Nissan Murano Z50 (2007 year). Manual - part 36

BRAKE PEDAL

BR-11

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●

After installing the brake pedal assembly to the vehicle, adjust the brake pedal. Refer to 

BR-7, "Inspection

and Adjustment"

 .

BR-12

BRAKE FLUID

Revision: 2006 July

2007 Murano

BRAKE FLUID

PFP:KN100

On-Vehicle Inspection

NFS000DY

LEVEL CHECK

●

Make sure the fluid level in the sub-tank is within the standard
(between MAX and MIN lines).

●

Visually check around the reservoir tank and sub-tank for fluid
leakage.

●

If fluid level is excessively low, check brake system for fluid leak-
age.

●

If brake warning lamp remains illuminated after parking brake
pedal is released, check brake system for fluid leaks.

Drain and Refill

NFS000DZ

CAUTION:

●

Refill with new brake fluid “DOT3”.

●

Do not reuse drained brake fluid.

●

Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is
splashed on painted areas wash it away with water immediately. 

1.

Connect a vinyl tube to bleed valve.

2.

Depress the brake pedal, loosen the bleed valve, and gradually
remove the brake fluid.

3.

Turn ignition switch OFF and disconnect ABS actuator and elec-
tric unit (control unit) connector or battery negative terminal.

4.

Make sure there is no foreign material in the sub-tank, and refill
with new brake fluid.

5.

Rest foot on brake pedal. Loosen bleed valve. Slowly depress
pedal until it stops. Tighten bleed valve. Release brake pedal.
Repeat this process a few times, then pause to add new brake
fluid to sub-tank. Continue until new brake fluid flows out.

6.

Bleed Air. Refer to 

BR-13, "Bleeding Brake System"

 .

SBR451D

BRA0007D

PFIA0437E

BRAKE FLUID

BR-13

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Bleeding Brake System

NFS000E0

CAUTION:

While bleeding, pay attention to sub-tank fluid level.
1.

Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector or battery
negative terminal.

2.

Connect a vinyl tube to the rear right bleed valve. 

3.

Fully depress brake pedal 4 to 5 times.

4.

With brake pedal depressed, loosen bleed valve to let the air out, and then tighten it immediately.

5.

Repeat steps 3, 4 until no more air comes out.

6.

Tighten bleed valve to specified torque. Refer to 

BR-27, "Components"

  (front disc brake), 

BR-33, "Com-

ponents"

  (rear disc brake).

7.

From steps 2 to 6 below, with master cylinder sub-tank filled at least half way, bleed air from the front left,
rear left, and front right tires, in that order.

BR-14

BRAKE TUBE AND HOSE

Revision: 2006 July

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BRAKE TUBE AND HOSE

PFP:46300

Hydraulic Circuit

NFS000E1

CAUTION:

●

All hoses and tubes must be free from excessive bending, twisting and pulling.

●

Make sure there is no interference with other parts when turning steering both clockwise and
counterclockwise.

●

The brake hoses and tubes is an important safety part. If a brake fluid leak is detected, always dis-
assemble the parts. Replace applicable part with a new one, if necessary.

●

Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is
splashed on painted areas, wash it away with water immediately.

●

Do not bend or twist brake hose sharply, or strongly pull it.

●

When removing components, put cover on the connections so that no dirt, no dust, or no other
foreign matter gets in.

●

Refill with new brake fluid “ DOT 3 ”.

●

Do not reuse drained brake fluid.

1.

Front disc brake

2.

ABS actuator and electric unit
(control unit)

3.

Connector

4.

Rear disc brake

5.

Brake booster

6.

Master cylinder

: Brake hose

: Brake tube

: Flare nut 

 16.2 N·m (1.7 kg-m, 12 ft-lb) (Without VDC)

Flare nut 

 18.2 N·m (1.9 kg-m, 13 ft-lb) (With VDC)

: Flare nut 

 16.2 N·m (1.7 kg-m, 12 ft-lb)

: Union bolt 

 18.2 N·m (1.9 kg-m, 13 ft-lb)

: Connector mounting bolt 

 7.0 N·m (0.71 kg-m, 62.0 in-lb)

PFIA0794E

BRAKE TUBE AND HOSE

BR-15

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Removal and Installation of Front Brake Tube and Brake Hose

NFS000E2

REMOVAL

1.

Drain brake fluid. Refer to 

BR-12, "Drain and Refill"

 .

2.

Using a flare nut wrench, remove brake tube from brake hose.

3.

Remove union bolt and remove the brake hose from the brake caliper assembly.

4.

Remove the lock plate and remove the brake hose from the vehicle.

INSTALLATION

1.

