Hyundai Tucson LM Quiz
Brake System

Specifications

In this manual: Brake System
General Information — 1Engine Mechanical System — 44Engine Electrical System — 45Emission Control System — 24Engine Control System/Fuel System — 93Clutch System — 13Manual Transmission — 18Automatic Transmission — 87Four-Wheel Drive (4WD) System — 26Drive Shaft and Axle — 29Suspension System — 35Steering — 20Restraints — 47Brake System — 36Body (Interior and Exterior) — 53Body Electrical System — 202Heating, Ventilation, and Air Conditioning — 58
~5min read

Specifications

Item Specification
Master Cylinder X Left-Hand Drive Right-Hand Drive
Type Tandem Type Tandem Type
Cylinder Inner Diameter Cbs: O 20.64 O 25.4 mm
ABS/ESP: O 22.22 mm
Piston Stroke 45 mm (1.77 in) / 30 mm (1.18 in)
Fluid Level Sensor Provided Provided
Brake booster X Left-Hand Drive Right-Hand Drive
Type 11-inch single 8+9" Tandem
Booster Ratio 9,0 : 1 9,0 : 1
Front Disc Brake Type Ventilated Disc
Rear Disc 2WD, 4WD: O 300 mm (11.81 in)
Disc Thickness 28 mm (1.10 in.)
Disc Service Limit 26.4 mm (1.04 in.)
Caliper Piston Single
Cylinder Inner Diameter O 186 mm (7.32 in)
Rear Disc Brake X 2WD 4WD
Type Solid Disc Solid Disc
Rear Disc 262 mm (10.31 in.) 284 mm (11.18 in)
Disc Thickness 10 mm (0.39 in.) 10 mm (0.39 in.)
Disc Service Limit 8.4 mm (0.33 in.) 8.4 mm (0.33 in.)
Caliper Piston Single Single
Cylinder Inner Diameter O 34 mm (1.34 in) O 34 mm (1.34 in)
Parking Brake X 2WD 4WD
Type DIH (Drum-in-Hat) DIH (Drum-in-Hat)
Drum I.D. O 168 mm (6.61 in) O 190 mm (7.48 in)

O.D.: Outer Diameter, I.D.: Inner Diameter
Specifications (ABS)
Part Item Standard Value NOTE
HECU System 4-Channel 4-Sensor (Solenoid) X
Type Motor, Integrated Valve Relay Type X
Operating Voltage 10 ~ 16 V X
Operating Temperature -40 ~ 120 °C
(-40 ~ 248 °F)		 X
Engine Power 210 W X
Active wheel speed sensor Supply Voltage 4.5 ~ 16 V DC X
Low Output Current 5.9 ~ 8.4 mA X
High Output Current 11.8 ~ 16.8 mA X
Output range 1 ~ 2500 Hz X
Tone wheel Front 48 teeth X
Rear 2WD:
47 teeth,
4WD:
48 teeth		 X
Air gap Front 0.4 ~ 1.5 mm X
Rear 2WD:
0.4 ~ 1.0 mm
4WD:
0.4 ~ 1.5 mm		 X
Longitudinal Sensor (4WD only) Operating Voltage 4.75 - 5.25 V X
Operating Temperature -40 ~ 125 °C X
Output Voltage 0.5 V ~ 4.5 V X
Operating Range ±14.7 m/sec² X

Specifications (ESP)
Part Item Standard Value NOTE
HECU System 4-Channel 4-Sensor (Solenoid) Full Control
Type Motor, Integrated Valve Relay Type (ABS, EBD, TCS, ESP)
Operating Voltage 10 ~ 16 V X
Operating Temperature -40 ~ 120 °C X
Engine Power 270 W X
Active wheel speed sensor Supply Voltage 4.5 ~ 16 V DC X
Low Output Current 5.9 ~ 8.4 mA X
High Output Current 11.8 ~ 16.8 mA X
Output range 1 ~ 2500 Hz X
Tone wheel Front 48 teeth X
Rear 2WD: 47 teeth
4WD: 48 teeth		 X
Air gap Front 0.4 ~ 1.5 mm X
Rear 2WD: 0.4 ~ 1.0 mm,
4WD: 0.4 ~ 1.5 mm		 X
Steering Wheel Angle Sensor Operating Voltage 8 ~ 16 V X
Current Consumption Max. 150 mA X
Output Measurement Range -780 ~ +779,9° X
Operating Angular Rate 0 ~ 1016 °/sec X
Yaw Rate and Lateral/Longitudinal G-Sensor Operating Voltage 10 V ~ 16 V X
Current Consumption Max. 140 mA X
Yaw Rate Sensor Measuring Range -75 ~ +75 °/sec X
Lateral and Longitudinal G-Sensor Measuring Range -1.5 ~ +1.5 G X

Service Standard
Items Standard Shaft
Brake pedal height 165 mm (6.50 in)
Brake pedal full travel 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 pad thickness 11 mm (0.43 in.)
Rear brake disc thickness 10 mm (0.39 in.)
Rear brake pad thickness 10 mm (0.39 in.)

Tightening Torque
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 7,9 ~ 11,8 1,0 ~ 1,6 5,8 ~ 8,7
Brake booster mounting nuts 16,7 ~ 25,5 1,7 ~ 2,6 12,3 ~ 18,8
Bleeder 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 steering knuckle 78,5 ~ 98,1 8,0 ~ 10,0 57,9 ~ 72,3
Rear caliper assembly to steering knuckle 49,0 ~ 58,8 5,0 ~ 6,0 36,2 ~ 43,4
Brake hose to caliper 24,5 ~ 29,4 2,5 ~ 3,0 18,1 ~ 21,7
Brake pedal bracket bolts 16,7 ~ 25,5 1,7 ~ 2,6 12,3 ~ 18,8
Brake Pedal Shaft Nut 24,5 ~ 34,3 2,5 ~ 3,5 18,1 ~ 25,3
Front Wheel Speed Sensor Mounting Bolt 6,9 ~ 10,8 0,7 ~ 1,1 5,0 ~ 8,0
HECU Bracket Mounting Bolt and Nut 16,7 ~ 25,5 1,7 ~ 2,6 12,3 ~ 18,8
Yaw Rate and Acceleration Sensor Mounting Bolts 7,9 ~ 10,8 0,8 ~ 1,1 5,8 ~ 8,0

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 contact surface Heat-resistant grease As required
Caliper Guide Pin and Dust Boot AI-11P 0.8 ~ 2.0 g

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A quick Hyundai Tucson LM quiz: every answer comes with an explanation and a link to the manual page.