Nissan Juke (2014 year). Service Repair Manual - part 24

BR-24

< REMOVAL AND INSTALLATION >

BRAKE PIPING

3.

Install the brake tube (2) to the brake hose (1), temporarily
tighten the flare nut (3) by hand until it does not rotate further,
and fix the brake hose to the bracket (5) with the lock plate (4).

CAUTION:

Check that all brake hoses and brake tubes are not twisted
and bent.

4.

Tighten the flare nut to the specified torque with a crowfoot (A)
and torque wrench (B).

CAUTION:

Never scratch the flare nut and the brake tube.

5.

Refill with new brake fluid and perform the air bleeding. Refer to

BR-11, "Bleeding Brake System"

.

CAUTION:

Never reuse drained brake fluid.

6.

Install tires. Refer to 

WT-46, "Removal and Installation"

.

7.

Perform inspection after installation. Refer to 

BR-24, "FRONT :

Inspection"

.

FRONT : Inspection

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INSPECTION AFTER INSTALLATION

1.

Check the brake hoses and tubes for the following: no scratches; no twist and deformation; no interfer-
ence with other components when steering the steering wheel; no looseness at connections.

2.

Depress the brake pedal with a force of 785 N (80 kg, 176 lb) and hold down the pedal for approximately
5 seconds with the engine running. Check for any fluid leakage.

CAUTION:

Retighten the applicable connection to the specified torque and repair any abnormal (damaged,
worn or deformed) part if any brake fluid leakage is present.

REAR

REAR : Exploded View

INFOID:0000000009752292

2WD

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BRAKE PIPING

BR-25

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AWD

1.

Brake tube

2.

Brake hose A

3.

Lock plate

4.

Brake hose bracket

5.

Union bolt

6.

Brake hose B

7.

Copper washer

A.

To connector

: N·m (kg-m, ft-lb)

: N·m (kg-m, in-lb)

: Always replace after every disassembly.

: Indicates that the part is connected at points with same symbol in actual vehicle.

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BR-26

< REMOVAL AND INSTALLATION >

BRAKE PIPING

REAR : Hydraulic Piping

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2WD

1.

Brake tube

2.

Brake hose A

3.

Lock plate

4.

Brake hose bracket

5.

Brake hose B

6.

Union bolt

7.

Copper washer

A.

To connector

: N·m (kg-m, ft-lb)

: N·m (kg-m, in-lb)

: Always replace after every disassembly.

: Indicates that the part is connected at points with same symbol in actual vehicle.

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BRAKE PIPING

BR-27

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AWD

REAR : Removal and Installation

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REMOVAL

1.

ABS actuator and electric unit (con-
trol unit)

2.

Front disc brake

3.

Master cylinder assembly

4.

Brake booster

5.

Connector

6.

Rear disc brake

A.

Brake tube

B.

Brake hose

: Flare nut

: Union bolt

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1.

ABS actuator and electric unit (con-
trol unit)

2.

Front disc brake

3.

Master cylinder assembly

4.

Brake booster

5.

Connector

6.

Rear disc brake

A.

Brake tube

B.

Brake hose

: Flare nut

: Union bolt

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BR-28

< REMOVAL AND INSTALLATION >

BRAKE PIPING

2WD

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.

• Never depress the brake pedal while removing the brake hose or brake tube. If this is not complied

with, brake fluid may splash.

1.

Remove tires with power tool.

2.

Drain brake fluid. Refer to 

BR-10, "Draining"

.

3.

Loosen the flare nut (1) with a flare nut wrench (A) and separate
the brake tube (2) from the brake hose A (3).

CAUTION:

• Never scratch the flare nut and the brake tube.
• Never bend sharply, twist or strongly pull out the brake

hoses and tubes.

• Cover open end of brake tubes and hoses when discon-

necting to prevent entrance of dirt.

4.

Remove the lock plate (4) and remove the brake hose A.

5.

Loosen the flare nut (1) with a flare nut wrench (A) and separate
the brake tube (2) from the hose B (3).

CAUTION:

• Never scratch the flare nut and the brake tube.
• Never bend sharply, twist or strongly pull out the brake

hoses and tubes.

• Cover open end of brake tubes and hoses when discon-

necting to prevent entrance of dirt.

6.

Remove the lock plate (4) from brake hose bracket (5).

7.

Remove the union bolt (1) and copper washers (2), and remove
the brake hose B (3) from the brake caliper assembly.

