Mitsubishi Montero (2004+). Manual — part 1035
HYDRAULIC BRAKE BOOSTER (HBB)
TSB Revision
BASIC BRAKE SYSTEM
35A-139
3. Using special tool MB991926, remove the accumulator.
4. Remove the o-ring installed between the accumulator and
the HBB.
5. Install a new o-ring to a new accumulator.
6. Using special tool MB991926, install the new accumulator to
the HBB. The tightening torque of the accumulator is 54
± 5
N
⋅m (40 ± 4 ft-lb).
7. Fill the HBB brake system with brake fluid and bleed the
HBB brake system (Refer to
8. Carry out the function and operation check of power supply
system (Refer to
).
9. Erase HBB diagnostic trouble code (Refer to
10.Dispose of the removed accumulator (Refer to
ACCUMULATOR DISPOSAL
M1351015900011
WARNING
Do not disassemble, throw into fire, cut, weld, drop,
or shock the accumulator without purging filled gas.
1. Fix the accumulator on a vice as illustrated.
2. Punch in the area shown in the illustration to fix the drilling
position.
3. Set a drill [diameter
φ 4 mm (φ 0.16 in)] on the drill motor.
AC204060
AB
MB991926
ACCUMULATOR
AC204540
AC204541AB
Φ50 mm
Φ2.0 in
HYDRAULIC BRAKE BOOSTER (HBB)
TSB Revision
BASIC BRAKE SYSTEM
35A-140
WARNING
Wear protective glasses during drilling to protect you
from scattered chips caused by spouting gas.
4. Using a drill motor, drill a hole on the accumulator to purge
filled gas.
NOTE:
.
•
There is no danger of accumulator burst due to drilling
work.
•
You can hear purging sound of gas as soon as a hole is
made on the accumulator.
•
The filled gas is nitrogen, which is colorless, odorless
and harmless.
5. Dispose of the accumulator in compliance with Federal,
state, and local laws.
DISASSEMBLY AND ASSEMBLY
M1351010800064
AC204539
AC204377 AC
1
2
1.7 ± 0.3 N
•
m
15 ± 2.6 in-lb
25.5 ± 5.1 N
•
m
19 ± 3 ft-lb
19
21
20
22
23
3
4
BRAKE FLUID: DOT3 OR DOT4
24
5
6
7
8
9
15
15.2 ± 3 N
•
m
11 ± 2 ft-lb
3.0 ± 0.5 N
•
m
26 ± 4 in-lb
1.7 ± 0.1 N
•
m
15 ± 1 in-lb
14
13
12
11
18
17
16
10
7.8 ± 1.5 N
•
m
69 ± 13 in-lb
7.8 ± 1.5 N
•m
69 ± 13 in-lb
1.7 ± 0.3 N
•
m
15 ± 2.6 in-lb
54 ± 5 N
•
m
40 ± 4 ft-lb
N
N
N
N
11.8 ± 2.3 N
•m
104 ± 20 in-lb
HYDRAULIC BRAKE BOOSTER (HBB)
TSB Revision
BASIC BRAKE SYSTEM
35A-141
Required Special Tools:
• MB991926: Accumulator Wrench
• MB991620: Valve Spring Compressor Adapter
DISASSEMBLY SERVICE POINTS
.
<<A>> ACCUMULATOR REMOVAL
Using special tool MB991926, remove the accumulator. For
disposing of the accumulator, refer to
.
<<B>> SECURING THE HBB
Secure the HBB on a vice as shown in the illustration, using
spacers and special tool MB991620.
.
DISASSEMBLY STEPS
1.
RESERVOIR CAP
2.
RESERVOIR ASSEMBLY
3.
GROMMET
<<A>>
4.
ACCUMULATOR
5.
O-RING
6.
SPRING
7.
SILENT TUBE
8.
HOSE
9.
HBB BRAKE TUBE
10. LEAD WIRE
11. WASHER
12. BUSHING
13. COLLAR
14. PIN
15. BRACKET
16. BRACKET
17. BUSHING
18. PUMP MOTOR
19. CLEVIS
20. BOOT
<<B>>
•
SECURING THE HBB
<<C>>
21. SNAP RING
<<C>>
22. POWER PISTON ASSEMBLY
<<C>>
23. MASTER CYLINDER PISTON
ASSEMBLY
24. MASTER CYLINDER AND
HYDRAULIC UNIT ASSEMBLY
DISASSEMBLY STEPS (Continued)
AC204379AB
MB991926
ACX00675AB
MASTER CYLINDER
AND HYDRAULIC UNIT
ASSEMBLY
SPACER
MB991620
BUZZER
TSB Revision
BASIC BRAKE SYSTEM
35A-142
<<C>> SNAP RING/POWER PISTON ASSEMBLY/MASTER
CYLINDER PISTON ASSEMBLY REMOVAL
1. Press-in the push rod of the power piston assembly, and
remove the snap ring using a precision minus-slot
screwdriver or similar tool.
NOTE: If it is difficult to remove the snap ring, push the snap
ring from the hole ("A" in the illustration) on the cylinder
body.
CAUTION
Pull out the cylinder carefully so that the inner diameter of
the cylinder is not damaged.
2. Pull to remove the power piston assembly and the master
cylinder piston assembly straight from the body.
BUZZER
REMOVAL AND INSTALLATION
M1351016100018
ACX00676AB
A
ACX00677AB
MASTER CYLINDER
PISTON ASSEMBLY
POWER PISTON
ASSEMBLY
Pre-removal Operation
• Indicator Panel, Lower Center Panel Removal (Refer to
GROUP 52A, Floor Console
.)
Post-installation Operation
• Indicator Panel, Lower Center Panel Installation (Refer to
GROUP 52A, Floor Console
• Buzzer Operation Check (Refer to
AC204378 AB
5.0 ± 1.0 N
·
m
44 ± 9 in-lb
BUZZER
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