Hyundai Elantra: General Information / 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" Single
Boosting ratio
8.0 : 1
Front disc brake
Type
Ventilated disc
Disc O.D.
O 280 mm (11.02 in)
Disc thickness
23 mm (0.91 in)
Caliper piston
Single
Cylinder I.D.
O 57.2 mm (2.25 in)
Rear disc brake
Type
Solid disc
Disc O.D.
O  262 mm (10.31in)
Disc thickness
10 mm (0.39 in)
Caliper piston
Single
Cylinder I.D.
O 33.96 mm (1.34 in)
Rear drum brake
Type
Leading trailing
Drum I.D
O 203.2 mm (8 in)
Brake lining thickness
4.2 mm (0.17 in)
Clearance adjustment
Automatic
Parking brake
Type
BIR (Ball-in-Ramp)
Actuation
Lever

Specification (ABS)
Part
Item
Standard value
Remark
HECU
System
4 Channel 4 Sensor (Solenoid)

Type
Motor, valve relay intergrated type

Operating Voltage
8 ~ 16 V

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

Motor power
195 W

Active Wheel speed sensor (ABS)
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 ~ 2500 Hz

Tone wheel
Front : 46 teeth, Rear : 47 teeth

Air gap
0.4 ~ 1.0 mm


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 ~ 16 V

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

Motor power
290 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 ~ 1.0 mm


Service Standard
Items
Standard value
Brake pedal height
182 mm (7.17 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)
Front brake disc service limit
21.4 mm(0.84 in)
Front brake disc pad thickness
11 mm (0.43 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)
Rear drum brake lining thickness
4.2 mm (0.17 in)
Rear drum brake lining service limit
1.0 mm (0.04 in)

Tightening Torques
Items
N.m
kgf.m
lb-ft
Master cylinder to brake booster
12.7 ~ 16.7
1.3 ~ 1.7
9.4 ~ 12.3
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
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
Wheel speed sensor mounting bolt
7.8 ~ 11.8
0.8 ~ 1.2
5.8 ~ 8.7
HECU bracket mounting and 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

General Information
...

Special Service Tools
Special Service Tools Tool(Number and Name)IllustrationUse09581-2T100Piston expanderSpreading the front disc brake piston.09580-0U000Brake piston adjusterRemoval and installtion of the rear disc ...

Other information:

Hyundai Elantra AD (2016-2020) Service Manual: Rear Oil Seal Repair procedures
Removal 1. Remove the automatic transaxle. (Refer to Automatic Transaxle System - "Automatic Transaxle") 2. Remove the drive plate. (Refer to Cylinder Block – “Drive Plate”) 3. Remove the rear oil seal (A). Installation 1. Install a new rear oil seal. (1) Apply engine oil ...

Hyundai Elantra AD (2016-2020) Service Manual: Repair procedures
Inspection Check it by the procedure below to see if the function of the ECM is normal. 1. Turn the ignition key to the "ON" position. 2. Cover the forward facing sensor. 3. Head a light to the rearward looking sensor. 4. The ECM should be darkened as soon as the rearward looking se ...

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