Infiniti F50. Manual - part 257

BRAKE FLUID

BR-9

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BRAKE FLUID

PFP:KN100

Checking Brake Fluid Level

EFS0020Z

●

Check fluid level in reservoir tank. It should be between Max and
Min lines on reservoir tank.

●

If fluid level is extremely low, check brake system for leaks.

●

Release parking brake lever and see if brake warning lamp goes
off. If not, check brake system for leaks.

Checking Brake Line

EFS00210

CAUTION:

If leakage occurs around joints, retighten or, if necessary, replace damaged parts.

1.

Check brake line (tubes and hoses) for cracks, deterioration or other damage. Replace any damaged
parts.

2.

Check for oil leakage by fully depressing brake pedal while
engine is running.

CAUTION:

If leakage occurs around joints, retighten or, if necessary,
replace damaged parts.

3.

Check brake lines (tubes and hoses) for cracks, deterioration or
other damage. Replace any damaged parts.

4.

Check for oil leakage by fully depressing brake pedal while
engine is running.

Drain and Refill

EFS002AU

CAUTION:

●

Refill with new brake fluid “DOT3”.

●

Never reuse drained brake fluid.

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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.

Turn the key switch to the off position and remove the negative battery cable.

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 cylin-
der. Continue until new brake fluid flows out.
Bleed Air. Refer to 

BR-10, "Bleeding Brake System"

 .

SBR451D

SBR389C

BR-10

BRAKE FLUID

Bleeding Brake System

EFS00211

CAUTION:

●

Carefully monitor brake fluid level at master cylinder
during bleeding operation.

●

Fill reservoir with new brake fluid “DOT 3”. Make sure it
is full at all times while bleeding air out of system.

●

Place a container under master cylinder to avoid spillage of
brake fluid.

●

For models with VDC/TCS/ABS, turn ignition switch OFF
and disconnect VDC actuator connectors or battery ground
cable.

●

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 PIPING AND HOSE

BR-11

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BRAKE PIPING AND HOSE

PFP:46210

Hydraulic Circuit

EFS000FW

CAUTION:

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When installing, check for twist and fracture.

●

Make sure that there is no interference with other parts when turning steering clockwise or coun-
terclockwise.

●

The brake piping is an important safety part. If a brake fluid leak is detected, always disassemble
parts. Replace applicable part with a new one.

Front Brake Piping and Hose

EFS000FX

REMOVAL 

1.

Connect a vinyl tube to bleed valve.

2.

Drain brake fluid gradually from bleed valve of each wheel while
depressing brake pedal.

3.

Cover the brake line connection to prevent foreign material such
as dust or dirt from entering into the connection.

4.

Using a flare nut wrench, remove brake tube from brake hose.
Remove union bolt, and remove brake hose from caliper assem-
bly.

5.

Remove lock plate.

6.

Remove mounting nuts, and remove brake hose from vehicle.

INSTALLATION 

1.

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

CAUTION:

●

Do not reuse copper washer.

2.

Install brake hose to brake tube on vehicle, and temporarily tighten flare nut by hand until it stops to install
bracket. Fix it with lock plate, and tighten it to the specified torque.

3.

Install brake hose to vehicle, and tighten mounting nuts to the specified torque.

4.

After work, bleed air.

SFIA0856E

SFIA0170E

BR-12

BRAKE PIPING AND HOSE

Rear Brake Piping and Hose

EFS000FY

REMOVAL 

1.

Connect a vinyl tube to bleed valve.

2.

Drain brake fluid gradually from bleed valve of each wheel while
depressing brake pedal.

3.

Cover the brake line connection to prevent foreign material such
as dust or dirt from entering into the connection.

4.

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

5.

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

6.

Remove brake hose mounting bolts, and remove brake hose
from vehicle.

INSTALLATION 

1.

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

CAUTION:

●

Do not reuse the copper washer.

●

Refill with new brake fluid 

″

DOT3

″

.

●

Never reuse drained brake fluid.

2.

Fix brake hose to vehicle. Temporarily tighten flare nut by hand until it stops, and tighten it to the specified
torque.

3.

After work, bleed air.

Inspection

EFS000FZ

CAUTION:

If leak is detected at the connections, retighten it or replace damaged part if necessary.

1.

Check hose, tube, and connections for fluid leaks, damage, twist, deformation, contact with other parts,
and loose connections.

2.

While depressing pedal under the force of 785 N (80 kg, 177 lb) with engine running for approximately 5
seconds, check for fluid leak from each part.

PFIA0006E