Hyundai Kona: Brake System / Specifications

Hyundai Kona (OS) 2018-2024 Service Manual / Brake System / Specifications

Specifications
Item
Specification
Master cylinder
 Type
 Single
Cylinder I.D.
 22.22 mm
Piston stroke
 45 ± 1 mm (1.77 ± 0.039 in)
Fluid level switch
 Provided
Brake booster
 Type
 Single
Boosting ratio
 10.0 : 1
Front disc brake
 Type
 Ventilated disc
Disc O.D.
 15"
Ø 280 mm (11.02 in)
 16"
Ø 305 mm (12.01 in)
 17"
Ø 320 mm (12.60 in)
Disc thickness
 23 mm (0.90 in)
 25 mm (0.98 in)
 28 mm (1.10 in)
Caliper piston
 Single
Cylinder I.D.
 Ø 57.15 mm (2.25 in)
Rear disc brake
 Type
 Solid disc
Disc O.D.
 14"
Ø  262 mm (10.31in)
 15"
Ø 284 mm (11.18in)
Disc thickness
 10 mm (0.39 in)
 10 mm (0.39 in)
Caliper piston
 Single
Cylinder I.D.
 Ø 34 mm (1.34 in)
Parking brake
 Type
 BIR (Ball-in-Ramp)
Actuation
 Lever

Specification (VDC)
Part
Item
Standard value
Remark
HECU
 System
 4 Channel 4 Sensor (Solenoid)
 Total control(ABS, TCS, EBD)
Type
 Motor, valve relay intergrated type
 ECU, TCU and CAN
Operating Voltage
 8V - 16V
Operating Temperature
 -40 ~ 110°C (-40 ~ 230°C)
Motor power
 290 W
Active Wheel speed sensor (ABS)
 Supply voltage
 DC 4.5 - 20V
Output current low
 5.9 - 8.4 mA
 Typ. 7 mA
Output current high
 11.8 - 16.8 mA
 Typ. 14mA
Output range
 1 - 2600 Hz
Tone wheel
 Front : 46 teeth, Rear : 47 teeth
Air gap
 0.4 - 1.0 mm
Steering Wheel Angle Sensor
 Operating Voltage
8 - 16V

Current Consumption
Max. 150 mA

Output measurement range
-780 to +779.9 °

Operating Angular velocity
0 - 1016 °/sec


Service Standard
Items
Standard value
Brake pedal height
 182 mm (6.93 in)
Brake pedal Full stroke
 135 mm (5.31 in)
Stop lamp switch clearance
 1.0 - 2.0 mm (0.04 - 0.08 in)
Brake pedal free play
 2 - 4 mm (0.08 in - 0.16 in)
Front brake disc thickness
 15"
23 mm (0.90 in)
 16"
25 mm (0.98 in)
 17"
28 mm (1.10 in)
Front brake disc service limit
 21.4 mm(0.84 in)
 23.0 mm(0.90 in)
 26.4 mm(1.04 in)
Front brake disc pad thickness
 11 mm (0.43 in) or 11.5mm (0.45 in)
Front brake disc pad service limit
 2.0 mm (0.08 in)
Rear brake disc thickness
 10 mm (0.39 in)
Rear brake disc service limit
 2WD (14"/15")
 4WD (15")
8.4 mm (0.33 in)
8.0 mm (0.31 in)
Rear brake disc pad thickness
 9 mm (0.35 in)
Rear brake disc pad service limit
 2.0 mm (0.08 in)

Tightening Torques
Items
N.m
kgf.m
lb-ft
Master cylinder to brake booster
 9.8 - 15.6
 1.0 - 1.6
 7.2 - 11.6
Brake booster mounting nuts
 16.7 - 25.5
 1.7 - 2.6
 12.3 - 18.8
Air bleeding screw
 6.9 - 12.7
 0.7 - 1.3
 5.1 - 9.4
Master cylinder tube flare nut
 18.6 - 22.5
1.9 - 2.3
13.7 - 16.6
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
 16.7 - 25.5
 1.7 - 2.6
 12.3 - 18.8
Vacuum pump mounting bolt
 19.6 - 29.4
 2.0 - 3.0
14.5 - 21.7
Wheel speed sensor mounting bolt
 7.84 - 11.7
 0.8 - 1.2
 5.78 - 8.67
HECU bracket mounting and nut
 16.6 - 25.4
 1.7 - 2.6
 12.2 - 18.8
Front wheel speed sensor mounting bolt
7.84 - 11.7
0.8 - 1.2
5.78 - 8.67
Rear wheel speed sensor mounting bolt (Multi link)
6.86 - 10.7
0.7 - 1.1
5.06 - 7.95
HECU brake tube flare nut (Brake hose)
16.6 - 25.4
1.7 - 2.6
12.2 - 18.8
HECU brake tube flare nut (Master cylinder)
18.6 - 22.5
1.9 - 2.3
13.7 - 16.6
Parking brake lever assembly mounting bolt
19.6 - 29.4
2.0 - 3.0
14.4 - 21.6
Parking brake switch mounting screw
1.96 - 2.94
0.2 - 0.3
1.44 - 2.16

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

Brake System
...

Special service tools
Special Service Tools Tool (Number and Name) Illustration Use 09581-2T100 Piston expander Sprea ...

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