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Nissan Murano Z50 (2004 year). Manual - part 38

BRAKE PEDAL

BR-9

Revision: 2004 November

2004 Murano

COMPONENT PARTS LOCATION (ADJUSTABLE PEDAL)

REMOVAL

CAUTION:

●

Adjust mechanism (Drive wire, Drive motor) is not able to disassembly.

●

Before pedal drive cable removal, Pedals must be in the front must position. Because of keeping
the proper position between accelerator and brake pedal.

Remove front kick plate (driver side). Refer to

EI-32, "BODY SIDE TRIM"

Remove front body side welt (driver side). Refer to

EI-32, "BODY SIDE TRIM"

Remove instrument driver lower panel. Refer to

IP-10, "INSTRUMENT PANEL ASSEMBLY"

Remove dash side finisher (driver side). Refer to

EI-32, "BODY SIDE TRIM"

Remove parking pedal assembly. Refer to

PB-3, "Removal and Installation"

Disconnect accelerator pedal drive cable, drive motor harness connector. (With adjustable pedal)

Remove stop lamp switch and ASCD cancel switch from the pedal assembly.

Brake pedal assembly

Snap pin

Clip

Stop lamp switch

Pedal pad

Clevis pin

ASCD cancel switch

PFIA0402E

BR-10

BRAKE PEDAL

Revision: 2004 November

2004 Murano

Remove snap pin and clevis pin from input rod clevis.

Remove mounting nuts from pedal bracket, and remove pedal
assembly from vehicle.

INSPECTION AFTER REMOVAL

●

Check the clevis pin and resin stopper for damage and deforma-
tion. If a failure is detected, replace the clevis pin and resin stop-
per.

INSTALLATION

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

●

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

BR-6, "Inspection

and Adjustment"

PFIA0435E

SBR997

BRAKE FLUID

BR-11

Revision: 2004 November

2004 Murano

BRAKE FLUID

PFP:KN100

On-Board Inspection

AFS0016U

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 lever is
released, check brake system for fluid leaks.

Drain and Refill

AFS0016V

CAUTION:

●

Refill with new brake fluid “DOT3”.

●

Never 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.

Connect a vinyl tube to air bleeder valve.

Depress the brake pedal, loosen the air bleeder valve, and grad-
ually remove the brake fluid.

Turn ignition switch off position and disconnect ABS actuator
and electric unit (control unit) connector or battery negative
cable.

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

Rest foot on brake pedal. Loosen air bleeder valve. Slowly
depress pedal until it stops. Tighten air bleeder valve. Release
brake pedal. Repeat this process a few times, then pause to add
new brake fluid to master cylinder. Continue until new brake fluid
flows out.

Bleed Air. Refer to

BR-12, "Bleeding Brake System"

SBR451D

BRA0007D

PFIA0437E

BR-12

BRAKE FLUID

Revision: 2004 November

2004 Murano

Bleeding Brake System

AFS0016W

CAUTION:

While bleeding, pay attention to master cylinder fluid level.
1.

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

Connect a vinyl tube to the rear right air bleeder valve.

Fully depress brake pedal 4 to 5 times.

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

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

Tighten air bleeder valve to specified torque.

In 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.

BRAKE PIPING AND HOSE

BR-13

Revision: 2004 November

2004 Murano

BRAKE PIPING AND HOSE

PFP:46210

Hydraulic Circuit

AFS0016X

CAUTION:

●

All hoses and pipings (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 piping is an important safety part. If a brake fluid leak is detected, always disassemble
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.

Removal and Installation of Front Brake Piping and Brake Hose

AFS0016Y

REMOVAL

Drain brake fluid. Refer to

BR-11, "Drain and Refill"

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

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

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

PFIA0403E

BR-14

BRAKE PIPING AND HOSE

Revision: 2004 November

2004 Murano

INSTALLATION

Install brake hose by aligning with the protrusion on caliper
assembly, and tighten union bolt to the specified torque.

NOTE:
Do not reuse the copper washer.

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

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

Refill brake fluid and bleed air. Refer to

BR-11, "Drain and Refill"

Removal and Installation of Rear Brake Piping and Brake Hose

AFS00170

REMOVAL

Drain brake fluid. Refer to

BR-11, "Drain and Refill"

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

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

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

INSTALLATION

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

NOTE:
Do not reuse the copper washer.

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

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

Refill brake fluid and bleed air. Refer to

BR-12, "Bleeding Brake System"

Inspection After Installation

AFS00172

CAUTION:

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

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.

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.

: 16.7 - 19.6 N·m (1.7 - 1.9 kg-m, 13 - 14 ft-lb)

: 14.8 - 17.6 N·m (1.5 - 1.7 kg-m, 11 - 12 ft-lb)

PFIA0404E

: 16.7 - 19.6 N·m (1.7 - 1.9 kg-m, 13 - 14 ft-lb)

PFIA0405E

BRAKE MASTER CYLINDER

BR-15

Revision: 2004 November

2004 Murano

BRAKE MASTER CYLINDER

PFP:46010

On Board Inspection

AFS00173

LEAK INSPECTION

●

Check for fluid leakage from master cylinder attachment portion, reservoir tank, reservoir hose connec-
tions, and brake tube connections.

