VELOSTER(FS) >2013 > G 1.6 T-GDI > Brake System > General Information>Specifications  
Specifications
Item
Specification
Master cylinder 
Type
Tandem
Cylinder I.D.
22.22 mm (0.875 in)
Piston stroke
45 ± 1 mm (1.77 ± 0.039 in)
Fluid level switch
Provided
Brake booster 
Type
Single
Boosting ratio
8 : 1
Front Disc brake
Type
Ventilated disc
Disc O.D.
Ø 280 mm (11.02 in)
Disc thickness
23 mm (0.91 in)
Caliper piston
Single
Cylinder I.D.
Ø 57.2mm (2.25 in)
Rear Disc brake
Type
Solid disc
Disc O.D.
262 mm (10.31 in)
Disc thickness
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

O.D.: Outer Diameter
I.D: Inner Diameter
Specification (ESC)
Part
Item
Standard value
Remark
HECU
System
4 Channel 4 Sensor (Solenoid)
Total control
Type
Motor, valve relay integrated type
(ABS, EBD, TCS, ESC)
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 ~ 2,500 Hz
 
Tone wheel
Front : 46 teeth, Rear : 47 teeth
 
Air gap
0.4 ~ 1.5 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/s²
 

Service Standard
Items
Standard value
Brake pedal height
191.61 mm (7.54 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
1.8 ~ 4.2 mm (0.07 ~ 0.17 in)
Front brake disc thickness
23 mm (0.91 in)
Front brake disc pad thickness
10.5 mm (0.41 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
Master cylinder to brake booster
9.8 ~ 15.7
1.0 ~ 1.6
7.2 ~ 11.6
Brake booster mounting nuts
18.6 ~ 23.5
1.9 ~ 2.4
13.7 ~ 17.4
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
18.6 ~ 23.5
1.9 ~ 2.4
13.7 ~ 17.4
Brake pedal shaft nut
29.4 ~ 34.3
3.0 ~ 3.5
21.7 ~ 25.3
Front wheel speed sensor mounting bolt
7.8 ~ 11.8
0.8 ~ 1.2
5.7 ~ 8.7
Rear wheel speed sensor mounting bolt
6.9 ~ 10.8
0.7 ~ 1.1
5.0 ~ 8.0
HECU bracket mounting nut
16.7 ~ 25.5
1.7 ~ 2.6
12.3 ~ 18.8

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
0.8 ~ 2.0 g
Rear caliper guide rod and boot
AI-11P
0.8 ~ 2.0 g