Install brake hose by aligning with the protrusion on brake cali-
per assembly, and tighten union bolt to the specified torque.
Refer to 

BR-14, "Hydraulic Circuit"

 .

CAUTION:

Do not reuse the copper washer.

2.

Install brake hose to the brake tube, partially tighten the flare nut
as much as possible by hand, then secure it to the bracket with
lock plate.

3.

Using a flare nut crowfoot and torque wrench, tighten flare nut to
the specified torque. Refer to 

BR-14, "Hydraulic Circuit"

 .

4.

Refill brake fluid and bleed air. Refer to 

BR-13, "Bleeding Brake

System"

 .

Removal and Installation of Rear Brake Tube and Brake Hose

NFS000E3

REMOVAL

1.

Drain brake fluid. Refer to 

BR-12, "Drain and Refill"

 .

2.

Using a flare nut wrench, remove brake tube from brake hose.

3.

Remove union bolts, and then remove brake hose from the brake caliper assembly.

4.

Remove the lock plate and then remove the brake hose from the vehicle.

INSTALLATION

1.

Install brake hose to the brake caliper assembly positioning hole
and tighten union bolt to the specified torque. Refer to 

BR-14,

"Hydraulic Circuit"

 .

CAUTION:

Do not reuse the copper washer.

2.

Install brake hose to the brake tube, partially tighten the flare nut
as much as possible by hand, then secure it to the bracket with
lock plate.

3.

Using a flare nut crowfoot and torque wrench, tighten flare nut to
the specified torque. Refer to 

BR-14, "Hydraulic Circuit"

 .

4.

Refill brake fluid and bleed air. Refer to 

BR-13, "Bleeding Brake

System"

 .

Inspection after Installation

NFS000E4

CAUTION:

If leakage occurs around hose and tube connections, retighten. If necessary, replace damaged part.
1.

Check brake lines (tubes and hoses) and connections for fluid leakage, damage, twist, deformation, con-
tact with other parts, and loose connections. Replace any damage parts.

2.

While depressing brake pedal under a force of 785 N (80 kg, 177 lb) with engine running at idle speed for
approximately 5 seconds, check each part for fluid leakage.

PFIA0404E

PFIA0405E

BR-16

BRAKE MASTER CYLINDER

Revision: 2006 July

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BRAKE MASTER CYLINDER

PFP:46010

On-Vehicle Inspection

NFS000E5

LEAK INSPECTION

Check for fluid leakage from master cylinder attachment portion, reservoir tank, sub-tank, reservoir hose con-
nections, and brake tube connections.

Removal and Installation

NFS000E6

CAUTION:

Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is
splashed on painted areas, wash it away with water immediately.

REMOVAL

1.

Remove cowl top cover. Refer to 

EI-20, "COWL TOP"

 .

2.

Drain brake fluid. Refer to 

BR-12, "Drain and Refill"

 .

3.

Remove air cleaner and air duct. Refer to 

EM-16, "AIR CLEANER AND AIR DUCT"

 .

4.

Disconnect harness connectors for fluid level switch and pressure sensor (with VDC).

5.

Using a flare nut wrench, disconnect master cylinder assembly and brake tube.

6.

Remove master cylinder assembly mounting nut, remove sub-tank assembly mounting bolt and remove
master cylinder assembly from vehicle. Refer to 

BR-23, "Removal and Installation"

 .

INSTALLATION

CAUTION:

●

Refill with new brake fluid “DOT3”.

●

Do not reuse drained brake fluid.

●

Install in the reverse order of removal.

●

Using a flare nut crowfoot and torque wrench, tighten brake tube flare nut to the specified torque. Refer to

BR-14, "Hydraulic Circuit"

 .

●

Refill brake fluid and bleed air. Refer to 

BR-13, "Bleeding Brake System"

 .

BRAKE MASTER CYLINDER

BR-17

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Components

NFS000E7

WITHOUT VDC

1.

Reservoir cap

2.

Oil strainer

3.

Hose and clamp

4.

Clamp

5.

Bracket

6.

Reservoir tank

7.

Grommet

8.

Piston stopper

9.

Cylinder body

10. Pin

11. Secondary piston assembly

12. Primary piston assembly

13. Stopper cap

14. Sub-tank

PFIA0409E

BR-18

BRAKE MASTER CYLINDER

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WITH VDC 

1.

Reservoir cap

2.

Oil strainer

3.

Sub-tank

4.

Bracket

5.

Hose and clamp

6.

Clamp

7.

Reservoir tank

8.

O-ring

9.

Cylinder body

10. Pressure sensor

11. Pin

Refer to 

GI-10, "Components"

  and the followings for the symbols in the figure.

: Apply PBC (Poly Butyl Cuprysil) grease or silicone-based grease.

