Hyundai Elantra: Specifications - General Information - Brake System - Hyundai Elantra HD 20062010 Service ManualHyundai Elantra: Specifications


Specifications

Item
Specification
Master cylinder
Type
I.D.
Piston stroke
Fluid level warning sensor

Tandem type
20.64 mm (0.813 in)
45 mm (1.77 in)
Provided
Proportioning valve(CBS)
Cut-in pressure(Split point)
Decompression ratio

26 kg/cm² (2.55 MPa, 369.8 psi)
0.27 : 1
Brake booster
Type
Boosting ratio

Vacuum
9 : 1 (CBS), 7.5 : 1 (ABS, ESC)
Front brake(Disc)
Type
Disc O.D.
Disc I.D.
Disc thickness
Pad thickness
Cylinder type
Cylinder I.D.

Floating type with ventilated disc
275 mm(10.83 in)
172 mm(6.77 in)
26 mm(1.02 in)
11 mm(0.43 in)
Single piston
Ø57.2 mm(2.25 in)
Rear brake(Disc)
Type
Disc O.D.
Disc I.D.
Disc thickness
Pad thickness
Cylinder type
Cylinder I.D.

Floating type with solid disc
262 mm (10.31 in)
185 mm (7.28 in)
10 mm (0.39 in)
10 mm (0.39 in)
Single piston
Ø30.0 mm (1.18 in)
Rear brake (Drum)
Type
Drum I.D.
Brake lining thickness
Clearance adjustment

Leading trailing
203.2 mm (8.00 in)
4.3 mm (0.17 in)
Automatic
Parking brake
Actuation
Type
Drum I.D.

DIH (Drum in hat)
Lever
168 mm(6.61 in)

ABS : Anti-lock Brake System
CBS : Conventional Brake System
ESC : Electronic Stability Control system
Specification (ABS)
Part
Item
Standard value
Remark
HECU(Hydraulic and Electronic Control
Unit)
System
4 channel 4 sensor
(Solenoid)
ABS system:ABS & EBD control
Type
Motor, valve relay intergrated type
Operating voltage
8 V ~ 16 V(DC)
Operating temperature
-40 ~ 120 C
(-40 ~ 248 F)
Warning lamp
Operating voltage
12 V
ABS W/L:ABS failure
Brake W/L:Parking, brake oil, EBD failure
Current consumption
80 mA

Acitve wheel speed
sensor
Supply voltage
DC 4.5 ~ 20 V

Operating temperature
-40 ~ 150 C
(-40 ~ 302 F)

Output current low
5.9 ~ 8.4 mA
Typ.7 mA
Output current High
11.8 ~ 16.8 mA
Typ.14 mA
Frequency range
1 ~ 2500 HZ

Air gap
Front
0.4 ~ 1.0 mm
(0.02 ~ 0.04 in)
Typ.0.7 mm(0.03 in)
Rear
0.4 ~ 1.0 mm
(0.02 ~ 0.04 in)
Typ.0.7 mm(0.03 in)
Tone wheel
48 teeth

Output duty
30~70 %


Specification(ESC)
Part
Item
Standard Value
Remark
HECU(Hydraulic and Electronic Control
Unit)
System
4 channel 4 sensor(Solenoid)
Total control( ABS, EBD, TCS, ESC)
Type
Motor, valve relay intergrated type
Operating voltage
8 V ~ 16 V(DC)
Operating temperature
-40 ~ 120 C
(-40 ~ 248 F)
Warning lamp
Operating voltage
12 V
ESC Operating Lamp
ESC Warning Lamp
Current consumption
80 mA
Active wheel speed
sensor
Supply voltage
DC 4.5 ~ 20V

Operating temperature
-40 ~ 150 C
(-40 ~ 302 F)

Output current low
5.9 ~ 8.4 mA

Output current high
11.8 ~ 16.8 mA

Tone wheel
48 teeth

Frequency range
1 ~ 2500 HZ

Airgap
Front
0.4 ~ 1.0 mm
(0.02 ~ 0.04 in)
Typ.0.7 mm(0.03 in)
Rear
0.4 ~ 1.0 mm
(0.02 ~ 0.04 in)
Typ.0.7 mm(0.03 in)
Steering Wheel Angle Sensor
Operating Voltage
8V ~ 16 V

