Mitsubishi Grandis. Manual — part 890
GENERAL INFORMATION
BASIC BRAKE SYSTEM
35A-2
GENERAL INFORMATION
M1351000100547
The brake system has been designed to give greater
reliability and durability and to provide excellent
braking performance.
CONFIGURATION DIAGRAM
SPECIFICATIONS
AC312153
Brake booster
Rear disc brake
Master cylinder
Front disc brake
Hydraulic unit
AC
Item
Specification
Master cylinder
Type
Tandem type
I.D. mm
25.4
Brake booster
Type
Vacuum type, tandem
Effective dia. of power cylinder mm
205 + 230
Boosting ratio
8.5 (pedal pressure: 60 N)
10.5 (pedal pressure: 110 N)
Rear wheel hydraulic control method
Electronic brake-force distribution (EBD)
Front brakes
Type
Floating caliper, 2 piston, ventilated disc
Disc effective dia.
× thickness mm
241
× 26
Wheel cylinder I.D. mm
45.4
× 2
Pad thickness mm
10.0
Clearance adjustment
Automatic
SERVICE SPECIFICATIONS
BASIC BRAKE SYSTEM
35A-3
SERVICE SPECIFICATIONS
M1351000300585
LUBRICANTS
M1351000400515
Rear disc brakes
Type
Floating caliper, 1 piston, solid disc
Disc effective dia.
× thickness mm
258
× 10
Wheel cylinder I.D. mm
38.1
Pad thickness mm
10.0
Clearance adjustment
Automatic
Brake fluid
DOT3 or DOT4
Item
Specification
Item
Standard value
Limit
Brake pedal height mm
211
− 214
−
Brake pedal free play mm
3
− 8
−
Brake pedal to floor board clearance mm
140 or more
−
Disc brake pad thickness mm
10.0
2.0
Disc brake disc thickness mm
Front
26.0
24.4
Rear
10.0
8.4
Disc brake disc run-out mm
Front
−
0.03
Rear
−
0.04
Disc brake drag force N
Front/Rear
68 or less
−
Wheel bearing axial play mm
Front/Rear
−
0.05
Brake booster push rod protruding length mm (When applying
negative pressure of 66.7 kPa to the brake booster)
11.3
− 11.7
−
Item
Specified lubricant
Quantity
Brake fluid
DOT3 or DOT4
As required
Primary piston assembly, secondary piston
assembly, master cylinder body, caliper body, piston,
piston seal
Guide pin, lock pin, bushing, pin boot, piston boot,
boot ring
Repair kit grease
As required
SPECIAL TOOLS
BASIC BRAKE SYSTEM
35A-4
SPECIAL TOOLS
M1351000600445
ON-VEHICLE SERVICE
BRAKE PEDAL CHECK AND
ADJUSTMENT
M1351000900521
BRAKE PEDAL HEIGHT
1. Turn up the carpet, etc. under the brake pedal.
2. Measure the brake pedal height as illustrated.
Standard value (A): 211
− 214 mm
[From the surface of dash panel to the face
of pedal pad]
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
approximately one quarter of a turn
anticlockwise.
(3) Remove the brake pedal assembly (Refer to
(4) Adjust the brake pedal height by turning the
clevis of brake booster.
NOTE: When the clevis is turned 180
°
, the
pedal height is changed approximately 2 mm.
(5) Install the brake pedal assembly (Refer to
).
(6) Screw in the stop lamp switch until its thread
contacts the stopper, and fix the stop lamp
switch by turning it approximately one quarter
of a turn clockwise.
Tool
Number
Name
Use
MB991568
Push rod adjusting
socket
Adjustment of the brake booster
push rod protrusion amount
MB990964
A: MB990520
Brake tool set
A: Disc brake
piston expander
Pushing-in of the disc brake
piston
MB990964
A
B
AC301990 AE
A
Stop lamp
switch
AC303157AC
Pin
Brake pedal assembly
Stop lamp
switch
Clevis
Brake booster
ON-VEHICLE SERVICE
BASIC BRAKE SYSTEM
35A-5
(7) Measure the brake pedal height, and ensure
that the measured value is within the standard
value. When it is out of the standard value,
repeat Step (3) - (6).
(8) Check that the clearance between the stop
lamp switch and the stopper is as shown.
CAUTION
Check that the stop lamp does not illuminate
when the brake pedal is not depressed.
(9) Connect the connector at the stop lamp
switch.
4. For vehicles with A/T, check the key interlock/shift
lock mechanism (Refer to GROUP 23A,
On-vehicle service
− key interlock/shift lock
mechanism check and adjustment
5. Return the carpet, etc.
BRAKE PEDAL FREE PLAY
1. Turn the ignition switch to the "LOCK" (OFF)
position, depress the brake pedal two or three
times. After eliminating the vacuum in the brake
booster, press the pedal down by hand, and
confirm that the amount of movement before
resistance is met (free play) is within the standard
value range.
Standard value: 3
− 8 mm
2. If the brake pedal play is not within the standard
value, check the following, and adjust or replace if
necessary:
• Excessive play between the brake pedal and the
clevis pin, or between the clevis pin and the
brake booster operating rod
• Brake pedal height
• 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 500 N of force, and measure the
clearance between the brake pedal and the floor
board.
Standard value (C): 140 mm or more
[From the surface of floor board to the face
of pedal pad]
3. If the clearance is outside the standard value,
check for air trapped in the brake line, thickness of
the disc brake pad, clearance between the lining
and the drum and dragging in the parking brake.
And then adjust and replace defective parts as
required.
4. Return the carpet etc. to its original position.
BRAKE BOOSTER OPERATING TEST
M1351001000446
1. For simple checking of the brake booster
operation, carry out the following tests:
AC313310AB
0.5 – 1.5 mm
Stop lamp switch
Pedal stopper
AC301990AF
B
AC301990AG
C
AC000870
Good
No good
AE
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст