INFINITI FX35 2007 Service Manual

BRAKE PEDAL BR-7
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Revision: 2006 July 2007 FX35/FX45
ComponentsNFS000OA
Removal and InstallationNFS000LT
REMOVAL
1. Remove front kicking plate (driver side). Refer to EI-40, "KICKING PLATE" .
2. Remove dash side finisher (driver side). Refer to EI-39, "
DASH SIDE FINISHER" .
3. Remove instrument lower panel (driver side). Refer to IP-10, "
INSTRUMENT PANEL ASSEMBLY" .
4. Remove steering column assembly. Refer to PS-13, "
Removal and Installation" .
5. Remove stop lamp switch and ASCD cancel switch (or brake switch) from pedal assembly.
6. Remove snap pin and clevis pin from brake booster clevis.
7. Remove mounting nuts and bolt from bracket, and remove brake pedal assembly from vehicle.
1. Clevis pin 2. Snap pin 3. Brake pedal assembly
4. Stopper rubber 5. Pedal pad 6. ASCD cancel switch (Models with ASCD)
Brake switch (Models with ICC)
7. Stop lamp switch 8. Clip
SFIA1940E
SFIA0159E

BR-8
BRAKE PEDAL
Revision: 2006 July 2007 FX35/FX45
INSPECTION AFTER REMOVAL

Make sure the rivets in the upper part of brake pedal are not
deformed.

Make sure that joint length “L” of sub-bracket and sliding plate is
5.5 mm (0.217 in) or more.

Replace brake pedal assembly if any non-standard condition is
detected.

Check clevis pin and plastic stopper for damage and deforma-
tion. Replace clevis pin if there are.
INSTALLATION
Installation in the reverse order of removal.

After installing brake pedal assembly to the vehicle, adjust brake pedal height. Refer to BR-6, "Inspection
and Adjustment" .
SFIA2487E
SBR997

BRAKE FLUID BR-9
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Revision: 2006 July 2007 FX35/FX45
BRAKE FLUIDPFP:KN100
On-Board InspectionNFS000LU
LEVEL CHECK

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

Visually check around reservoir tank for fluid leakage.

If fluid level is excessively low, check brake system for leakage.

Release parking brake pedal and see if brake warning lamp
goes off. If not, check brake system for fluid leakage.
Drain and RefillNFS000LV
CAUTION:

Refill with new brake fluid “DOT3”.

Do not reuse drained brake fluid.

Be careful not to splash brake fluid on painted areas; it way cause paint damage. If brake fluid is
splashed on painted surfaces of body, immediately wipe it off and them wash it away with water
immediately.

Before working, disconnect connectors of ABS actuator and electric unit (control unit) or battery
negative terminal.
1. Connect a vinyl tube to each bleed valve.
2. Depress brake pedal, loosen each bleed valve, and gradually remove brake fluid.
3. Make sure there is no foreign material in reservoir tank, and refill with new brake fluid.
4. 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 master cylinder. Continue until new brake fluid flows out.
5. Bleed Air. Refer to BR-10, "
Bleeding Brake System" .
SFIA1032E
BRA0007D
SBR995

BR-10
BRAKE FLUID
Revision: 2006 July 2007 FX35/FX45
Bleeding Brake SystemNFS000LW
CAUTION:

Carefully monitor brake fluid level in reservoir tank
during bleeding operation.

Refill with new brake fluid “DOT 3”. Make sure it is at least
half way at all times while bleeding air out of system.

Place a container under master cylinder not to spill brake
fluid.

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

Bleed air in the following order. Right rear brake → Left
front brake → Left rear brake → Right front brake
1. Connect a transparent vinyl tube to bleed valve.
2. Fully depress brake pedal several times.
3. With brake pedal depressed, open bleed valve to release air.
4. Close bleed valve.
5. Release brake pedal slowly.
6. Repeat steps 2, through 5, until clear brake fluid comes out of bleed valve.
SBR995
SBR419C

BRAKE TUBE AND HOSE BR-11
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Revision: 2006 July 2007 FX35/FX45
BRAKE TUBE AND HOSEPFP:46210
Hydraulic CircuitNFS000LX
CAUTION:

All brake 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 tubes and hoses 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 way cause paint damage. If brake fluid is
splashed on painted surfaces of body, immediately wipe it off and them wash it away with water
immediately.

