Infiniti G35 (V35). Manual - part 229

BRAKE PIPING AND HOSE

BR-11

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BRAKE PIPING AND HOSE

PFP:46210

Hydraulic Circuit

NFS0005D

CAUTION:

●

All hoses and piping (tubes) must be free from excessive bending, twisting and pulling.

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

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The brake tubes and hoses are an important safety parts. 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 way cause paint damage. If brake fluid is
splashed on painted surfaces of body, immediately wipe it off with cloth and then wash it away
with water.

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

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

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Refill with new brake fluid “ DOT 3 ”.

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Never reuse drained brake fluid.

Removal and Installation of Front Brake Piping and Hose

NFS0005E

REMOVAL

1.

Drain brake fluid. Refer to 

BR-9, "Drain and Refill"

 .

2.

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

3.

Remove lock plate.

4.

Remove mounting nuts, and remove brake hose from vehicle.

PFIA0871E

BR-12

BRAKE PIPING AND HOSE

INSTALLATION

1.

Assemble union bolt and copper washers to brake hose.

2.

Position the metal fitting of brake hose by aligning with the pro-
trusion on the caliper assembly, and tighten union bolt to the
specified torque.

CAUTION:

●

Do not reuse copper washer.

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Refill with new brake fluid “DOT3”.

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Never reuse drained brake fluid.

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Do not reuse brake mounting nuts.

3.

Connect brake hose to brake tube on vehicle, and temporarily
tighten flare nut by hand until as much as possible. Fix it with
lock plate, and tighten flare nut to the specified torque with a
flare nut torque wrench. Refer to 

BR-11, "Hydraulic Circuit"

 .

4.

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

BR-11, "Hydraulic Circuit"

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5.

After the work, bleed air. Refer to 

BR-10, "Bleeding Brake Sys-

tem"

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Removal and Installation of Rear Brake Piping and Hose

NFS0005F

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 plate, and remove brake hose from vehicle.

INSTALLATION

1.

Assemble union bolt and copper washers to brake hose. 

2.

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

BR-11, "Hydraulic Circuit"

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CAUTION:

●

Do not reuse copper washer.

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Refill with new brake fluid “DOT3”.

●

Never reuse drained brake fluid.

3.

Connect brake hose to brake tube on the vehicle, and tempo-
rarily tighten flare nut by hand as much as possible. Secure it to
bracket with lock plate, and tighten flare nut to the specified
torque with a flare nut torque wrench. Refer to 

BR-11, "Hydraulic

Circuit"

 .

4.

After the work, bleed air. Refer to 

BR-10, "Bleeding Brake System"

 .

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BRAKE PIPING AND HOSE

BR-13

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Inspection after Installation

NFS0005G

CAUTION:

If leak is detected at the connections, retighten it or replace the damaged part.
1.

Check brake hoses, tubes, and connections for fluid leaks, damage, twist, deformation, contact with other
parts, and loose connections.

2.

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

BR-14

BRAKE MASTER CYLINDER

BRAKE MASTER CYLINDER

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On-Vehicle Inspection

NFS0005H

LEAK INSPECTION

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

Removal and Installation

NFS0005I

CAUTION:

●

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

●

Do not operate with primary piston when removing and installing.

REMOVAL

1.

Drain brake fluid. Refer to 

BR-9, "Drain and Refill"

 .

2.

Remove harness connector for brake fluid level switch.

3.

Using a flare nut wrench, remove brake tube from master cylinder.

4.

Remove mounting nuts, and remove master cylinder assembly from vehicle. Refer to 

BR-18, "Removal

and Installation"

 .

INSTALLATION

CAUTION:

●

Refill with new brake fluid “DOT3”.

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Never reuse drained brake fluid.

1.

Install master cylinder to brake booster assembly, and tighten mounting nuts to the specified torque. Refer
to 

BR-17, "Components"

 .

CAUTION:

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Check if the lot of primary piston has dust or scratch.

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Do not damage and stain rod of primary piston.

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Do not reuse O-ring.

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Apply PBC (Poly Butyl Cuprysil) grease or silicone-based grease to O-ring and primary piston. 

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Apply PBC (Poly Butyl Cuprysil) grease or silicone-based
grease to the master cylinder insertion of brake booster.

2.

Install brake tube to master cylinder, and temporarily tighten the flare nuts on the brake tube to master cyl-
inder by hand.

3.

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

BR-11,

"Hydraulic Circuit"

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4.

Install harness connector of brake fluid level switch.

5.

Refill new brake fluid and bleed air. Refer to

BR-10, "Bleeding Brake System"

 .

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