Kia Optima Hybrid: Brake System / 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 |
| 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 | |||
| 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) |
| 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 | |
| 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 brake fluid can causecorrosion and decrease ...
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 air in the ...
Other information:
Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Fender Repair procedures
Replacement • Be careful not to damage the fender and body. • When removing the clips, use a clip remover. 1. Remove the front bumper. (Refer to the BD group - "Front Bumper") 2. Loosen the mud guard mounting screws. 3. After loosening the mounting screws and clips, then remove the ...
Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: CVVT & Camshaft Description and Operation
Description Continuous Variable Valve Timing (CVVT) system advances or retards the valve timing of the intake and exhaust valve in accordance with the ECM control signal which is calculated by the engine speed and load. By controlling CVVT, the valve over-lap or under-lap occurs, which makes better fuel ...