Kia 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 ...
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