Hyundai i-30: Brake System / Specifications

Hyundai i30 (PD) 2018-2025 Service Manual / Brake System / Specifications

Specifications
Item
Specification
Master cylinder
 Type
 Tandem
Cylinder I.D.
 22.22 mm
Piston stroke
 45 ± 1 mm (1.77 ± 0.039 in)
Fluid level switch
 Provided
Brake booster
 Type
 10"/11" Single
Boosting ratio
 8.0 : 1
Front disc brake
 Type
 Ventilated disc
Disc O.D.
 Ø 280 mm (11.02 in)
Ø 288 mm (11.34 in)
Ø 305 mm (12.00 in)
Disc thickness
 23 mm (0.90 in)
25 mm (0.98 in)
Caliper piston
 Single
Cylinder I.D.
 Ø 57.15 mm (2.25 in)
Rear disc brake
 Type
 Solid disc
Disc O.D.
 Ø  262 mm (10.31in)
Disc thickness
 10 mm (0.39 in)
Caliper piston
 Single
Cylinder I.D.
 Ø 38.15 mm (1.50 in)
Parking brake
 Type
 BIR (Ball-in-Ramp)
Actuation
 Lever
EPB

Specification (ESP)
Part
Item
Standard value
Remark
HECU
 System
 4 Channel 4 Sensor (Solenoid)
Total control
(ABS, EBD, TCS, ESP)
Type
 Motor, valve relay intergrated type

Operating Voltage
 8 - 16V

Operating Temperature
 -40 - 120°C (-40 - 248°F)

Motor power
 310 W / 370 W
Active Wheel speed sensor
 Supply voltage
 DC 4.5 - 20V

Output current low
 5.9 - 8.4 mA

Output current high
 11.8- 16.8 mA

Output range
 1 - 2,500 Hz

Tone wheel
 Front : 46 teeth, Rear : 46 teeth

Air gap
 0.4 - 1.0 mm


Service Standard
Items
Standard value
Brake pedal height
 176 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
 23 mm (0.90 in)
25 mm (0.98 in)
Front brake disc service limit (23 mm)
 21 mm (0.82 in)
21.4 mm (0.84 in)
Front brake disc service limit (25 mm)
 22.6 mm (0.88 in)
23 mm (0.90 in)
Front brake disc pad thickness
 10.5 mm (0.41 in)
13 mm (0.51 in)
Front brake disc pad service limit
 2.0 mm (0.78 in)
Rear brake disc thickness
 10 mm (0.39 in)
Rear brake disc service limit
 8.4 mm (0.33 in)
Rear brake disc pad thickness
 10 mm (0.39 in)
Rear brake disc pad service limit
 2.0 mm (0.78 in)

Tightening Torques
Items
N.m
kgf.m
lb-ft
Master cylinder to brake booster
9.8 - 17.7
 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
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
78.5 - 98.1
 8.0 - 10.0
 57.9 - 72.3
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
Wheel speed sensor mounting bolt
8.8 - 13.7
 0.9 - 1.4
 6.5 - 10.1
HECU bracket mounting and nut
10.8 - 13.7
 1.1 - 1.4
 8.0 - 10.1

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

    ..

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