Kia Optima: Specifications - Brake SystemKia Optima: Specifications

Specifications
Item
Specification
Front disc brake
Type
Ventilated disc
Disc O.D.
O 300 mm (11.81 in)
Disc thickness
28 mm (1.10 in)
Caliper piston
Single
Cylinder I.D.
O 60 mm (2.36 in)
Rear disc brake
Type
Solid disc
Disc O.D.
O  284 mm (11.18 in)
Disc thickness
10 mm (0.39 in)
Caliper piston
Single
Cylinder I.D.
O 34 mm (1.34 in)
Parking brake
Type
DIH (Drum in hat)
Drum I.D.
O 168 mm (6.61 in)

   
   
O.D. : Outer Diameter
I.D : Inner Diameter
Specification (ESC)
Part
Item
Standard value
Remark
Integrated
Brake
Actuation
Unit(IBAU)
System
4 Channel 4 Sensor (Solenoid)
Total control
(ABS, EBD, TCS, ESC)
Type
Motor, valve relay integrated type
Operating Voltage
10 ~ 16 V
Operating Temperature
-40 ~ 120 °C (-40 ~ 248°F)
Motor power
270 W
Active Wheel speed sensor
Supply voltage
DC 4.5 ~ 20 V
?
Output current low
5.9 ~ 8.4 mA
?
Output current high
11.8~ 16.8 mA
?
Output range
1 ~ 2500 Hz
?
Tone wheel
Front: 48 teeth, Rear: 47 teeth
?
Air gap
?
Front
0.4 ~ 1.5 mm
?
Rear
0.4 ~ 1.0 mm
Yaw rate& Lateral G sensor
(CAN TYPE)
Operating Voltage
10 ~ 16 V
?
Current Consumption
Max. 140 mA
?
Yaw rate sensor measurement range
-75 ~ +75 °/sec
?
Lateral G sensor measurement range
-14.715 ~ 14.715 m/s?
?
Pressure
Source
Unit
(PSU)
System
4 Channel 4 Sensor (Solenoid)

Operating Voltage
10 ~ 16 V

Operating Temperature
-40 ~ 125 °C (-40 ~ 248°F)

Motor Power
170 W


Service Standard
Items
Standard value
Brake pedal Full stroke
130 mm
Stop lamp switch clearance
1.0 ~ 2.0 mm (0.04 ~ 0.08 in)
Brake pedal free play
3 ~ 8 mm (0.12 ~ 0.31 in)
Front brake disc thickness
28 mm (1.10 in)
Front brake disc pad thickness
11 mm (0.43 in)
Rear brake disc thickness
10 mm (0.39 in)
Rear brake disc pad thickness
10 mm (0.39 in)

Tightening Torques
Items
N.m
kgf.m
lb-ft
Hub nut
88.3 ~ 107.9
9.0 ~ 11.0
65.1 ~ 79.6
Air bleeding screw
6.9 ~ 12.7
0.7 ~ 1.3
5.1 ~ 9.4
Brake tube flare nuts
12.7 ~ 16.7
1.3 ~ 1.7
9.4 ~ 12.3
Front caliper guide rod bolts
21.6 ~ 31.4
2.2 ~ 3.2
15.9 ~ 23.1
Rear caliper guide rod bolts
21.6 ~ 31.4
2.2 ~ 3.2
15.9 ~ 23.1
Front caliper assembly to knuckle
78.5 ~ 98.1
8.0 ~ 10.0
57.9 ~ 72.3
Rear caliper assembly to knuckle
63.7 ~ 73.5
6.5 ~ 7.5
47.0 ~ 54.2
Brake hose to caliper
24.5 ~ 29.4
2.5 ~ 3.0
18.1 ~ 21.7
Brake pedal member bracket bolts
9.8 ~ 14.7
1.0 ~ 1.5
7.2 ~ 10.8
Brake pedal shaft nut
29.4 ~ 34.3
3.0 ~ 3.5
21.7 ~ 25.3
Wheel speed sensor mounting bolt
6.9 ~ 10.8
0.7 ~ 1.1
5.1 ~ 8.0
IBAU bracket mounting bolts
10.8 ~ 12.7
1.1 ~ 1.3
8.0 ~ 9.4
Yaw rate&G sensor mounting nuts
6.9 ~ 10.8
0.7 ~ 1.1
5.1 ~ 8.0
IBAU Brake Tube Flare nuts
13.7 ~ 16.7
1.4 ~ 1.7
10.1 ~ 12.3
PSU Bracket mounting bolts 
19.6 ~ 29.4
2.0 ~ 3.0
14.5 ~ 21.7

Lubricants
Items
Recommended
Quantity
Brake fluid
DOT 3 or DOT 4
As required
Brake pedal bushing and bolt
Chassis grease
As required
Parking brake shoe and backing plate contacting surface
Heat resistance grease
As required
Front Caliper guide rod and boot
AI-11P
1.2g ~ 1.7g (Trailing)
1.0g ~ 1.5g (Leading)
Rear Caliper guide rod and boot
AI-11P
0.8 g ~ 1.3g

Brake Bleeding Procedure
AHB Brake System Bleeding procedure     • Do not reuse the drained fluid. • Always use genuine DOT3/DOT4 brake Fluid. Usinga non-genuine DOT3/DOT4 b ...

Special Service Tools
Special Service Tools Tool Name / NumberIllustrationDescription09581-11000Piston expanderUsed when spreading the front and rear brake piston.09580-3D100Air bleeding toolUsed when bleeding the ai ...

See also:

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