AWD

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.

• Never depress the brake pedal while removing the brake hose or brake tube. If this is not complied

with, brake fluid may splash.

1.

Remove tires with power tool.

2.

Drain brake fluid. Refer to 

BR-10, "Draining"

.

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BRAKE PIPING

BR-29

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3.

Loosen the flare nut (1) with a flare nut wrench (A) and separate
the brake tube (2) from the hose A (3).

CAUTION:

• Never scratch the flare nut and the brake tube.
• Never bend sharply, twist or strongly pull out the brake

hoses and tubes.

• Cover open end of brake tubes and hoses when discon-

necting to prevent entrance of dirt.

4.

Remove the lock plate (4) and remove the brake hose A.

5.

Loosen the flare nut (1) with a flare nut wrench (A) and separate
the brake tube (2) from the hose B (3).

CAUTION:

• Never scratch the flare nut and the brake tube.
• Never bend sharply, twist or strongly pull out the brake

hoses and tubes.

• Cover open end of brake tubes and hoses when discon-

necting to prevent entrance of dirt.

6.

Remove the lock plate (4) from brake hose bracket (5).

7.

Remove the union bolt (1) and copper washers (2), and remove
the brake hose B (3) from the brake caliper assembly.

INSTALLATION

2WD

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.

• Never depress the brake pedal while removing the brake hose or brake tube. If this is not complied

with, brake fluid may splash.

1.

Assemble the union bolt (1) and the copper washer (2) to the
brake hose B (3).

CAUTION:

Never reuse the copper washer.

2.

Align the brake hose B L-pin (A) with the brake caliper assembly
hole (B), and tighten the union bolt (1) to the specified torque.

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BR-30

< REMOVAL AND INSTALLATION >

BRAKE PIPING

3.

Install the brake tube (2) to the brake hose B (1), temporarily
tighten the flare nut (3) by hand until it does not rotate further,
and fix the brake hose B to the brake hose bracket (5) with the
lock plate (4).

CAUTION:

Check that all brake hoses and brake tubes are not twisted
and bent.

4.

Tighten the flare nut to the specified torque with a crowfoot (A)
and torque wrench (B).

CAUTION:

Never scratch the flare nut and the brake tube.

5.

Install the brake tube (2) to the brake hose A (1), temporarily
tighten the flare nut (3) by hand until it does not rotate further,
and fix the brake hose with the lock plate (4).

CAUTION:

Check that all brake hoses and brake tubes are not twisted
and bent.

6.

Tighten the flare nut to the specified torque with a crowfoot (A)
and torque wrench (B).

CAUTION:

Never scratch the flare nut and the brake tube.

7.

Refill with new brake fluid and perform the air bleeding. Refer to

BR-11, "Bleeding Brake System"

.

CAUTION:

Never reuse drained brake fluid.

8.

Install tires. Refer to 

WT-46, "Removal and Installation"

.

9.

Perform inspection after installation. Refer to 

BR-32, "REAR :

Inspection"

.

AWD

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.

• Never depress the brake pedal while removing the brake hose or brake tube. If this is not complied

with, brake fluid may splash.

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BRAKE PIPING

BR-31

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1.

Assemble the union bolt (1) and the copper washer (2) to the
brake hose B (3).

CAUTION:

Never reuse the copper washer.

2.

Align the brake hose B L-pin (A) with the brake caliper assembly
hole (B), and tighten the union bolt (1) to the specified torque.

3.

Install the brake tube (2) to the brake hose B (1), temporarily
tighten the flare nut (3) by hand until it does not rotate further,
and fix the brake hose B to the brake hose bracket (5) with the
lock plate (4).

CAUTION:

Check that all brake hoses and brake tubes are not twisted
and bent.

4.

Tighten the flare nut to the specified torque with a crowfoot (A)
and torque wrench (B).

CAUTION:

Never scratch the flare nut and the brake tube.

5.

Install the brake tube (2) to the brake hose A (3), temporarily
tighten the flare nut (1) by hand until it does not rotate further,
and fix the brake hose A to the bracket with the lock plate (4).

CAUTION:

Check that all brake hoses and brake tubes are not twisted
and bent.

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BR-32

< REMOVAL AND INSTALLATION >

BRAKE PIPING

6.

Tighten the flare nut to the specified torque with a crowfoot (A)
and torque wrench (B).

CAUTION:

Never scratch the flare nut and the brake tube.

7.

