Mitsubishi Galant. Manual — part 503

35A-3

SPECIFICATION(S) . . . . . . . . . . . . . .

35A-54

FASTENER TIGHTENING SPECIFICATIONS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

35A-54

GENERAL SPECIFICATIONS . . . . . . . . . .

35A-55

SERVICE SPECIFICATIONS . . . . . . . . . . .

35A-55

LUBRICANTS . . . . . . . . . . . . . . . . . . . . . . .

35A-56

SEALANT . . . . . . . . . . . . . . . . . . . . . . . . . .

35A-57

GENERAL INFORMATION

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BASIC BRAKE SYSTEM

35A-4

.

G EN ER A L IN FO R M ATIO N

M1351000100064

The basic brake system uses a X-type hydraulic feed
arrangement. The left front and right rear brakes
operate together from the same circuit, right front
and left rear operate likewise. If a leak develops in
the left front line or piston, the right rear brake would
be affected. For safety and control, the right front and
left rear circuit operates normally, providing stable
braking. In this case, the left front leak must be
repaired immediately as the right front left rear circuit
is only provided half the braking power required for
this vehicle. The main features are as follows:

•

A tandem type master cylinder is equipped in all
models.

•

Tandem type 8 + 9-inch brake booster is used.

•

The following type of brakes are used.
Front:
Floating caliper, 1-piston, ventilated disc brakes.
Rear:
Leading-trailing type drum brake. <2.4L Engine>
Floating caliper, 1-piston, solid disc brakes. <3.0L
Engine>

CONFIGURATION DIAGRAM

B A SIC B R A K E SYSTEM D IA G N O SIS

INTRODUCTION TO BASIC BRAKE SYSTEM DIAGNOSIS

M1351009700063

Hydraulic brakes configured of the brake pedal,
master cylinder, brake booster and drum or disc
brakes, are incorporated. Malfunctions such as
insufficient braking power or the generation of noise
may occur due to wear, damage or incorrect
adjustment of these parts.

BASIC BRAKE SYSTEM DIAGNOSTIC TROUBLESHOOTING STRATEGY

M1351009800060

Use these steps to plan your diagnostic strategy. If
you follow them carefully, you will be sure that you

have exhausted most of the possible ways to find a
basic brake system fault.

AC003717 AB

REAR BRAKE

BRAKE PEDAL

FRONT BRAKE

PROPORTIONING VALVE

MASTER CYLINDER

BRAKE BOOSTER

BASIC BRAKE SYSTEM DIAGNOSIS

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BASIC BRAKE SYSTEM

35A-5

1. Gather information from the customer.

2. Verify that the condition described by the

customer exists.

3. Find the malfunction by following the symptom

chart.

4. Verify malfunction is eliminated.

SYMPTOM CHART

M1351009900078

SYMPTOM PROCEDURES

INSPECTION PROCEDURE 1: Vehicle pulls to one side when brakes are applied

DIAGNOSIS

STEP 1. Check for oil, water, etc., on the pad or lining
contact surface of all brakes.

Q: Is oil, water, etc., on the pad or lining contact surface?

YES : Replace the part and determine and repair source/

cause of foreign material. Then go to Step 8.

NO : Go to Step 2.

STEP 2. Check the lining and brake drum contact.
<Vehicles equipped with rear drum brake>
(1) If equipped with rear disc brake, go to Step 5.
(2) Put chalk on the inner surface of the brake drum. Rub the

lining against the drum inner surface.

NOTE: Clean off chalk after check.

Q: Does the lining wipe off or smudge the chalk across the

full width of the lining?
YES : Go to Step 3.
NO : Replace the shoe and lining assemblies on both

sides. Then go to Step 4.

SYMPTOMS

INSPECTION
PROCEDURE

REFERENCE
PAGE

Vehicle pulls to one side when brakes are applied

1

P.35A-5

Insufficient braking power

2

P.35A-7

Increased pedal stroke (Reduced pedal-to-floor board clearance)

3

P.35A-8

Brake drag

4

P.35A-9

Scraping or grinding noise when brake are applied

5

P.35A-11

Squealing, groaning or chattering noise when brake are applied

6

P.35A-13

Squealing noise when brakes are not applied

7

P.35A-13

Groaning, clicking or rattling noise when brakes are not applied

8

P.35A-15

AC000856

BASIC BRAKE SYSTEM DIAGNOSIS

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BASIC BRAKE SYSTEM

35A-6

STEP 3. Check the auto adjuster function (Refer to

P.35A-

28

.).

Q: Is there fault?

YES : Repair it. Then go to step 8.
NO : Go to Step 4.

STEP 4. Check the brake drum inside diameter (Refer to

P.35A-27

.).

Q: Is the brake drum inside diameter outside of

specifications?
YES : Replace the part. Then go to Step 8.
NO : Go to Step 5.

STEP 5. Check disc brake pistons for smooth operation.
(1) With engine not running, depress the brake pedal rapidly

several times to deplete booster vacuum reserves.

(2) Test each disc brake assembly one at a time.

a. Remove the lower caliper bolt, then remove caliper from

mount.

b. Have an assistant slowly depress the brake pedal.

Confirm piston(s) extend slowly and smoothly with no
jumpiness. Repeat for each disc brake assembly.

Q: Do (does) the piston(s) move correctly?

YES : Go to Step 6.
NO : Disassemble and inspect brake assembly (Refer to

P.35A-37

and/or

P.35A-44

.). Then go to Step 8.

STEP 6. Check brake disc(s) for run out (Refer to

P.35A-24

or

P.35A-25

.).

Q: Is runout outside of specifications?

YES : Repair and replace as necessary. Then go to Step 8.
NO : Go to Step 7.

STEP 7. Check brake discs for correct thickness (Refer to

P.35A-26

.).

Q: Is the thickness outside of specifications?

YES : Repair or replace as necessary. Then go to Step 8.
NO : Go to Step 8.

STEP 8. Check symptoms.

Q: Is the symptom eliminated?

YES : Repair complete.
NO : Start over at Step 1. If a new symptom appears, refer

to the symptom chart.