Removal and Installation

AFS00174

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

Drain brake fluid. Refer to

BR-11, "Drain and Refill"

Remove air cleaner and air duct. Refer to

EM-14, "AIR CLEANER AND AIR DUCT"

Disconnect harness connectors for fluid level sensor and pressure sensor (VDC model only).

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

Remove master cylinder assembly nut, remove sub tank assembly 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.

●

Refill brake fluid and bleed air. Refer to

BR-12, "Bleeding Brake System"

BR-16

BRAKE MASTER CYLINDER

Revision: 2004 November

2004 Murano

Components

AFS00175

WITH VDC MODELS

Reservoir cap

Oil strainer

Hose and clamp

Clamp

Bracket

Reservoir tank

Grommet

Master cylinder assembly

Clip

10. Pressure sensor

11. Sub tank

PFIA0408E

BRAKE MASTER CYLINDER

BR-17

Revision: 2004 November

2004 Murano

WITHOUT VDC MODELS

Reservoir cap

Oil strainer

Hose and clamp

Clamp

Bracket

Reservoir tank

Grommet

Piston stopper

Cylinder body

10. Pin

11. Secondary piston assembly

12. Primary piston assembly

13. Stopper cap

14. Sub tank

PFIA0409E

BR-18

BRAKE MASTER CYLINDER

Revision: 2004 November

2004 Murano

Disassembly and Assembly

AFS00176

WITHOUT VDC MODELS
Disassembly

CAUTION:

Remove the reservoir tank only when absolutely necessary.

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

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

CAUTION:

●

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

●

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

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

Remove master cylinder assembly from vise.

Remove reservoir tank and grommet from cylinder body.

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

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

BRA0031D

PFIA0438E

PFIA0439E

PFIA0440E

BRAKE MASTER CYLINDER

BR-19

Revision: 2004 November

2004 Murano

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

Master cylinder

●

Check the inner wall of the cylinder for damage, abrasion, corrosion and pin holes.
If defective, replace the master cylinder.

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.

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.

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

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.

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

CAUTION:

Do not reuse the grommet.

Master cylinder assembly is fixed in the vise as described in
“disassembly: step 2”.

BRA0033D

SBR089C

PFIA0440E

BRA0035D

BR-20

BRAKE MASTER CYLINDER

Revision: 2004 November

2004 Murano

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 reservoir tank grommet and mounting pin.

PFIA0439E

BRAKE MASTER CYLINDER

BR-21

Revision: 2004 November

2004 Murano

WITH VDC MODELS
Disassembly

CAUTION:

●

Master cylinder cannot be disassembled.

●

Remove the reservoir tank only when absolutely necessary.

Remove clip.

Remove reservoir tank and grommet from cylinder body.

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.

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

CAUTION:

Do not reuse the grommet.

Install reservoir tank onto the cylinder body.

Insert the clip.

PFIA0424E

BR-22

BRAKE BOOSTER

Revision: 2004 November

2004 Murano

BRAKE BOOSTER

PFP:47200

On-Vehicle Service

AFS00177

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 pedal interval is approximately 5 seconds.

AIRTIGHT CHECK

●

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

●

Depress brake pedal while engine is running, and stop
engine with pedal depressed. The 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

Revision: 2004 November

2004 Murano

Removal and Installation

AFS00178

Master cylinder

Reservoir tank

Brake booster

Gasket

Lock nut

PFIA0441E

BR-24

BRAKE BOOSTER

Revision: 2004 November

2004 Murano

REMOVAL

CAUTION:

●

Be careful not to deform or bend brake piping 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.

Remove brake master cylinder. Refer to

BR-15, "BRAKE MASTER CYLINDER"

Remove cowl top cover. Refer to

EI-21, "COWL TOP"

Remove vacuum hose from the brake booster. Refer to

BR-25, "VACUUM LINES"

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

Remove brake tube bracket from dash panel.

Remove nuts from the brake booster and brake pedal assembly.

Remove brake booster assembly from the dash panel.

INSPECTION AFTER REMOVAL
Output Rod Length Inspection

Using a handy vacuum pump, apply a vacuum of – 66.7 kPa (–
500 mmHg,19.69 inHg) to the brake booster.

Check output rod length.

INSTALLATION

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

After adjusting “B”, temporarily tighten the lock nut to install the
booster assembly to the vehicle. At this time, make sure to
install a gasket between the booster assembly and the dash
panel.

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

Install the pedal bracket mounting nuts and tighten them to the
specified torque.

Install the master cylinder to the booster assembly. Refer to

BR-15, "Removal and Installation"

Adjust the height and play of the brake pedal.

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

Install vacuum hose to brake booster. Refer to

BR-25, "VACUUM LINES"

Install brake tube bracket to dash panel.

10. Install cowl top cover. Refer to

EI-21, "COWL TOP"

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