Mitsubishi Galant (2004+). Manual - part 1693

35A-1

GROUP 35A

BASIC BRAKE 

SYSTEM

CONTENTS

GENERAL DESCRIPTION. . . . . . . . .

35A-2

MASTER CYLINDER . . . . . . . . . . . . .

35A-4

BRAKE BOOSTER  . . . . . . . . . . . . . .

35A-5

FRONT BRAKE  . . . . . . . . . . . . . . . . .

35A-6

REAR BRAKE. . . . . . . . . . . . . . . . . . .

35A-7

BRAKE LINE. . . . . . . . . . . . . . . . . . . .

35A-8

GENERAL DESCRIPTION

BASIC BRAKE SYSTEM

35A-2

GENERAL DESCRIPTION

M2350000100291

The brake system has been designed to give greater 
reliability and durability and to provide excellent brak-
ing performance.

FEATURES

.

Improved braking performance

1. An 8+9 inch tandem brake booster provides suffi-

cient braking force in sudden braking range.

2. 15-inch front ventilated disc brakes provide stable 

braking force and improved braking feel. 
<2.4L engine>

3. 16-inch front ventilated disc brakes provide stable 

braking force and improved braking feel. 
<3.8L engine>

4. 14-inch rear solid disc brakes are used.

.

Improved stability

1. A 4-wheel anti-lock braking system (4ABS) pre-

vents slipping caused by the vehicle wheels lock-
ing up, in order to maintain a stable vehicle 
posture and steering performance.

2. An electronic brake-force distribution (EBD) 

makes it possible to maintain the maximum 
amount of braking force even when the vehicle's 
load is unevenly distributed. <Vehicles with ABS>

3. A rear wheel early lock-prevention proportioning 

valve are used. <Vehicles without ABS>

4. Front- and rear-wheel X-type brake line layout 

are used.

5. Ventilated discs on the front brakes improve 

anti-fading performance.

.

Improved serviceability

1. A diagnosis function for the ABS system to make 

inspection easier.

2. An outer disc separated hub and rotor make 

removal and installation easier.

3. The master cylinder reservoir tank cap is colored 

white to make identification easier.

4. The ABS-ECU and hydraulic unit are integrated 

to make them more compact and light-weight.

CONSTRUCTION DIAGRAM

AC305395

BRAKE BOOSTER

HYDRAULIC UNIT
(INTEGRATED WITH
THE ABS-ECU)

MASTER CYLINDER

FRONT DISC BRAKE

REAR DISC BRAKE

AB

<VEHICLE WITH ABS>

GENERAL DESCRIPTION

BASIC BRAKE SYSTEM

35A-3

SPECIFICATIONS

AC305394

BRAKE BOOSTER

MASTER CYLINDER AND 
PROPORTIONING VALVES

FRONT DISC BRAKE

REAR DISC BRAKE

AB

<VEHICLE WITHOUT ABS>

ITEM

SPECIFICATION

Master 
cylinder

Type

Tandem type

I.D. mm (in)

25.4 (1.0)

Brake 
booster

Type

Vacuum type, tandem

Effective dia. of power cylinder 
mm (in)

205 + 230 (8 + 9)

Boosting ratio

6.5

Rear wheel hydraulic control method

Electronic brake-force distribution (EBD)
<Vehicles with ABS>
Proportioning valves <Vehicles without ABS>

Front brakes Type

Floating caliper, 1 piston, ventilated disc

Disc effective dia 

×

 thickness 

mm (in)

222 

×

 26 (8.7 

×

 1.0) <2.4L engine>

241 

×

 26 (9.5 

×

 1.0) <3.8L engine>

Wheel cylinder I.D. mm (in)

60.33 (2.38)

Pad thickness mm (in)

10.0 (0.39)

Clearance adjustment

Automatic

Rear brakes

Type

Floating caliper, 1 piston, solid disc

Disc effective dia 

×

 thickness 

mm (in)

222 

×

 10 (8.7 

×

 0.39)

Wheel cylinder I.D. mm (in)

34.93 (1.38)

Pad thickness mm (in)

10.0 (0.39)

Clearance adjustment

Automatic

Brake fluid

DOT3 or DOT4

MASTER CYLINDER

BASIC BRAKE SYSTEM

35A-4

MASTER CYLINDER

M2350001000220

The master cylinder is a tandem-type.

AC305427

AB

MASTER CYLINDER BODY

SECONDARY PISTON ASSEMBLY

PRIMARY PISTON ASSEMBLY

PISTON RETAINER

<VEHICLES WITHOUT ABS>

AC305428

AB

MASTER CYLINDER BODY

SECONDARY PISTON ASSEMBLY

PRIMARY PISTON ASSEMBLY

PISTON RETAINER

<VEHICLES WITH ABS>