Nissan Tiida C11. Instruction — part 53
BRAKE BOOSTER
BR-19
< ON-VEHICLE REPAIR >
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BRAKE BOOSTER
On Board Inspection
INFOID:0000000001716999
OPERATING CHECK
With the engine stopped, change the vacuum to the atmospheric pressure by depressing brake pedal several
times at intervals of 5 seconds.
Then with brake pedal fully depressed, start engine and when the
vacuum pressure reaches the standard, make sure that the clear-
ance between brake pedal and floor panel decreases.
AIRTIGHT CHECK
• Run engine at idle for approximately 1 minute, and stop it after
applying vacuum to booster. Depress brake pedal normally to
change the vacuum to the atmospheric pressure. Make sure that
distance between brake pedal and floor panel gradually increases.
• Depress the brake pedal while engine is running, then stop engine
with brake pedal depressed. The pedal stroke should not change
after holding pedal down for 30 seconds.
Removal and Installation
INFOID:0000000001717000
COMPONENTS
NOTE:
WFIA0520E
WFIA0521E
BR-20
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BRAKE BOOSTER
LHD shown RHD similar.
REMOVAL
CAUTION:
• Be careful not to splash brake fluid on painted areas such as body. It may cause paint damage. If
brake fluid is splashed on painted surfaces of body, wipe them with cloth immediately and then wash
it away with water.
• Be careful not to deform or bend brake tubes while removing and installing brake booster.
• Replace clevis pin if it is damaged.
• Be careful not to damage brake booster stud bolt threads. If brake booster is tilted or inclined during
installation, dash panel may damage the threads.
1.
Remove vacuum hose from brake booster.
2.
Remove master cylinder assembly. Refer to
BR-18, "Removal and Installation"
3.
Remove snap pin and clevis pin on the clevis of the brake
booster, and remove input rod from brake pedal.
4.
Remove brake pedal nuts on pedal bracket.
5.
Remove between spacer and dash panel nut from dash panel.
6.
Remove brake booster and spacer from vehicle.
7.
Remove spacer from brake booster.
INSTALLATION
1.
Reservoir tank
2.
Master cylinder
3.
Brake booster
4.
Clevis
5.
Spacer
6.
Gasket
⇐
:
Up
SFIA3095E
SFIA2044E
BRAKE BOOSTER
BR-21
< ON-VEHICLE REPAIR >
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1.
Loosen lock nut to adjust input rod length so that the length B
satisfies the specified value.
2.
Install spacer to brake booster and tighten spacer nut (brake
booster side) to the specified torque.
3.
After adjusting length “B”, temporarily tighten lock nut to install
brake booster assembly to dash panel. At this time, make sure
to install a gasket between brake booster and vehicle.
CAUTION:
Be sure to install the gasket between brake booster and
vehicle.
4.
Connect brake pedal to clevis of input rod with the clevis pin and snap pin.
5.
Install brake pedal bracket nuts and tighten them to the specified torque.
6.
Adjust the height and play of brake pedal. Refer to
BR-6, "Inspection and Adjustment"
.
7.
Tighten lock nut of input rod to the specified torque. Refer to "COMPONENTS" .
8.
Install vacuum hose into brake booster. Refer to
BR-22, "Removal and Installation"
9.
Bleed air from brake system. Refer to
.
Length “B”
: 154 - 161 mm (6.06 - 6.34 in)
SGIA0060E
BR-22
< ON-VEHICLE REPAIR >
VACUUM LINES
VACUUM LINES
Component
INFOID:0000000001717001
NOTE:
LHD shown RHD similar.
Removal and Installation
INFOID:0000000001717002
CAUTION:
• Because vacuum hose contains a check valve, it must be installed in the correct orientation. Refer to
the stamp or label to confirm correct installation. Brake booster will not operate normally if hose is
installed in the wrong direction.
• Insert vacuum hose at least 24 mm (0.94 in).
• Never use lubricating oil during assembly.
Inspection
INFOID:0000000001717003
VISUAL INSPECTION
Check for improper assembly, damage and aging.
CHECK VALVE INSPECTION
Airtightness Inspection
1.
Clamp
2.
Engine side indicator stamp (built-in
check valve)
3.
Vacuum hose
4.
Clip
5.
Clip position stamp
6.
Vacuum tube
7.
To brake booster
A.
To intake manifold
B.
To brake booster
WFIA0541E
SBR225B
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