Nissan X-Trail 32. Manual — part 126
BR-98
< REMOVAL AND INSTALLATION >
[RHD]
BRAKE MASTER CYLINDER
• Place the reservoir tank with the chamfered screw hole
(
) facing up.
• Always set copper plates or cloth between vise grips
when fixing the cylinder body to a vise.
• Never overtighten the vise.
4.
Tilt the reservoir tank so that a mounting screw can be fixed.
Assemble with screw.
Inspection
INFOID:0000000010838584
INSPECTION BEFORE REMOVAL
Check the brake fluid level switch. Refer to
BRC-159, "Component Inspection"
INSPECTION AFTER INSTALLATION
Check the following items and replace if necessary.
• Check the master cylinder for deformation, twist, contact with other parts or looseness of connection.
• Check for fluid leakage from connection. Refer to
CAUTION:
If the fluid leakage is present, retighten to the specified torque. Replace parts if necessary.
JPFIA0826ZZ
BRAKE BOOSTER
BR-99
< REMOVAL AND INSTALLATION >
[RHD]
C
D
E
G
H
I
J
K
L
M
A
B
BR
N
O
P
BRAKE BOOSTER
Exploded View
INFOID:0000000010838585
Removal and installation
INFOID:0000000010838586
REMOVAL
CAUTION:
Never spill or splash brake fluid on painted surfaces. Brake fluid may seriously damage paint. Wipe it
off immediately and wash with water if it gets on a painted surface. For brake component parts, never
wash them with water.
1.
Perform inspection before removal. Refer to
BR-100, "Inspection and Adjustment"
2.
Drain brake fluid. Refer to
3.
Disconnect vacuum sensor harness connector.
4.
Remove brake master cylinder assembly. Refer to
BR-95, "Removal and Installation"
.
5.
Remove vacuum hose from check valve. Refer to
BR-102, "Removal and Installation"
.
6.
Remove cowl top extension. Refer to
EXT-25, "Removal and Installation"
7.
Remove brake tube between master cylinder assembly and ABS actuator and electric unit (control unit).
Refer to
BR-88, "FRONT : Exploded View"
.
Master cylinder assembly
Check valve
Vacuum sensor
Brake booster
Gasket
: N·m (kg-m, ft-lb)
JSFIA2240GB
BR-100
< REMOVAL AND INSTALLATION >
[RHD]
BRAKE BOOSTER
8.
Remove snap pin
and clevis pin
.
9.
Remove nuts on brake booster and brake pedal assembly.
CAUTION:
Hold the brake booster so as to avoid dropping out.
10. Remove brake booster.
CAUTION:
Never deform or bend the brake tubes.
11. Remove check valve from brake booster.
12. Remove vacuum sensor from brake booster.
13. Perform inspection after removal. Refer to
BR-100, "Inspection and Adjustment"
INSTALLATION
CAUTION:
Never spill or splash brake fluid on painted surfaces. Brake fluid may seriously damage paint. Wipe it
off immediately and wash with water if it gets on a painted surface. For brake component parts, never
wash them with water.
Note the following, and install in the reverse order of removal.
• Install check valve
and vacuum sensor
as shown in figure.
• Be careful not to damage brake booster stud bolt threads. If brake booster is tilted during installation, the
dash panel may damage threads.
• Never deform or bend the brake tubes when installing the brake booster.
• Always use new gasket between the brake booster and the dash panel.
• Replace clevis pin when found damage.
• Never allow foreign matter (e.g.dust) and oil other than brake fluid to enter reservoir tank.
• Perform the air bleeding. Refer to
BR-78, "Bleeding Brake System"
.
CAUTION:
Never reuse brake fluid to drain.
• Check each item of brake pedal.
Inspection and Adjustment
INFOID:0000000010838587
INSPECTION BEFORE REMOVAL
Air Tight
CAUTION:
Check the air tight condition when the master cylinder and the brake booster is installed.
1.
Check the air tight use a handy vacuum pump.
JPFIA0019ZZ
A
:
±
15
°
:Vehicle upper side
JSFIA2245ZZ
BRAKE BOOSTER
BR-101
< REMOVAL AND INSTALLATION >
[RHD]
C
D
E
G
H
I
J
K
L
M
A
B
BR
N
O
P
2.
If the air tight condition cannot be maintained, perform the following operation.
a.
Check the no dirt and dust are present on the brake booster and brake master cylinder mating faces.
Clean it if necessary.
b.
Check the O-ring on the master cylinder. If anything is found, replace the O-ring. Refer to
c.
Check the air tight condition again. If the condition still cannot be maintained, replace the brake booster.
INSPECTION AFTER REMOVAL
Check Valve Inspection
1.
Check the check valve to use a handy vacuum pump.
Input Rod Length rod Inspection
1.
Check the input length (A).
2.
Replace the brake booster if the input rod length is not the stan-
dard.
INSPECTION AFTER INSTALLATION
Operation
Depress the brake pedal several times at 5-second intervals with the engine stopped. Start the engine with the
brake pedal fully depressed. Check that the clearance between brake pedal and dash lower panel decreases.
NOTE:
A slight impact with a small click may be felt on the pedal when the brake pedal is fully depressed. this is nor-
mal phenomenon due to the brake system operation.
Air Tight
1.
Run the engine at idle for 1 minute to apply vacuum to the brake booster, and stop the engine.
2.
Depress the brake pedal several times at 5-second intervals until the accumulated vacuum is released to
atmospheric pressure. Check that the clearance between brake pedal and dash lower panel gradually
increases each time.
3.
Depress the brake pedal with the engine running. Then stop the engine while holding down the brake
pedal. Check that the brake pedal stroke does not change after holding down the brake pedal for 30 sec-
onds or more.
ADJUSTMENT AFTER INSTALLATION
Perform the brake pedal adjustment after installing the brake assembly. Refer to
.
At vacuum of
−
66.7 kPa (
−
500 mmHg,
−
19.69 inHg,
−
0.067 bar)
: Vacuum should decrease within 3.3 kPa (24.8 mmHg,
0.98 inHg, 0.033 bar) for 15 seconds.
In the case of connecting to brake
booster
: Vacuum should decrease within 3.3 kPa (24.8 mmHg,
0.98 inHg, 0.033 bar) for 15 seconds at vacuum of
−
66.7 kPa (
−
500 mmHg,
−
19.69 inHg,
−
0.067 bar).
In the case of connecting to vacuum
hose
: Vacuum should not exist.
:Input rod
A
: Refer to
JPFIA0238ZZ
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст