Mitsubishi Galant. Manual — part 509

ON-VEHICLE SERVICE

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BASIC BRAKE SYSTEM

35A-27

<Rear>
1. Remove dirt and rust from the brake disc surface.

2. Measure the disc thickness at four positions or more.

Standard value: 10.0 mm (0.4 inch)
Minimum limit: 8.4 mm (0.33 inch)

NOTE: Thickness variation (at least 8 positions) should not
be more than 0.015 mm (0.0006 inch).

3. If the disc is less than 8.4 mm (0.33 inch) thick, replace it

with a new one. If thickness variation exceeds the
specification, turn rotor with an on-the-car brake lathe
("Accuturn-8750" or equivalent).
If the calculated final thickness is less than the standard
value, replace the disc.

BRAKE LINING THICKNESS CHECK

M1351003000055

CAUTION

•

Whenever the shoe and lining assembly is replaced,
replace both RH and LH assemblies as a set to prevent
the car from pulling to one side when braking.

•

If there is a significant difference in the thickness of the
shoe and lining assemblies on the left and right sides,
check the sliding condition of the piston.

NOTE: For brake lining thickness for drum-in-disc brake, refer
to GROUP 36, Parking Brake Drum

−

Inspection

P.36-12

.

1. Remove the brake drum.

2. Measure the thickness of the brake lining at the area with

the worst wear.

Standard value: 4.9 mm (0.19 inch)
Minimum limit: 1.0 mm (0.04 inch)

3. Replace the shoe and lining assembly if the brake lining

thickness is less than the limit or if it is not worn evenly. For
installation procedures for the shoe and lining assembly,
refer to

P.35A-49

.

BRAKE DRUM INSIDE DIAMETER CHECK

M1351003200082

1. Remove the brake drum.

2. Measure the inside diameter of the brake drum at two or

more locations.

Standard value: 228.6 mm (9.00 inches)
Limit: 230.6 mm (9.08 inches)

3. Replace the brake drums, shoe and lining assembly when

wear exceeds the limit value or is badly imbalanced.

AC000892

ACX00708AB

AC000893

ON-VEHICLE SERVICE

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BASIC BRAKE SYSTEM

35A-28

BRAKE LINING AND BRAKE DRUM CONTACT
CHECK

M1351003100052

1. Remove the brake drum.

2. Remove the shoe and lining assembly. (Refer to

P.35A-49

.)

3. Chalk the inner surface of the brake drum and rub with the

shoe and lining assembly.

4. Replace the shoe and lining assembly or brake drums if

there are any irregular contact areas.

NOTE: Clean off chalk after check.

BRAKE DISC INSIDE DIAMETER CHECK

M1351003200093

1. Remove the rear brake assembly, raise the rear brake

assembly and secure it with a wire, etc.

2. Remove the brake disc.

3. Measure the inside diameter of the hub and disc at two or

more locations.

Standard value: 168.0 mm (6.61 inches)
Limit: 169.0 mm (6.65 inches)

4. Replace the brake discs and shoe and lining assembly when

the wear exceeds the limit value or if the measured areas
are not equal to each other. (concentric).

AUTO ADJUSTER FUNCTION CHECK

M1351010100054

1. Remove the brake drum.

2. Operate the parking brake lever. Observe adjuster lever

movement for ratcheting action of the auto adjuster. Repair
or replace the lever(s) as required.

3. Remove the shoe-to-lever spring.

4. Remove the adjuster.

NOTE: It may be necessary to rotate the adjuster wheel bottom
to top to release tension.
5. Inspect the adjuster wheel for wear, i.e., flat spots, worn

teeth, etc. Replace if faulty.

6. Check both ends of the adjuster for smooth rotation.

Replace if faulty.

AC000856

ACX00709AB

AC000894

ADJUSTER
LEVER

PARKING
BRAKE
LEVER

AB

AC000895AB

ADJUSTER WHEEL

ON-VEHICLE SERVICE

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BASIC BRAKE SYSTEM

35A-29

7. Apply brake grease SAE J310, NLGI number 1 as shown.

8. To install adjuster, assemble the adjuster so it is at its

minimum length and insert between shoe and lining
assemblies.

9. Install adjuster lever and shoe-to-lever spring.

10.Rotate the adjuster wheel top to bottom until the drum has a

slight drag when the drum is installed.

MASTER CYLINDER FUNCTION CHECK

M1351010200051

1. Remove the reservoir cap and diaphragm.

2. While watching the open reservoir from a distance of 50 cm

(20 inches), have an assistant depress the brake pedal.
If there was a stream of brake fluid rising from the reservoir,
proceed to Step 3.
If there was no stream of brake fluid rising from the
reservoir, repair or replace the master cylinder.

3. While watching the open reservoir from a distance of 50 cm

(20 inches), have the assistant release the brake pedal.
If there was a small amount of air bubbles rising through the
brake fluid, master cylinder function is normal.
If there were no bubbles rising through the brake fluid, repair
or replace the master cylinder.

AC000896

BRAKE PEDAL

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BASIC BRAKE SYSTEM

35A-30

B R A K E PED A L

REMOVAL AND INSTALLATION

M1351003400053

Post-installation Operation
Brake Pedal Adjustment (Refer to

P.35A-17

.)

AC000897

14 N·m
124 in-lb

12 N·m
106 in-lb

6

N

2

1

3

10

11

5

4

9

8

7

N

AC

REMOVAL STEPS

1. HARNESS CONNECTOR
2. STOPLIGHT SWITCH
3. ADJUSTER
4. PEDAL STOPPER
5. SNAP PIN
6. CLEVIS PIN
7. COTTER PIN <A/T>

8. SHIFT LOCK CABLE CONNECTION

<A/T>

9. RETURN SPRING
10. PEDAL PAD
11. BRAKE PEDAL AND PEDAL SUP-

PORT MEMBER ASSEMBLY

REMOVAL STEPS (Continued)