified torque (100
N·m). Failure to use
all the nuts
(M12×1.5), excessive
or uneven tightening torque
will cause the brake disc to
deform
or judder.
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Correct the brake disc uneven thickness by grinding
it while in place on the vehicle.
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1.Check for wheel bearing
looseness in the axial direction (Refer to GROUP 26 -
On-vehicle
Service, Wheel bearing axial play check
<Front> or
GROUP 27 - On-vehicle Service, Axle shaft axial play
check
<Rear>).
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2.If the axial play is
within the limit value, secure the brake disc by tightening
the
nut (M12×1.5) evenly to the specified torque (100
N·m).If the axial play still
exceeds the limit value, replace the wheel bearing. Then
secure the brake disc by tightening
the nut (M12×1.5) evenly to the specified torque (100
N·m).
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![](../../../img/35/ACX00669AG00ENG.png)
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3.Place a dial gauge ca. 5
mm inward from the circumference of the brake disc to
measure
its run-out. Limit: 0.06 mm
<Front>, 0.06 mm
<Rear> 4.If the brake disc
run-out exceeds the limit value, rephase the brake disc to
the hub
so that the minimum brake disc run-out is obtained.
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![](../../../img/35/AC006226AE00ENG.png)
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5.
caution |
- Insert M12 plain washer and then install
the adapter as shown before grinding.
Failure
to use the M12 plain washer will cause
the brake disc to be deformed and ground
incorrectly.
- To grind the brake disc, ensure that all
the nuts (M12 X 1.5) are tightened
evenly
and in a diagonal sequence to the
specified torque (100 N·m).
Failure to use all the nuts
(M12×1.5), excessive or uneven
tightening torque will cause the brake
disc to deform
or judder.
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If the brake disc run-out exceeds the limit value
after rephasing, grind the disc while
in place on the vehicle so that the brake disc run-out is
within the limit value.
note |
If it is suspected that the
brake disc thickness will be below the limit
value, replace
the brake disc.Then rephase the brake disc so
that the minimum brake disc run-out is obtained,
or grind the disc while in place on the vehicle
so that its run-out is below the limit
value.
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