Hyundai Sonata: Specifications - General Information - Brake SystemHyundai Sonata: Specifications

Specifications

Item
 Specification
Master cylinder
 Type
 Tandem
Cylinder I.D.
 22.22mm
Piston stroke
 45±1 mm (1.77±0.039 in)
Fluid level switch
 Provided
Brake booster
 Type
 11" Single
Boosting ratio
 9:01
Vacuum pump
 Type
 Electric vacuum pump
(Multi vane type)
Vacuum checking type
 Vacuum switch
Front disc brake
 Type
 Ventilated disc
Disc O.D.
 Ø 300 mm (11.81 in)
Disc thickness
 28 mm (1.10 in)
Caliper piston
 Single
Cylinder I.D.
 Ø 60 mm (2.36 in)
Rear disc brake
 Type
 Solid disc
Disc O.D.
 Ø  284 mm (11.18 in)
Disc thickness
 10 mm (0.39 in)
Caliper piston
 Single
Cylinder I.D.
 Ø 34 mm (1.34 in)
Parking brake
 Type
 DIH (Drum in hat)
Drum I.D.
 Ø 168 mm (6.61 in)

O.D. : Outer Diameter
I.D : Inner Diameter
Specification(ESC)
Part
 Item
 Standard value
 Remark
HECU
 System
 4 Channel 4 Sensor (Solenoid)
 Total control
(ABS, EBD, TCS, ESC)
Type
 Motor, valve relay intergrated type
Operating Voltage
 10 ~ 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 ~ 2500 Hz
 　
Tone wheel
 47 teeth
 　
Air gap
　
 Front
 0.4 ~ 1.2 mm
 　
Rear
 0.4 ~ 1.0 mm
Yaw rate& Lateral G sensor
(CAN TYPE)
 Operating Voltage
 7 ~ 18 V
 　
Current Consumption
 Max. 120 mA
 　
Yaw rate sensor measurement range
 -100 ~ +100 °/sec
 　
Lateral G sensor measurement range
 -1.8 +1.8g
 　

Service Standard
Items
 Standard value
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
 3 ~ 8 mm (0.12 ~ 0.31 in)
Front brake disc thickness
 28 mm (1.10 in)
Front brake disc pad thickness
 11 mm (0.43 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
 12.7 ~ 16.7
 1.3 ~ 1.7
 9.4 ~ 12.3
Brake booster mounting nuts
 9.8 ~ 14.7
 1.0 ~ 1.5
 7.2 ~ 10.8
Air bleeding screw
 6.9 ~ 12.7
 0.7 ~ 1.3
 5.1 ~ 9.4
Brake tube flare nuts
 13.7 ~ 16.7
 1.4 ~ 1.7
 10.1 ~ 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
 9.8 ~ 14.7
 1.0 ~ 1.5
 7.2 ~ 10.8
Brake pedal shaft nut
 24.5 ~ 34.3
 2.5 ~ 3.5
 18.1 ~ 25.3
Wheel speed sensor mounting bolt
 7.8 ~ 9.8
 0.8 ~ 1.0
 5.8 ~ 7.2
HECU bracket mounting bolt and nut
 19.6 ~ 29.4
 2.0 ~ 3.0
 14.5 ~ 21.7
Yaw rate&G sensor mounting bolts
 3.9 ~ 5.9
 0.4 ~ 0.6
 2.9 ~ 4.3

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
 1.0g ~ 1.5g, 1.2g ~ 1.7g
Rear Caliper guide rod and boot
 AI-11P
 0.8 g ~ 1.3g


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