Hyundai i-30: Brake System / Specifications

Hyundai i30 (PD) 2018-2024 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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