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 |
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: Schematic Diagrams
Schematic diagram
Terminal Function
NO.Function1-2C-CAN Low3C-CAN High4GND5IGN_16-7L-CAN Low8L-CAN High
...
Hyundai Elantra AD (2016-2020) Service Manual: Rear Coil Spring Components and Components Location
Components
1. Spring upper pad2. Coil spring3. Spring upper pad
...
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