Mitsubishi Pajero Pinin. Manual - part 234

BASIC BRAKE SYSTEM – 

Service Specifications

35A-4

SERVICE SPECIFICATIONS

Items

Standard value

Limit

Brake pedal height   mm

L.H. drive vehicles

201  – 204

–

R.H. drive vehicles

201.7  – 204.7

–

Brake pedal play   mm

3  – 8

–

Brake pedal to floorboard clearance when the brake pedal is depressed   mm

105 or more

–

Brake booster push rod protrusion amount   mm

L.H. drive vehicles with ABS

22.7 – 22.9

–

L.H. drive vehicles without
ABS and R.H. drive vehicles

23.93 – 24.18

–

Load sensing proportion-
ing valve output fluid
pressure (Input fluid pres-

When load sensing spring length is 199 mm (when
unladen)

4.2 – 6.0  (9.8)

–

pressure (Input fluid pres-
sure)   MPa

When load sensing spring length is 217 mm (when
laden)

9.7 – 10.5 (9.8)

–

laden)

14.5 – 16.3 (16.7)

–

Output fluid pressure difference between left and right
 MPa

–

0.39

Load sensing spring length <Distance between spring ends>   mm

194 – 198

–

Front disc brake

Pad thickness   mm

10.0

2.0

Disc thickness mm

22 0

20 4

Disc thickness   mm

22.0

20.4

Disc runout   mm

–

0.06

Drag force   N

69

–

Rear disc brake

Pad thickness  mm

10.0

2.0

Disc thickness  mm

9.4

7.8

Disc runout  mm

–

0.08

Drag force  N

34

–

Front hub end play   mm

–

0.2

Rear hub end play   mm

–

0.025

BASIC BRAKE SYSTEM – 

Lubricants/Sealant/Special Tools

35A-5

LUBRICANTS

Items

Specified Lubricant

Quantity

Brake fluid

DOT3 or DOT4

As required

Vacuum sensor grommet

Silicone grease

Brake booster seal

Piston boot, piston seal

Repair kit grease

Guide pin, lock pin

Piston, wheel cylinder body

DOT3 or DOT4

SEALANT

Items

Specified sealant

Remarks

Fitting

3M ATD Part No. 8661 or equivalent

Semi-drying sealant

SPECIAL TOOLS

Tool

Number

Name

Use

A

MB990964
A: MB990520

Brake tool set

Pushing-in of the disc brake piston

A

B

A: MB990998
B: MB991000

A: Front hub re-
mover and installer
B:  Spacer

When bearing provisional holding
MB991000, which belongs to MB990998,
should be used as a spacer.

MB991568

Push rod adjusting
socket

Adjustment of the brake booster push rod
protrusion amount

BASIC BRAKE SYSTEM – 

On-vehicle Service

BASIC BRAKE SYSTEM – 

On-vehicle Service

35A-6

ON-VEHICLE SERVICE

BRAKE PEDAL CHECK AND ADJUSTMENT

BRAKE PEDAL HEIGHT

1.

Turn up the carpet, etc. under the brake pedal.

2.

Measure the brake pedal height as illustrated.

Standard value (A): 

<L.H. drive vehicles> 201 – 204 mm
<R.H. drive vehicles> 201.7 – 204.7 mm

3.

If the brake pedal height is not within the standard value,
follow the procedure below.
(1) Disconnect the stop lamp switch connector.
(2) Loosen the stop lamp switch by turning it approx.

1/4 turns anticlockwise.

(3) Remove the pin, and then adjust so that the brake

pedal height meets the standard value by turning the
clevis.

NOTE
When the clevis is turned 180

°

, the pedal height is

changed approximately 2.3 mm.

(4) Screw in the stop lamp switch until it touches the

stopper. At this time, support the brake pedal to the
highest position by hand.

(5) Lock the stop lamp switch by turning it approx. 1/4

turns clockwise, and confirm that the clearance
between the switch plunger and the stopper is as
shown.

(6) Connect the connector at the stop lamp switch.

Caution
Check that the stop lamp does not illuminate when
the brake pedal is not depressed.

4.

For A/T, check the key interlock and shift lock mechanisms.
(Refer to GROUP 23 – On-vehicle Service.)

5.

Return the carpet, etc.

BRAKE PEDAL FREE PLAY

1.

With the engine stopped, depress the brake pedal two
or three times. After eliminating the vacuum in the power
brake booster, press the pedal down by hand, and confirm
that the amount of movement before resistance is met
(the free play) is within the standard value range.

Standard value (B): 3 – 8 mm

Operating
rod lock nut

Operating rod

Stop lamp switch

A

Stopper

0.5 – 1.0 mm

B

BASIC BRAKE SYSTEM – 

On-vehicle Service

35A-7

2.

If the brake pedal play is not within the standard value,
check the following, and adjust or replace if necessary:

D

Excessive play between the brake pedal and the clevis
pin, or between the clevis pin and the brake booster
operating rod

D

Brake pedal height

D

Installation position of the stop lamp switch, etc.

CLEARANCE BETWEEN BRAKE PEDAL AND FLOOR
BOARD

1.

Turn up the carpet etc. under the brake pedal.

2.

Start the engine, depress the brake pedal with
approximately 490 N of force, and measure the clearance
between the brake pedal and the floorboard.

Standard value (C): 105 mm or more

3.

If the clearance is outside the standard value, check for
air trapped in the brake line, thickness of the disc  brake
pad or the drum brake lining and dragging in the parking
brake.
Adjust and replace defective parts as required.

4.

Return the carpet, etc.

BRAKE BOOSTER OPERATING TEST

For simple checking of the brake booster operation, carry
out the following tests:
1.

Run the engine for one or two minutes, and then stop
it.
If the pedal depresses fully the first time but gradually
becomes higher when depressed succeeding times, the
booster is operating properly. If the pedal height remains
unchanged, the booster is defective.

2.

With the engine stopped, step on the brake pedal several
times.
Then start the engine while the brake pedal is stepped
on.
If the pedal moves downward slightly, the booster is in
good condition. If there is no change, the booster is
defective.

Good

No good

When engine is
stopped

When engine is
started