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

When removing components, cover brake line connections so that no dirt, no dust, or other for-
eign matter gets in.

Refill with new brake fluid “ DOT 3 ”.

Do not reuse drained brake fluid.
Removal and Installation of Front Brake Tube and Brake Hose NFS000LY
REMOVAL
1. Drain brake fluid. Refer to BR-9, "Drain and Refill" .
2. Using a flare nut wrench, remove brake tube from brake hose.
3. Remove union bolt and remove brake hose from caliper assembly.
4. Remove lock plate and remove brake hose from vehicle.
INSTALLATION
1. Position brake hose by aligning with the protrusion on caliper assembly, and them tighten union bolt to the specified torque.
CAUTION:
Do not reuse copper washer.
2. Install brake hose to brake tube. Temporarily tighten flare nut by hand as much as possible. Secure them it to bracket with lock
plate.
3. Using a flare nut torque wrench, tighten flare nut to the specified torque.
4. Refill brake fluid and bleed air. Refer to BR-10, "
Bleeding Brake
System" .
PFIA0818E
SFIA1204E

BR-12
BRAKE TUBE AND HOSE
Revision: 2006 July 2007 FX35/FX45
Removal and Installation of Rear Brake Piping and Brake Hose NFS000LZ
REMOVAL
1. Drain brake fluid. Refer to BR-9, "Drain and Refill" .
2. Using a flare nut wrench, remove brake tube from brake hose.
3. Remove union bolt, and then remove brake hose from caliper assembly.
4. Remove lock nut plate and remove brake hose from vehicle.
INSTALLATION
1. Install brake hose to caliper assembly positioning hole and then tighten union bolt to the specified torque. Refer to BR-11, "
Hydraulic Circuit" .
CAUTION:
Do not reuse copper washer.
2. Connect brake hose to brake tube. Temporarily tighten flare nut by hand as much as possible.
3. Tighten brake hose mounting bolt to the specified torque.
4. Using a flare nut torque wrench, tighten flare nut to the specified torque. Refer to BR-11, "
Hydraulic Circuit" .
5. After installation, bleed air. Refer to BR-10, "
Bleeding Brake
System" .
Inspection After InstallationNFS000M0
CAUTION:
If a leak is detected at the connections, retighten it or replace damaged part if necessary.
1. Check brake lines (tubes and hoses), and connections for fluid leakage, damage, twist, deformation, con- tact with other parts, and loose connections.
2. While depressing brake pedal under a force of 785 N (80 kg, 177 lb) with engine running for approximately 5 seconds, check for fluid leak from each part.
SFIA1942E

BRAKE MASTER CYLINDER BR-13
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Revision: 2006 July 2007 FX35/FX45
BRAKE MASTER CYLINDERPFP:46010
On-Board InspectionNFS000M1
LEAK INSPECTION

Check for leaking in a master cylinder installation surface, a reservoir tank installation surface, and brake
tube connections.
ComponentsNFS000M3
Removal and InstallationNFS000M2
CAUTION:
Be careful not to splash brake fluid on painted areas; it way cause paint damage. If brake fluid is
splashed on painted surfaces of body, immediately wipe it off and them wash it away with water imme-
diately.
REMOVAL
1. Remove cowl top cover. Refer to EI-23, "COWL TOP" .
2. Drain brake fluid. Refer to BR-9, "
Drain and Refill" .
3. Remove harness connectors for fluid level sensor and pressure sensor.
4. Using a flare nut wrench, remove brake tube from master cylinder assembly.
1. Reservoir cap 2. Strainer 3. Reservoir tank
4. Grommet 5. Cylinder body 6. Pin
7. Pressure sensor 8. Pressure sensor (Only ICC models)
Refer to GI-11, "
Components" and the followings for the symbols in the figure.
: Apply brake fluid.
PFIA0815E

BR-14
BRAKE MASTER CYLINDER
Revision: 2006 July 2007 FX35/FX45
5. Remove master cylinder assembly mounting nut, remove master cylinder assembly from the vehicle.
Refer to BR-16, "
Removal and Installation" .
INSTALLATION
CAUTION:

Refill with new brake fluid “DOT3”.

