Infiniti FX35, FX50 (S51). Manual - part 235

 

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Infiniti FX35, FX50 (S51). Manual - part 235

 

 

VACUUM LINES

BR-37

< REMOVAL AND INSTALLATION >

C

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VACUUM LINES

Exploded View

INFOID:0000000005234192

VQ35HR

VK50VE

1.

Clamp

2.

Vacuum hose

3.

Vacuum piping

4.

Clip

5.

Vacuum hose (built in check valve)

6.

Grommet

A.

To brake booster

B.

Paint mark

C.

Stamp indicating grommet installa-
tion position

D.

Stamp indicating engine direction

E.

To intake manifold

JPFIA0382ZZ

1.

Clamp

2.

Vacuum hose (built in check valve)

3.

Vacuum piping

4.

Clip

5.

Vacuum hose

6.

Grommet

A.

To brake booster

B.

Paint mark

C.

Stamp indicating engine direction

D.

Stamp indicating grommet installa-
tion position

E.

To intake manifold

JPFIA0381ZZ

BR-38

< REMOVAL AND INSTALLATION >

VACUUM LINES

Removal and Installation

INFOID:0000000005234193

REMOVAL

1.

Remove the engine cover. Refer to 

EM-27, "Exploded View"

 (VQ35HR), 

EM-174, "Exploded View"

(VK50VE).

2.

Remove the cowl top cover. Refer to 

EXT-22, "Exploded View"

.

3.

Remove the vacuum hose and tube.

INSTALLATION

Note the following, install in the reverse order of removal.
• Because vacuum hose contains a check valve, it must be installed in the correct position. Refer to the stamp

to confirm correct installation. Brake booster will not operate normally if the hose is installed in the wrong
direction. 

• When installing vacuum hose, insert it until its tip reaches the

back-end of length (A) or further as shown in the figure. 

- Face the marking side up when assembling (except for brake

booster side).

- Face the marking side front when assembling (for brake booster

side).

CAUTION:

Never use lubricating oil during assembly.

Inspection

INFOID:0000000005234194

INSPECTION AFTER REMOVAL

Appearance

Check for correct assembly, damage and deterioration.

Check Valve Airtightness

• Use a handy vacuum pump (A) to check.

• Replace vacuum hose assembly if vacuum hose and check valve

are malfunctioning.

Standard

A

: 24 mm (0.95 in) or more

JPFIA0023ZZ

When connected to the booster side (B):

Vacuum should decrease within 1.3 kPa (9.8 mm-
Hg, 0.38 inHg) for 15 seconds under a vacuum of 

66.7 kPa (

500 mmHg, 

19.69 inHg).

When connected to the engine side (C):              

Vacuum should not exist.

JPFIA0024ZZ

FRONT DISC BRAKE

BR-39

< REMOVAL AND INSTALLATION >

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FRONT DISC BRAKE

BRAKE PAD (2 PISTON TYPE)

BRAKE PAD (2 PISTON TYPE) : Exploded View

INFOID:0000000005234195

BRAKE PAD (2 PISTON TYPE) : Removal and Installation

INFOID:0000000005234196

REMOVAL

WARNING:

Clean any dust from the brake caliper and brake pads with a vacuum dust collector. Never blow with
compressed air.

CAUTION:

• Never depress the brake pedal while removing the brake pads because the piston may pop out.
• Never spill or splash brake fluid on the disc rotor.

1.

Remove tires with power tool.

2.

Remove lower sliding pin bolt.

3.

Suspend the cylinder body with suitable wire so that the brake hose will not stretch. Then remove the
brake pads, shims, shim covers and pad retainers from the torque member.

CAUTION:

• Never deform the pad retainer when removing the pad retainer from the torque member. 
• Never damage the piston boot.
• Never drop the brake pads, shims, and the shim covers.
• Remember each position of the removed brake pads.

INSTALLATION

WARNING:

Clean any dust from the brake caliper and brake pads with a vacuum dust collector. Never blow with
compressed air.

CAUTION:

• Never depress the brake pedal while removing the brake pads or the cylinder body because the pis-

ton may pop out.

• Never spill or splash brake fluid on the disc rotor.

1.

Cylinder body

2.

Inner shim cover

3.

Inner shim

4.

Inner pad (with pad wear sensor)

5.

Pad retainer

6.

Torque member

7.

Outer pad (with pad wear sensor)

8.

Outer shim

9.

Outer shim cover

: Apply copper based brake grease.

Refer to 

GI-4, "Components"

 for symbols not described on the above.

JPFIA0383GB

BR-40

< REMOVAL AND INSTALLATION >

FRONT DISC BRAKE

1.

Apply Copper based brake grease to the pad retainers before installing it to the torque member if the pad
retainers has been removed.

CAUTION:

• Securely assemble the pad retainers so that it will not be lifted up from the torque member.
• Never deform the pad retainers.

2.

Apply Copper based brake grease to the mating faces between the shims and the shim covers and install
them to the brake pad.

CAUTION:

Always replace the shims together with the shim covers when replacing the brake pad.

3.

Install the brake pads to the torque member.

CAUTION:

Both inner and outer pads have a pad return system on the
pad retainer. Install pad return lever (1) securely to pad wear
sensor (2).

4.

Install cylinder body to torque member.

CAUTION:

• Never damage the piston boot.
• When replacing brake pad with new one, check a brake

fluid level in the reservoir tank because brake fluid
returns to master cylinder reservoir tank when pressing
piston in.

NOTE:
Use a disc brake piston tool to easily press piston. 

5.

Install the lower sliding pin bolt and tighten it to the specified torque.

6.

Depress the brake pedal several times to check that no drag feel is present for the front disc brake. Refer
to 

BR-40, "BRAKE PAD (2 PISTON TYPE) : Inspection"

.

BRAKE PAD (2 PISTON TYPE) : Inspection

INFOID:0000000005234197

INSPECTION AFTER REMOVAL

Replace the shims and the shim covers if rust is excessively attached.

INSPECTION AFTER INSTALLATION

1.

Check a drag of front disc brake. If any drag is found, follow the procedure described below.

2.

Remove brake pads.

3.

Press the pistons.

CAUTION:

• Never damage the piston boot.
• When replacing a pad with new one, check a brake fluid level in the reservoir tank because brake

fluid returns to master cylinder reservoir tank when pressing piston in.

NOTE:
Use a disc brake piston tool to easily press piston.

4.

Install brake pads.

5.

Depress the brake pedal several times.

6.

Check a drag of front disc brake again. If any drag is found, disassemble the cylinder body. Refer to 

BR-

45, "BRAKE CALIPER ASSEMBLY (2 PISTON TYPE) : Disassembly and Assembly"

7.

Burnish contact surfaces brake pads and disc rotor after refinishing or replacing brake pads, or if a soft
pedal occurs at very low mileage. Refer to 

BR-14, "BRAKE PAD : Inspection and Adjustment"

.

BRAKE PAD (4 PISTON TYPE)

JPFIA0027ZZ

 

 

 

 

 

 

 

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