: Apply brake fluid.

PFIA0865E

BRAKE MASTER CYLINDER

BR-19

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Disassembly and Assembly

NFS000E8

WITHOUT VDC
Disassembly

CAUTION:

Remove the reservoir tank only when absolutely necessary.

1.

Using a flat-bladed screwdriver as shown in the figure, lift up the
tabs on the stopper cap and remove it from the cylinder body.
The piston inside the cylinder body might pop out when this is
done, so hold the stopper cap down at the same time.

2.

Place the side flange of cylinder body with chamfering around
the pin insertion hole facing up, and firmly set cylinder body in a
vise.

CAUTION:

●

When setting the cylinder body with the vise, be sure not
to over-tighten.

●

When setting securing with a vise, use copper plates or
cloth to protect the flange.

3.

Using a pin punch [commercial service tool: diameter approx. 4
mm (0.16 in)], remove mounting pin on the reservoir tank.

4.

Remove cylinder body from vise.

5.

Remove reservoir tank and grommet from cylinder body.

6.

Using a flat-bladed screwdriver, push in the piston and remove
piston stopper from cylinder body.

7.

Carefully pull the primary piston assembly straight out to prevent
cylinder inner wall from being damaged.

BRA0031D

PFIA0438E

PFIA0439E

PFIA0440E

BR-20

BRAKE MASTER CYLINDER

Revision: 2006 July

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8.

Tap flange using a soft block such as wood, and carefully pull
the secondary piston assembly straight out to prevent cylinder
inner wall from being damaged.

Inspection after Disassembly

Cylinder body
Check the inner wall of the cylinder for damage, abrasion, corrosion and pin holes. Replace the cylinder body
if any non-standard condition is detected.

Assembly

CAUTION:

●

Never use mineral oils such as kerosene, gasoline during the cleaning and assembly process.

●

Make sure there is no foreign matter such as dirt or dust attached to the inner cylinder walls, the
piston, or the cap seal, and take care to avoid damaging parts with the assembly tools.

●

Do not drop parts. If a part is dropped, do not use it.

1.

Apply brake fluid to cylinder inner wall body and contact surface
of the piston assembly. Then insert secondary piston assembly
and primary piston assembly into cylinder body in this order.

CAUTION:

●

Do not reuse primary and secondary piston assemblies.

●

Be sure to replace the assembly without disassembling
the new inner kit.

●

Pay attention to the orientation of the piston cup, and
insert straight to prevent the cup from being caught by
cylinder inner wall.

2.

Visually check the secondary piston slit through the tank boss
hole on the secondary side of the cylinder body, and insert the
piston stopper.

CAUTION:

Do not reuse piston stopper.

3.

Holding down the primary piston with the stopper cap, push the
stopper cap claws so they are firmly into the cylinder grooves,
then install the stopper cap.

CAUTION:

Do not reuse the stopper cap.

4.

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

CAUTION:

Do not reuse the grommet.

5.

Cylinder body is fixed in the vise as described in “disassembly:
step 2”. 

BRA0033D

SBR089C

PFIA0440E

BRA0035D

BRAKE MASTER CYLINDER

BR-21

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6.

Using a pin punch [commercial service tool: diameter approx. 4
mm (0.16 in)], insert the reservoir tank mounting pin into the pin
hole so that the attachment side and the opposite side are iden-
tical.

CAUTION:

Do not reuse the reservoir tank mounting pin.

WITH VDC
Disassembly

CAUTION:

●

Cylinder body can not be disassembled.

●

Remove the reservoir tank only when absolutely necessary.

1.

Remove reservoir tank mounting pin (1).

2.

Remove reservoir tank and O-ring from cylinder body (2).

Assembly

CAUTION:

●

Do not use mineral oils such as kerosene, gasoline during the cleaning and assembly process.

●

Do not drop parts. If a part is dropped, do not use it.

1.

Apply brake fluid the O-ring and attach to the cylinder body.

CAUTION:

Do not reuse the O-ring.

2.

Install reservoir tank onto the cylinder body (2).

3.

Insert the reservoir tank mounting pin (1).

CAUTION:

Do not reuse the reservoir tank mounting pin.

PFIA0439E

PFIA0866E

PFIA0866E

BR-22

BRAKE BOOSTER

Revision: 2006 July

2007 Murano

BRAKE BOOSTER

PFP:47200

On-Vehicle Inspection

NFS000E9

OPERATING CHECK

With the engine stopped, change the vacuum to the atmospheric
pressure by depressing the brake pedal several times. Then with
brake pedal fully depressed, start the engine and when the vacuum
pressure reaches the standard, make sure the clearance between
the brake pedal and floor panel decreases.