Refill with new brake fluid and perform the air bleeding. Refer to

BR-11, "Bleeding Brake System"

.

CAUTION:

Never reuse drained brake fluid.

8.

Install tires. Refer to 

WT-46, "Removal and Installation"

.

9.

Perform inspection after installation. Refer to 

BR-32, "REAR :

Inspection"

.

REAR : Inspection

INFOID:0000000009752295

INSPECTION AFTER INSTALLATION

1.

Check the brake hoses and tubes for the following: no scratches; no twist and deformation; no looseness
at connections.

2.

Depress the brake pedal with a force of 785 N (80kg, 176 lb) and hold down the pedal for approximately 5
seconds with the engine running. Check for any fluid leakage.

CAUTION:

Retighten the applicable connection to the specified torque and repair any abnormal (damaged,
worn or deformed) part if any brake fluid leakage is present.

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BRAKE MASTER CYLINDER

BR-33

< REMOVAL AND INSTALLATION >

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BRAKE MASTER CYLINDER

Exploded View

INFOID:0000000009752296

Removal and Installation

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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.

• Never depress the brake pedal while removing the brake tube. If this is not complied with, brake fluid

may splash.

1.

Perform inspection before removal. Refer to 

BR-36, "Inspection"

.

2.

Depress the brake pedal several times to release the vacuum pressure from the brake booster.

3.

Drain brake fluid. Refer to 

BR-10, "Draining"

.

4.

Disconnect the brake fluid level switch harness connector.

5.

Remove air duct and air cleaner case. Refer to 

EM-25, "Removal and Installation"

.

1.

Reservoir cap

2.

Oil strainer

3.

Reservoir tank

4.

Cylinder body

5.

Pin

6.

O-ring

7.

Grommet

: Apply polyglycol ether based lubricant.

: Apply brake fluid.

: N·m (kg-m, ft-lb)

: Always replace after every disassembly.

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BR-34

< REMOVAL AND INSTALLATION >

BRAKE MASTER CYLINDER

6.

Separate the brake tube from master cylinder assembly with a
flare nut wrench (A).

CAUTION:

Never scratch the flare nut and the brake tube.

7.

Remove the master cylinder assembly.

CAUTION:

• Never deform or bend the brake tubes.
• Never depress the brake pedal after the master cylinder

assembly is removed.

• The piston (A) of the master cylinder assembly is

exposed. Never damage it when removing the master cyl-
inder.

• The piston may drop off when pulled out strongly. Never

hold the piston. Hold the cylinder body when handling the
master cylinder assembly.

8.

Remove the O-ring.

INSTALLATION

Note the following, and install in the reverse order of removal.
• 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.

• Never depress the brake pedal while removing the brake tube. If this is not complied with, brake fluid may

splash.

• Never depress the brake pedal after the master cylinder assembly is removed.
• Apply polyglycol ether based lubricant to the brake booster [see

(A) in the figure] when installing the master cylinder assembly to
the brake booster.

• The piston (A) of the master cylinder assembly is exposed. Never

damage it when handling the master cylinder.

• Check that no dirt and dust are present on the piston before instal-

lation. Clean it with new brake fluid if necessary.

• The piston may drop off when pulled strongly. Never hold the pis-

ton. Hold the cylinder body when handling the master cylinder
assembly.

• Never reuse the O-ring.
• Never deform or bend the brake tubes.

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BRAKE MASTER CYLINDER

BR-35

< REMOVAL AND INSTALLATION >

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• Temporarily tighten the brake tube flare nut to the master cylinder

assembly by hand. Then tighten it to the specified torque with a
crowfoot and torque wrench (A). Refer to 

BR-21, "FRONT :

Exploded View"

.

• Perform the air bleeding. Refer to 

BR-11, "Bleeding Brake System"

• Perform inspection after installation. Refer to 

BR-36, "Inspection"

.

Disassembly and Assembly

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DISASSEMBLY

CAUTION:

• Never disassemble the cylinder body.
• Remove the reservoir tank only when necessary.

1.

Fix the master cylinder assembly to a vise.

CAUTION:

• Always set copper plates or cloth between vise grips when fixing the cylinder body to a vise.
• Never overtighten the vise.

2.

Remove the reservoir tank mounting pin with a pin punch (A) [4
mm (0.157 in)].

3.

Remove the reservoir tank and grommet from the cylinder body.

ASSEMBLY

CAUTION:

• Never use mineral oils such as kerosene or gasoline and rubber grease during the cleaning and

assembly process.

