Brake system — technical data (Mitsubishi Space Star)

Brake system of cars manufactured since 1999

Master brake cylinder

• type - dual-circuit
• internal diameter, mm — 23.81

Vacuum brake booster

• type - vacuum
• effective diameter, mm — 265
• ratio - 6.5

Degree of pressure limiter decompression, mPa — 0.26

Front brakes

• type - disc, ventilated
• brake disc diameter, mm — 211.0
• brake disc thickness, mm — 24
• cylinder diameter, mm — 53.97
• brake pad thickness, mm — 10.0
• clearance adjustment - automatic

Rear drum brakes

• inner diameter of brake drum, mm — 203
• cylinder diameter, mm — 19.05
• thickness of friction linings of brake shoes, mm — 4.38
• clearance adjustment - automatic

The parking brake is mechanical and acts on the rear wheels.

Basic data for adjustment and control of cars manufactured since 1999

Brake pedal installation height, mm — 163.5-166.5

Free travel of the brake pedal, mm — 3-8

Distance between the floor and the brake pedal when pressed, mm — not less than 80

Rear brake pressure regulator

• switching point, MPa - 24.5
• liquid pressure at the outlet (inlet pressure), MPa - 4.30 + 0.4 (9.81)
• pressure difference at the regulator outlet between the left and right circuits, MPa — 0.4

Clearance between the vacuum booster rod and the piston of the main brake cylinder, mm — 0.6-0.8

Front disc brakes

• brake shoe lining thickness, mm
• nominal - 10.0
• minimum acceptable - 2.0
• brake disc thickness, mm
• nominal - 24.0
• minimum acceptable - 22.4
• disc runout, mm — 0.05
• rotational resistance after installation of new brake pads (tangential force on the radius of the mounting bolts), N — no more than 40
• axial clearance of the front wheel hub, mm — no more than 0.05

Rear drum brakes

• thickness of friction linings of brake shoes, mm
• nominal - 4.38
• minimum acceptable - 1.0
• inner diameter of brake drum, mm
• nominal - 203
• maximum allowed - 205

Parking brake lever travel

When tightened with a force of 196 N - 5-7 clicks

Anti-lock braking system

• gap between rear wheel speed sensor and rotor teeth, mm — 0.1-1.9
• internal resistance of the wheel speed sensor, kOhm — 1.28-1.92
• wheel speed sensor insulation resistance, kOhm — not less than 100

Rear disc brakes for cars produced since 2000

Type - single-piston caliper with solid brake disc

Diameter x thickness of brake disc, mm — 211.6x10.0

Diameter of the working brake cylinder, mm — 35.0

Thickness of brake pads, mm — 9.0

Gap adjustment - automatic

Basic data for adjustment and control of cars manufactured since 2000

Rear brake pressure regulator for vehicles without ABS - switching point, MPa - 1.96

• liquid outlet pressure (inlet pressure), MPa — 3.92 ±0.4 (9.81)
• the pressure difference at the regulator outlet between the left and right circuits, MPa — no more than 0.4

Front disc brake

• brake pad thickness, mm — 10.0 (min 2,0)
• brake disc thickness, mm — 24.0 (rjnin 22,4)
• runout, mm — no more than 0.03
• rotational resistance after installation of new brake pads (tangential force on the radius of the mounting bolts), N — no more than 40

Rear disc brake

• brake pad thickness, mm — 9.0 (min 2,0)
• brake disc thickness, mm — 10.0 (min 8,4)
• runout, mm — no more than 0.08
• rotational resistance after installation of new brake pads (tangential force on the radius of the mounting bolts), N — no more than 20

Liquids and lubricants

Brake fluid - DOT3 or DOT4

Contact surfaces of rear brake boot and brake pads, brake pads and automatic clearance adjuster - SAE J310, NLGI No.1 brake grease

General information

The vehicle uses a service brake system with a vacuum brake booster, hydraulic drive and diagonal circuit separation, which significantly increases the safety of driving the vehicle. The hydraulic brake system is designed such that each circuit includes the brakes of one front and one rear wheel. Under normal conditions, both circuits work together. However, if one of the hydraulic circuits fails, the brakes of two diagonally located wheels will be able to perform full braking.

The front disc brakes feature single-piston sliding calipers that provide even pressure to each brake pad.

Models with rear drum brakes have slave and leading brake shoes, which are actuated by two-piston working brake cylinders. The rear drum brakes have a self-adjusting mechanism, which is necessary to compensate for brake shoe wear. As the friction material of the brake shoes wears out, when the brake pedal is pressed, the self-adjusting mechanism is automatically activated, which changes the position of the brake shoe and eliminates the excessive gap formed between the surface of the friction material of the brake shoe and the brake drum.

On diesel engine models, a vacuum pump is installed, which is driven directly by the camshaft, to create the vacuum required for the brake booster to operate.

This braking system provides a high degree of reliability and durability combined with increased braking efficiency and sensitivity.



All vehicles are equipped with a mechanically operated parking brake that acts on the brake shoes of the rear wheels.

Note: When servicing any part of the brake system, work carefully and methodically, and maintain cleanliness when repairing any part of the hydraulic system. Always replace assemblies in a set, where applicable, if in doubt about their condition, and use only genuine spare parts or at least of known good quality.

The following changes have been made to vehicles produced since 2000:

• rear disc brakes are installed instead of rear drum brakes;
• on vehicles with ABS, instead of a pressure regulator, an electronic brake force distribution (EBD) system is installed, ensuring optimal distribution of braking forces;
• on cars without ABS, the technical requirements for the pressure regulator have been changed;
• on a vehicle with a 1.9 l diesel engine, the sequence of removal and installation of the brake booster has been changed.

The material was borrowed from the website mitsubishiman

The anti-lock braking system (ABS) uses electronic control to regulate the brake fluid pressure in the rear brake circuit during braking by means of control electromagnetic valves of the rear brake mechanisms, which operate in accordance with the intensity of the vehicle's braking and the degree of slippage of the front and rear wheels, which is determined by signals received from the vehicle's wheel speed sensors. The EBD system is a control system that ensures high-quality control of vehicle braking in order to reduce the braking distance and improve its controllability.



Since the system provides optimum rear brake force regardless of vehicle load and road surface conditions, the system reduces the required brake pedal force, especially when the vehicle is heavily loaded or when driving on roads with a high coefficient of adhesion.

Since the load on the front brakes is reduced, the temperature of the brake pads during braking is reduced and their wear is reduced.