CAUTION:

Depressing brake pedal interval is approximately 5 seconds.

AIRTIGHT CHECK

●

Start engine, and stop if after 1 minute. Depress brake pedal
several times slowly. The pedal should go further down the first
tie, and then it should gradually rise thereafter.

●

Depress brake pedal while engine is running, and stop engine
with brake pedal depressed. The brake pedal stroke should not
change after holding pedal down for 30 seconds.

CAUTION:

Depressing brake pedal interval is approximately 5 seconds.

BRA0037D

SBR365AA

BRAKE BOOSTER

BR-23

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Components

NFS000HV

Removal and Installation

NFS000EA

REMOVAL 

CAUTION:

●

Be careful not to deform or bend brake tubes while removing and installing the 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 dur-
ing installation, the dash panel may damage the threads.

●

Attach the check valve in the correct orientation.

1.

Remove brake master cylinder assembly. Refer to 

BR-17, "Components"

 .

2.

Remove cowl top cover. Refer to 

EI-20, "COWL TOP"

 .

3.

Remove vacuum hose from the brake booster. Refer to 

BR-25, "Components"

 .

4.

Remove the brake pedal snap pin and clevis pin from inside the vehicle. Refer to 

BR-10, "Removal and

Installation"

 .

5.

Remove brake tube bracket from dash panel.

6.

Remove mounting nuts from the brake booster and brake pedal assembly.

7.

Remove brake booster from the dash panel.

1.

Master cylinder assembly

2.

Reservoir tank

3.

Brake booster

4.

Gasket

5.

Lock nut

PFIA0441E

BR-24

BRAKE BOOSTER

Revision: 2006 July

2007 Murano

INSPECTION AFTER REMOVAL
Output Rod Length Inspection

1.

Using a handy vacuum pump, apply a vacuum of 

−

66.7 kPa (

−

500 mmHg, 

−

19.69 inHg) to the brake booster.

2.

Check output rod length.

INSTALLATION

1.

Loosen the lock nut to adjust the input rod length so that the
length “B” (in the figure) satisfies the specified value.

2.

After adjusting “B”, temporarily tighten the lock nut to install the
brake booster to the vehicle. At this time, securely install a gas-
ket between the brake booster and the dash panel.

3.

Connect the brake pedal with the clevis of the input rod.

4.

Install the brake booster and brake pedal assembly mounting
nuts and tighten them to the specified torque. Refer to 

BR-23,

"Components"

 .

5.

Install brake tube bracket to dash panel.

6.

Install vacuum hose to brake booster. Refer to 

BR-25, "VACUUM LINES"

 .

7.

Install the master cylinder to the brake booster. Refer to 

BR-16, "Removal and Installation"

 .

8.

Adjust the height and play of the brake pedal. Refer to 

BR-7, "ADJUSTMENT"

 .

9.

Tighten the lock nut of the input rod to the specified torque. Refer to 

BR-23, "Components"

 .

10. Install cowl top cover. Refer to 

EI-20, "COWL TOP"

 .

11. Refill new brake fluid and bleed air. Refer to 

BR-13, "Bleeding Brake System"

 .

Standard dimension when applying a vacuum of 

−

66.7 

kPa (

−

500 mmHg, 

−

19.69 inHg):

Without VDC

: 10.4 mm (0.409 in)

With VDC

: 

−

15.7 mm (

−

0.618 in)

SBR208E

Length “B”

: 125 mm (4.92 in)

SGIA0060E

VACUUM LINES

BR-25

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VACUUM LINES

PFP:41920

Components

NFS000HW

Removal and Installation

NFS000EB

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. The brake booster will not operate normally if
the hose is installed in the wrong direction.

●

Insert the vacuum hose for at least 24 mm (0.94 in).

●

Do not use lubricating oil during assembly.

Inspection

NFS000EC

VISUAL INSPECTION

Check vacuum hose and connections for air tightness, improper attachment, chafing and deterioration. Repair
or replace as necessary.

1.

Clamp

2.

Vacuum hose (built-in check valve)

3.

Check valve inclusion position stamp

4.

Vacuum tube

5.

Vacuum hose

6.

To brake booster

7.

To intake manifold

SFIA2898E

SBR225B

BR-26

VACUUM LINES

Revision: 2006 July

2007 Murano

CHECK VALVE INSPECTION
Airtightness Inspection

Check vacuum with a handy vacuum pump.

Connected to booster side (1):

 Vacuum decrease should be within 1.3 kPa (10 
mmHg, 0.39 inHg) for 15 seconds under a vacuum 
of 

−

66.7 kPa (

−

500 mmHg, 

−

19.69 inHg)

Connected to engine side (2):

 Vacuum should not exist.

SFIA0210E