Mitsubishi Grandis. Manual — part 895
FRONT DISC BRAKE ASSEMBLY
BASIC BRAKE SYSTEM
35A-22
<<A>> PISTON BOOT/PISTON REMOVAL
CAUTION
• Blow air little by little to remove the pistons.
The pistons will rush out if a force of air is
applied suddenly.
• If one piston has been removed completely, it
will become impossible to remove the second
piston.
Remove the pistons and the piston boots by pumping
in air from the brake hose connection. Be sure to use
the handle of a plastic hammer and adjust the height
of the two pistons so that the pistons protrude evenly.
<<B>> PISTON SEAL REMOVAL
CAUTION
Do not use a flat-tipped screwdriver or similar
tool to remove the piston seal. These may
damage the inner side of the cylinder.
1. Remove the piston seal with your finger tip.
2. Clean the piston surface and inner cylinder with
alcohol or brake fluid DOT 3 or DOT 4.
INSPECTION
M1351006300442
• Check the cylinder for wear, damage or rust.
• Check the piston surface for wear, damage or
rust.
• Check the caliper body or sleeve for wear.
• Check the pad for damage or adhesion of grease,
check the backing metal for damage.
PAD WEAR CHECK
WARNING
•
Always replace both brake pads on each
wheel as a set. Failure to do so will result
in uneven braking, which may cause
unreliable brake operation.
•
If there is significant difference in the
thickness of the pads on the left and right
sides, check the sliding condition of the
piston and slide pins.
1. Measure thickness at the thinnest and most worn
area of the pad.
Standard value: 10.0 mm
Minimum limit: 2.0 mm
2. Replace the pad assembly if pad thickness is less
than the limit value.
AC202257
AC301355AB
AC313218AB
REAR DISC BRAKE ASSEMBLY
BASIC BRAKE SYSTEM
35A-23
REAR DISC BRAKE ASSEMBLY
REMOVAL AND INSTALLATION
M1351007000422
REMOVAL SERVICE POINTS
<<A>> BRAKE DISC REMOVAL
If the brake disc is seized, install M8
× 1.25 bolts as
shown, and remove the disc by tightening the bolts
evenly and gradually.
INSTALLATION SERVICE POINTS
>>A<< REAR BRAKE ASSEMBLY
INSTALLATION
AC302748 AD
60 ± 5 N·m
15 ± 2 N·m
1
4
2
5
15 ± 2 N·m
3
6
Removal steps
•
Brake fluid draining
1. Clip
2. Brake pipe and brake hose
connection
3. Brake hose and rear brake assembly
connection
4. Brake hose
5. Rear brake assembly
<<A>>
6. Rear brake disc
Installation steps
6. Rear brake disc
>>A<<
5. Rear brake assembly
4. Brake hose
3. Brake hose and rear brake assembly
connection
2. Brake pipe and brake hose
connection
1. Clip
•
Brake Fluid Supplying and Air
Bleeding (Refer to
>>B<<
•
Brake drag force check
AC302117AC
Bolts
(M8×1.25)
AC311463
REAR DISC BRAKE ASSEMBLY
BASIC BRAKE SYSTEM
35A-24
1. In order to measure the brake drag torque,
measure the hub torque with the pads removed by
the following procedure.
Use a spring balance to measure the hub torque
in the forward direction. Record hub torque with
pads removed.
CAUTION
Do not let any oil, grease or other contamination
get onto the friction surfaces of the pads and
brake discs.
2. After re-installing the caliper support to the
backing plate, install the pad clips and the pads to
the caliper support.
3. Clean the piston and insert into cylinder with
special tool disc brake piston expander
(MB990520).
4. Be careful that the piston boot does not become
caught, when lowering the caliper assembly and
installing the lock pin. Tighten the lock pin to the
specified torque.
Tightening torque: 44
± 5 N⋅m
>>B<< BRAKE DRAG FORCE CHECK
1. Check the brake drag force as follows.
(1) Start the engine and hold the brake pedal
down for 5 seconds. (Pedal depression force:
approximately 200 N)
(2) Stop the engine.
(3) Turn the brake disc forward 10 times.
(4) Use a spring balance to measure the hub
torque with pads installed in the same
direction as earlier.
(5) Calculate the drag force of the disc brake
[difference between hub torque with pads
installed and hub torque with pads removed].
Standard value: 68 N or less
2. If the brake drag force exceeds the standard
value, disassemble and clean the piston. Check
for corrosion or worn piston seal, and check the
sliding condition of the lock pin and guide pin.
INSPECTION
M1351007100311
BRAKE DISC CHECK
Disc run-out (Refer to
AC301357
MB990520
AB
AC311464
REAR DISC BRAKE ASSEMBLY
BASIC BRAKE SYSTEM
35A-25
DISASSEMBLY AND REASSEMBLY
M1351007200385
AC303226
7
6
9
AC
1
1
2
2
2
3
3
3
3
10
10
4
4
4
5
5
5
8
44 ± 5 N·m
13
12
14
11
13
14
11
10
10
7
7
6
8
10
10
15
15
13
12
14
11
9
7.9 ± 0.9 N·m
Brake caliper kit
Shim kit
Seal and boot kit
Pad set
Clip set
Repair kit grease
Disassembly steps
1. Pad and wear indicator assembly
2. Inner shim
3. Clip
4. Pad assembly
5. Outer shim
6. Lock pin
7. Bushing
8. Guide pin
9. Caliper support
10. Pin boot
11. Boot ring
<<A>>
12. Piston
<<B>>
13. Piston seal
<<A>>
14. Piston boot
15. Caliper body
Disassembly steps (Continued)
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