Do not reuse drained brake fluid.
1. Install in the reverse order of removal, and tighten mounting nuts to the specified torque. Refer to BR-15,
"Components" .
2. Refill brake fluid and bleed air. Refer to BR-10, "
Bleeding Brake System" .
Disassembly and AssemblyNFS000M4
DISASSEMBLY
CAUTION:

Master cylinder can not be disassembled.

Remove reservoir tank only when absolutely necessary.
1. Remove pin (1).
2. Remove reservoir tank and grommet from master cylinder assembly.
ASSEMBLY
CAUTION:

Do not use mineral oil 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 grommet and attach to master cylinder assembly. CAUTION:
Do not reuse grommet.
Do not reuse pin.
2. Install reservoir tank onto master cylinder assembly.
3. Install pin (1).
PFIA0816E
PFIA0816E

BRAKE BOOSTER BR-15
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Revision: 2006 July 2007 FX35/FX45
BRAKE BOOSTERPFP:47200
On-Vehicle ServiceNFS000M5
OPERATING CHECK
With engine stopped, change the vacuum to the atmospheric pres-
sure by depressing brake pedal several times. Then with brake
pedal fully depressed, start engine and when the vacuum pressure
reaches the standard, make sure the clearance between brake pedal
and floor panel decreases.
CAUTION:
Depressing pedal interval is approximately 5 seconds.
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 dis-
tance between brake pedal and floor panel gradually increases.

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 is interval is approximately at intervals
5 seconds.
ComponentsNFS000OB
BRA0037D
SBR365AA
1. Reservoir tank 2. Master cylinder 3. Gasket
4. Brake booster
Refer to GI-11, "
Components" , for the symbols in the figure.
PFIA0817E

BR-16
BRAKE BOOSTER
Revision: 2006 July 2007 FX35/FX45
Removal and InstallationNFS000M6
REMOVAL
CAUTION:

Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is
splashed on painted surfaces of body, immediately wipe it off and them wash it away with water
immediately.

Be careful not to deform or bend brake tube 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 dur-
ing installation, dash panel may damage the threads.

Install the check valve in the correct direction.
1. Remove vacuum hose from brake booster. Refer to BR-17, "
VACUUM LINES" .
2. Remove brake master cylinder. Refer to BR-13, "
Removal and Installation" .
3. Disconnect harness connector from brake booster assembly. (ICC model)
4. Remove snap pin and clevis pin from inside the vehicle. Refer to BR-7, "
Components" .
5. Remove nuts from brake booster and brake pedal bracket.
6. Remove brake booster assembly from engine room.
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 brake booster.
2. Check output rod length.
INSTALLATION
1. Loosen lock nut to adjust input rod length so that the length “B” (shown in the figure) satisfies the specified value.
2. After adjusting “B”, temporarily tighten lock nut to install brake booster assembly to the vehicle. At this time, make sure to
install a gasket between brake booster assembly and the engine
room.
3. Connect brake pedal with clevis of input rod.
4. Install brake pedal bracket mounting nuts and bolt and tighten them to the specified torque. BR-7, "
Components" .
5. Install brake tube from brake master cylinder to ABS actuator. Refer to BR-11, "
Hydraulic Circuit" .
6. Install master cylinder to booster assembly. Refer to BR-13, "
Removal and Installation" .
7. Adjust the height and play of brake pedal. BR-6, "
Inspection and Adjustment" .
8. Tighten lock nut of input rod to the specified torque. Refer to BR-15, "
Components" .
9. Bleed air. Refer to BR-10, "
Bleeding Brake System" .
Standard dimension when applying a vacuum of
− 66.7 kPa ( −500 mmHg, −19.69 inHg):
15.6 − 15.9 mm (0.614 − 0.626 in)
SFIA2146E
Length “B” : 126.5 mm (4.98 in)
SGIA0060E