Infiniti M35/M45 Y50. Manual - part 319

BRAKE TUBE AND HOSE

BR-11

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BRAKE TUBE AND HOSE

PFP:46300

Hydraulic Circuit

NFS000RZ

SFIA3096E

BR-12

BRAKE TUBE AND HOSE

CAUTION:

●

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

●

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

●

Brake tubes and hoses are an important safety part. Always disassemble the parts and retighten
their fittings, if a brake fluid leak is detected. Replace applicable part with a new one, if damaged
part is detected.

●

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.

●

Cover the open end of brake tubes and hoses when disconnecting to prevent entrance of dirt.

●

Refill with new brake fluid “DOT 3”.

●

Never reuse drained brake fluid.

Removal and Installation of Front Brake Tube and Brake Hose 

NFS000S0

REMOVAL

1.

Drain brake fluid. Refer to 

BR-9, "Drain and Refill"

 .

2.

Disconnect brake hose from brake tube, using a flare nut wrench.

3.

Remove union bolt and remove brake hose from caliper assem-
bly.

4.

Remove lock plate and remove brake hose from vehicle.

INSTALLATION

1.

Assemble the union bolt and copper washer to the brake hose.

CAUTION:

Do not reuse copper washer.

2.

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

BR-11, "Hydraulic Circuit"

 . 

3.

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

4.

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

BR-11, "Hydraulic Cir-

cuit"

 .

5.

Refill brake fluid and bleed air. Refer to 

BR-10, "Bleeding Brake System"

 .

Removal and Installation of Rear Brake Tube and Brake Hose 

NFS000S1

REMOVAL

1.

Drain brake fluid. Refer to 

BR-9, "Drain and Refill"

 .

A.

With out ICC

B.

With ICC

1.

Front disc brake

2.

Master cylinder

3.

Brake booster

4.

Rear disc brake

5.

ABS actuator and electric unit (con-
trol unit)

6.

Connector

7.

Brake hose

8.

Brake tube

: Flare nut 

: 18.2 N·m (1.9 kg-m, 13 ft-lb)

: 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 (0.7 kg-m, 62 in-lb)

Refer to 

GI-11, "Components"

 , for the symbols in the figure.

SFIA2964E

BRAKE TUBE AND HOSE

BR-13

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2.

Disconnect brake hose from brake tube, using a flare nut wrench.

3.

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

4.

Remove lock plate and then remove brake hose from vehicle.

INSTALLATION

1.

Assemble the union bolt and copper washer to the brake hose.

CAUTION:

Do not reuse copper washer.

2.

Attach L-shape metal fitting of the brake hose to brake caliper assembly positioning hole, and then tighten
union bolt to the specified torque. Refer to 

BR-11, "Hydraulic Circuit"

 .

3.

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

4.

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

BR-11, "Hydraulic Cir-

cuit"

 .

5.

Refill brake fluid and bleed air. Refer to 

BR-10, "Bleeding Brake System"

 .

Inspection after Installation

NFS000S2

CAUTION:

Brake tubes and hoses are important safety parts. Always disassemble the parts and retighten their fit-
tings, if a brake fluid leak is detected. Replace applicable part with a new one, if damaged part is
detected. 

1.

Check brake lines (tubes and hoses) and connections for fluid leakage, damage, twists, deformation, con-
tacts 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 for approximately
5 seconds, then check each part for fluid leakage.

SFIA2049E

BR-14

BRAKE MASTER CYLINDER

BRAKE MASTER CYLINDER

PFP:46010

On-Board Inspection

NFS000S3

LEAK INSPECTION

●

Check for leaking in a master cylinder installation surface, a reservoir tank installation surface, and brake
tube connections.

Removal and Installation

NFS000S4

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.

●

Never scratch the piston of master cylinder when installing/removing because the piston is
exposed. Check if any dust is not on the piston, and wash with brake fluid if needed.

●

Hold cylinder body when handing master cylinder. Never hold the piston because the piston might
be detached if pulled strongly.

REMOVAL 

1.

Drain brake fluid. Refer to 

BR-9, "Drain and Refill"

 .

2.

Disconnect brake fluid level switch harness connector.

3.

Disconnect master cylinder brake tubes, using a flare nut wrench.

4.

Remove master cylinder mounting nuts and remove master cylinder assembly from vehicle.

INSTALLATION

CAUTION:

●

Refill with new brake fluid “DOT 3”.

●

Never reuse drained brake fluid.

1.

Installation is in the reverse order of removal.

CAUTION:

Apply silicone grease to brake booster (to “A” position in
the figure) when installing master cylinder to brake booster.

2.

Tighten brake tube flare nut to the specified torque using a flare
nut torque wrench. Refer to 

BR-11, "Hydraulic Circuit"

 .

3.

Refill with new brake fluid and bleed air. Refer to 

BR-10, "Bleed-

ing Brake System"

 .

SFIA2847J