Current Consumption
Max 150 mA

Operating Angular velocity
Max 780 /sec

Yaw-rate & Lateral G sensor
Operating Voltage
8 V ~ 16 V

Current Consumption
Max. 120 mA

Yaw Sensor Operating Range
100 /s

G Sensor Operating Range
1.8 G


Service Standard
Item
Standard value
Standard value
Brake pedal height
Brake pedal stroke
Stop lamp switch outer case to pedal stopper clearance
Brake pedal free play
Booster push rod to master cylinder piston clearance
Parking brake lever stroke when lever assembly is pulled with 196N (20Kg, 44lb force)
Front disc brake pad thickness
Front disc thickness
Rear disc brake pad thickness
Rear disc brake disc thickness
Rear parking brake lining thickness

174.3 mm (6.86 in) [LHD]
135 mm (5.31 in)
1.0 ~ 2.0 mm (0.04 ~ 0.08 in)
3 ~ 8 mm (0.11 ~ 0.31 in)
0 (at 500 mmHg vacuum)
7 clicks

11 mm (0.43 in.)
26 mm (1.02 in)
10 mm (0.4 in)
10 mm (0.4 in)
3.3 mm (0.13 in)

Tightening Torques
Item
N.m
kgf.m
lb-ft
Proportioning valve to master cylinder
34.3 ~ 53.9
3.5 ~ 5.5
25.3 ~ 39.8
Master cylinder to booster mounting nut
7.9 ~ 11.8
0.8 ~ 1.2
5.8 ~ 8.7
Brake booster mounting nut
12.7 ~ 15.7
1.3 ~ 1.6
9.4 ~ 11.6
Bleeder screw
6.9 ~ 12.7
0.7 ~ 1.3
5.1 ~ 9.4
Brake tube to HECU (M10 nut)-ABS
12.7 ~ 16.7
1.3 ~ 1.7
9.4 ~ 12.3
Brake tube to HECU (M12 nut)-ECS
18.6 ~ 22.6
1.9 ~ 2.3
13.7 ~ 16.6
Caliper guide rod bolt
21.6 ~ 31.4
2.2 ~ 3.2
15.9 ~ 23.1
Caliper mounting bolt (Front)
78.5 ~ 98.1
8.0 ~ 10.0
57.9 ~ 72.3
Caliper mounting bolt (Rear)
49.0 ~ 58.8
5.0 ~ 6.0
36.2 ~ 43.4
Brake hose to front caliper
24.5 ~ 29.4
2.5 ~ 3.0
18.1 ~ 21.7
Brake pedal member assembly bracket mounting nut (cowl side upper mounting)
16.7 ~ 25.5
1.7 ~ 2.6
12.3 ~ 18.8
Brake pedal mounting nut
12.7 ~ 15.7
1.3 ~ 1.6
9.4 ~ 11.6
Stop lamp switch mounting nut
7.9 ~ 9.8
0.8 ~ 1.0
5.8 ~ 7.2
Wheel speed sensor mounting bolt
6.9 ~ 10.8
0.7 ~ 1.1
5.1 ~ 8.0
HECU mounting bracket bolt
16.7 ~ 25.5
1.7 ~ 2.6
12.3 ~ 18.8
HECU bracket mounting nut
5.9 ~ 9.8
0.6 ~ 1.0
4.3 ~ 7.2
Yaw rate & Lateral G sensor mounting bolt
4.9 ~ 7.8
0.5 ~ 0.8
3.6 ~ 5.8


Lubricant

Item
Recommended lubricant
Quantity
Brake fluid
DOT 3
As required
Brake pedal bushing and brake pedal bolt
Chassis grease
As required
Parking brake shoe and backing plate contact surfaces
Bearing grease
As required
Caliper guide rod bolt and boot
RX-2 grease
1.2 ~ 1.7 g (Leading)
1.0 ~ 1.5 g (Trailing)
Rear caliper guide rod and boot
Rubber grease
0.8 ~ 1.3 g


    Special Service Tools
    Special Service Tools Tool (Number and Name) Illustration Use 09581 - 11000 Piston expander Pushing back of the fro ...