• Never allow foreign matter (e.g. dust) and oils other than brake fluid to enter the reservoir tank.
• Never drop the when installing. The parts must not be reused if they are dropped.

1.

Apply new brake fluid to the grommet and install it to the cylinder body.

CAUTION:

Never reuse the grommets.

2.

Install the reservoir tank to the cylinder body.

3.

Fix the cylinder body to a vise.

CAUTION:

• Place the reservoir tank with the chamfered pin hole (

)

facing up.

• Always set copper plates or cloth between vise grips

when fixing the cylinder body to a vise.

• Never overtighten the vise.

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BR-36

< REMOVAL AND INSTALLATION >

BRAKE MASTER CYLINDER

4.

Tilt the reservoir tank so that a mounting pin can be inserted. Insert a mounting pin. Return the reservoir
tank to the horizontal position. Insert another mounting pin into the pin hole on the opposite side in the
same manner after the mounting pin passes through the cylinder body pin hole.

CAUTION:

Never reuse the mounting pin.

Inspection

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INSPECTION BEFORE REMOVAL

Check the brake fluid level switch. Refer to 

BRC-103, "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 

BR-24, "FRONT : Inspection"

.

CAUTION:

If the fluid leakage is present, retighten to the specified torque. Replace if necessary.

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BRAKE BOOSTER

BR-37

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BRAKE BOOSTER

Exploded View

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Removal and installation

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REMOVAL

1.

Perform inspection before removal. Refer to 

BR-38, "Inspection and Adjustment"

.

2.

Remove cowl top and cowl top extension. Refer to 

EXT-26, "Removal and Installation"

.

3.

Remove air duct and air cleaner case. Refer to 

EM-25, "Removal and Installation"

.

4.

Remove brake master cylinder assembly. Refer to 

BR-33, "Removal and Installation"

.

5.

Remove vacuum hose from brake booster. Refer to 

BR-40, "Removal and Installation"

.

6.

Remove snap pin (1) and clevis pin (2). Refer to 

BR-18,

"Exploded View"

.

7.

Remove nuts on brake booster and brake pedal assembly.

CAUTION:

Hold the brake booster so as to avoid dropping out.

8.

Remove brake booster and spacer.

CAUTION:

Never deform or bend the brake tubes.
NOTE:
If removing brake booster is difficult, remove clevis from brake
booster.

9.

Remove spacer from brake booster.

10. Perform inspection after removal. Refer to 

BR-38, "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.
Note the following, and install in the reverse order of removal.
• Be careful not to damage brake booster stud bolt threads. If brake booster is tilted during installation, the

dash panel may damage the threads.

1.

Master cylinder assembly

2.

Brake booster

3.

Lock nut

4.

Clevis

5.

Gasket

6.

Spacer

: N·m (kg-m, ft-lb)

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BR-38

< REMOVAL AND INSTALLATION >

BRAKE BOOSTER

• Never deform or bend the brake tubes when installing the brake booster.
• Always use a gasket between the brake booster and the spacer.
• Replace the clevis pin if it is damaged. Refer to 

BR-19, "Inspection and Adjustment"

.

• Perform the air bleeding. Refer to 

BR-11, "Bleeding Brake System"

.

• Check each item of brake pedal. Adjust it if the measurement value is not the standard. Refer to 

BR-7,

"Inspection and Adjustment"

.

Inspection and Adjustment

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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.

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 

BR-33,

"Removal and Installation"

.

c.

Check the air tight condition again. If the condition still cannot be maintained, replace the brake booster.

INSPECTION AFTER REMOVAL

Input Rod Length Inspection

1.

Loosen the lock nut (1) and adjust the input rod (2) to the speci-
fied length (A).

2.

Tighten the lock nut to the specified torque.

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 a
normal 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 the brake pedal is depressed when performing this operation.

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

At vacuum of 

−

66.7 kPa (

−

500 mmHg, 

−

19.69 inHg)

: Vacuum should decrease within 3.3 kPa (24.8 mmHg, 
0.98 inHg) for 15 seconds.

A

: Refer to 

BR-58, "Brake Booster"

.

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BRAKE BOOSTER

BR-39

< REMOVAL AND INSTALLATION >

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Perform the brake pedal adjustment after installing the brake pedal assembly. Refer to 

BR-7, "Inspection and

Adjustment"

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Revision: 2013 October

2014 JUKE