Nissan Tiida C11. Manual - 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 

BR-8, "Bleeding Brake System"

 .

Length “B”

: 154 - 161 mm (6.06 - 6.34 in)

SGIA0060E

BR-22

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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