BR-4
PRECAUTIONS
Revision: 2006 November2007 350Z
Use flare nut crowfoot and torque wrench when removing and
installing brake tube.
When installing brake piping, be sure to check torque.
Before working, turn the ignition switch OFF and disconnect the
connectors of ABS actuator and control unit or the battery nega-
tive terminal.
Burnish the brake contact surfaces after refinishing or replacing
drums or rotors, after replacing pads or linings, or if a soft pedal
occurs at very low mileage.
Refer to BR-38, "
Brake Burnishing Procedure" .
WARNING:
Clean brake pads and shoes with a waste cloth, then wipe with a dust collector.SBR686C
BR-10
BRAKE FLUID
Revision: 2006 November2007 350Z
BRAKE FLUIDPFP:KN100
On-Vehicle InspectionNFS00008
LEVEL CHECK
Check that the fluid level in the reservoir tank is within the stan-
dard (between MAX and MIN lines).
Visually check around the reservoir tank for fluid leaks.
If fluid level is excessively low, check brake system for leaks.
If warning lamp remains illuminated after parking lever is
released, check brake system for fluid leakage.
Drain and RefillNFS00009
CAUTION:
Refill with new brake fluid “DOT3”.
Do not reuse drained brake fluid.
Do not let brake fluid come in contact with painted surfaces on the body. This might damage the
paint, so if it does come in contact, immediately wipe area and wash off with water.
1. Connect a vinyl tube to bleed valve.
2. Depress the brake pedal, loosen the bleed valve, and gradually
remove the brake fluid.
3. Before working, turn the ignition switch OFF and disconnect the
connectors of ABS actuator and control unit or battery negative
terminal.
4. Make sure there is no foreign material in the reservoir 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 master cylinder. Continue until new brake fluid flows out.
Bleed Air. Refer to BR-11, "
Bleeding Brake System" .
SBR451D
BRA0007D
BRA0006D
BRAKE FLUID
BR-11
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Revision: 2006 November2007 350Z
Bleeding Brake SystemNFS0000A
CAUTION:
While bleeding, pay attention to master cylinder fluid level.
1. Before working, turn the ignition switch OFF and disconnect the connectors of ABS actuator and control
unit 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 the brake pedal depressed, loosen the 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 the bleed valve to the specified torque. Refer to BR-27, "
Components" (Front) and BR-40, "Com-
ponents" (Rear).
7. In steps 2 to 6 below, with the master cylinder reservoir tank filled at least half way, bleed air from the front
left, rear left, and front right tires, in that order.
BR-16
BRAKE MASTER CYLINDER
Revision: 2006 November2007 350Z
ComponentsNFS0000J
Disassembly and AssemblyNFS0000K
MODELS WITHOUT VDC
Disassembly
CAUTION:
Only remove the reservoir tank 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 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.
1. Reservoir tank 2. Reservoir cap 3. Oil strainer
4. Pin 5. Cylinder body 6. Piston stopper
7. Grommet 8. Secondary piston assembly 9. Primary piston assembly
10. O-ring 11. Snap ring 12. Guide assembly
13. Plate 14. Stopper cap 15. Primary piston assembly
16. Secondary piston assembly
SFIA1728E
BRA0031D
BR-18
BRAKE MASTER CYLINDER
Revision: 2006 November2007 350Z
Inspection after Disassembly
Master cylinder
Check that there is no damage, friction, rusting, or pinholes on the cylinder inner wall, and replace if there
are any non-standard conditions.
Assembly
CAUTION:
Do not 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 use 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.
2. Insert the secondary piston assembly and primary piston
assembly into cylinder body in this order.
CAUTION:
Do not reuse the primary and secondary piston assem-
blies.
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.
3. Perform a visual inspection of the secondary piston slit through
the tank boss hole on the secondary-side of the cylinder body,
and install the piston stopper.
4. Holding down the piston with the stopper cap, push the stopper
cap tabs so they are firmly into the cylinder grooves, then attach
the stopper cap.
CAUTION:
Do not reuse the stopper cap.
5. Apply brake fluid the grommet and attach to the cylinder body.
CAUTION:
Do not reuse the grommet.
6. Attach the attachment in the inner kit to the reservoir cap as
described in disassembly step 2.
7. Master cylinder assembly is fixed in the vise as described in
disassembly step 3.SBR089C
BRA0519D
BRA0035D
BRAKE MASTER CYLINDER
BR-19
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BR
Revision: 2006 November2007 350Z
NOTE:
Attach the reservoir tank in the orientation shown in the figure.
8. Using a pin punch [commercial service tool: diameter Approx. 4
mm (0.16 in)], attach the reservoir tank mounting pin so that the
attachment side and the opposite side are identical.
CAUTION:
Do not reuse reservoir tank and mounting pin.
MODELS WITH VDC
Disassembly
CAUTION:
While working, cover the primary piston rod with cloth to prevent it from being damaged.
Only remove the reservoir tank when absolutely necessary.
1. Place the side of the cylinder body with chamfering around the
pin insertion hole up, and secure the cylinder body flange sec-
tion with a vise as shown in the figure.
CAUTION:
When securing in a vise, use copper plates or cloth to pro-
tect the flange.
2. Using a pin punch [commercial service tool: diameter Approx 4
mm (0.16 in)], remove the reservoir tank mounting pin.
3. Remove master cylinder assembly from the vise.
4. Remove reservoir tank and grommet from cylinder body.
BRA0568D
SFIA0250E
BRA0558D
BRA0559D
BR-24
BRAKE BOOSTER
Revision: 2006 November2007 350Z
Removal and InstallationNFS0000M
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.
1. Remove vacuum hose from the brake booster. Refer to BR-25, "
VACUUM LINES" .
2. Remove the brake master cylinder. Refer to BR-24, "
Removal and Installation" .
3. Remove the brake piping between brake master cylinder and ABS actuator and electric unit (control unit).
Refer to BR-12, "
Hydraulic Circuit" .
CAUTION:
For M/T vehicles with remove the brake piping after removing the clutch reservoir tank bolt.
4. Remove the brake pedal attachment snap pin and clevis pin from inside the vehicle.
5. Remove the nuts on the brake booster and brake pedal assembly.
6. Remove brake booster assembly from the engine compartment side.
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 on the right) satisfies the specified value.
2. 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 vehicle.
3. Connect the brake pedal with the clevis of the input rod.
4. Install the pedal bracket mounting nuts and tighten them to the
specified torque.
5. Install the brake piping between brake master cylinder and ABS
actuator and electric unit (control unit). Refer to BR-12, "
Hydraulic Circuit" .
6. Install the master cylinder to the booster assembly. Refer to BR-24, "
Removal and Installation" .
7. Adjust the height and play of the brake pedal. Refer to BR-7, "
ADJUSTMENT" .
8. Tighten the lock nut of the input rod to the specified torque. Refer to BR-23, "
Components" .
9. Refill new brake fluid and bleed air. Refer to BR-11, "
Bleeding Brake System" . Standard dimension when vacuum −66.7 kPa
(−500 mmHg, −19.69 inHg)
With TCS : 10.4 mm (0.409 in)
With VDC : −6.2 mm (−0.244 in)
SBR208E
Length “B” : 125 mm (4.92 in)
SGIA0060E