Infiniti G35 (V35). Manual - part 232

FRONT DISC BRAKE

BR-23

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6.

Check brake for drag.

7.

Install tires to vehicle.

Removal and Installation of Brake Caliper Assembly 

NFS000JX

REMOVAL

1.

Remove tires from vehicle with a power tool.

2.

Fasten disc rotor using wheel nut.

3.

Drain brake fluid. Refer to 

BR-9, "Drain and Refill"

 .

4.

Remove union bolt and then remove brake hose from caliper
assembly.

5.

Remove torque member mounting bolts (from torque member),
and remove caliper assembly (from vehicle with a power tool).

CAUTION:

Do not drop brake pad.

6.

Remove disc rotor.

CAUTION:

Put matching marks on wheel hub assembly and disc rotor,
when if it necessary to removing disc rotor.

INSTALLATION

CAUTION:

●

Refill with new brake fluid “DOT 3”.

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Never reuse drained brake fluid.

1.

Install disc rotor.

CAUTION:

Matching marks of disc rotor and wheel hub put at the time of removal when reusing disc rotor.

2.

Install caliper assembly to vehicle, and tighten torque member mounting bolts to the specified torque.
Refer to 

BR-21, "Components"

 .

CAUTION:

Before installing caliper assembly to vehicle, wipe oil and grease on washer seats on steering
knuckle and mounting surface of caliper assembly.

3.

Install a projection of brake hose metal fitting by aligning with protrusions on cylinder body, and tighten
union bolt to the specified torque. Refer to 

BR-21, "Components"

 .

CAUTION:

●

Do not reuse copper washers for union bolts.

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Assemble brake hose securely on caliper assembly.

4.

Insert new brake fluid and bleed air. Refer to 

BR-10, "Bleeding Brake System"

 .

5.

Check brake for drag.

6.

Install tires to vehicle.

Disassembly and Assembly of Brake Caliper Assembly 

NFS000JY

NOTE:
Do not remove torque member, brake pads, shims, shim covers and pad retainers when disassembling and
assembling cylinder body.

SFIA0140E

BR-24

FRONT DISC BRAKE

DISASSEMBLY

1.

Remove caliper assembly from vehicle. Refer to 

BR-23,

"Removal and Installation of Brake Caliper Assembly"

 .

2.

Remove sliding pin bolts from cylinder body, and remove pads,
shims, shim covers and pad retainers from torque member.

CAUTION:

When removing pad retainer from torque member, lift pad
retainer in the direction shown by arrow (shown in the fig-
ure) so as not to deform it.

3.

Remove sliding pins and sliding pin boots from torque member.

4.

Place a wooden block as shown in the figure, and blow air from
union bolt mounting hole to remove pistons and piston boots.

CAUTION:

Do not get fingers caught in the pistons.

5.

Using a flat-bladed screwdriver, remove piston seals from cylin-
der body.

CAUTION:

Be careful not to damage the inner wall of cylinder.

INSPECTION AFTER DISASSEMBLY
Cylinder Body

CAUTION:

Use new brake fluid to clean. Do not use mineral oils such as gasoline or kerosene.

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Check the inner wall of cylinder for corrosion, wear, and damage. If a malfunction is detected, replace cyl-
inder body.

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Minor flaws caused by corrosion or a foreign material can be removed by polishing a surface of the inner
wall with a fine sandpaper. Replace cylinder body, if a malfunction is detected.

Torque Member

Check for wear, cracks, and damage. If a malfunction is detected, replace applicable part.

Piston

CAUTION:

The piston sliding surface is plated. Do not polish with sandpaper.
Check piston surface for corrosion, wear, and damage. If a malfunction is detected, replace applicable part.

Sliding Pin, Sliding Pin Bolt, and Sliding Pin Boot

Check sliding pins, sliding pin bolts and sliding pin boots for wear, damage, and cracks. If a malfunction is
detected, replace applicable part.

SBR556E

BRB0032D

SFIA0141E

FRONT DISC BRAKE

BR-25

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ASSEMBLY

1.

Apply polyglycol ether based lubricant to the piston seal, and
install them to the cylinder body.

CAUTION:

Do not reuse piston seal.

2.

Apply rubber grease to piston boots. Cover the piston end with
piston boot, and install cylinder-side lip on piston boot properly
into groove on cylinder body.

CAUTION:

Do not reuse piston boot.

3.

Apply brake fluid to piston, and press piston into cylinder body
by hand to assemble piston-side lip on piston boot properly into
a groove on piston.

CAUTION:

Press piston evenly and change pressing point to prevent
inner wall of cylinder from being rubbed.

4.

Install sliding pins and sliding pin boots to the torque member.

5.

Install the torque member to the steering knuckle and tighten the mounting bolts to the specified torque.
Refer to 

BR-21, "Components"

 .

CAUTION:

Before installing torque member to vehicle, wipe off oil and grease on the washer seats on steer-
ing knuckle and the mounting surface of the torque member.

6.

Install pad retainers and pad assemblies to torque member.

CAUTION:

Inner pad and outer pad have pad-return mechanism on
upper side of pad retainer. When installing pad to torque
member, be sure to install pad return lever to pad wear sen-
sor securely.

7.

Press in piston until pads can be installed, and then install cylin-
der body to torque member.

8.

Install cylinder body, and tighten sliding pin bolt to the specified
torque. Refer to 

BR-21, "Components"

 .

9.

Position a projection of brake hose metal fitting by aligning with
protrusions on cylinder body and tighten union bolt to specified torque. Refer to 

BR-21, "Components"

 .

CAUTION:

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Assemble brake hose securely to cylinder body.

●

Do not reuse copper washer for union bolts.

SFIA2920E

SFIA2432E

SBR574

SBR557E

BR-26

FRONT DISC BRAKE

10. After installing caliper assembly, refill with new brake fluid and bleed air. Refer to 

BR-10, "Bleeding Brake

System"

 .

DISC ROTOR INSPECTION
Visual Inspection

Check surfaces of disc rotor for uneven wear, cracks, and serious damage. If a malfunction is detected,
replace applicable part.

Runout Inspection

1.

Using wheel nuts, secure disc rotor to wheels hub. (2 or more positions)

2.

Using a dial gauge, check runout.

NOTE:
Make sure that wheel bearing axial end play is with in the speci-
fication before measuring runout. Refer to 

FAX-4, "WHEEL

BEARING INSPECTION"

3.

If runout is outside limit, find the minimum runout point by shifting the mounting positions of disc rotor and
wheel hub by one hole.

4.

If runout is still out of specification, grind rotor with on-car brake lathe (“MAD, DL-8700”, “AMMCO 700
and 705” or equivalent) until runout becomes within the specified limit.

Thickness Inspection

Using a micrometer, check thickness of disc rotor. If thickness is out-
side standard, replace disc rotor.

Brake Burnishing Procedure

NFS000JZ

Burnish the brake pad and disc rotor mutually contacting surfaces of disc rotor according to following proce-
dure after refinishing or replacing rotors, after replacing pads, or if a soft pedal occurs at very low mileage.

CAUTION:

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Be careful of vehicle speed because brake does not operate easily until pad and disc rotor are
securely fitted.

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Only perform this procedure under safe road and traffic conditions. Use extreme caution.

1.

Drive vehicle on straight, flat road.

2.

Depress brake pedal with the power to stop vehicle within 3 to 5 seconds until the vehicle stops.

3.

Drive without depressing brake for a few minutes to cool brake.

4.

Repeat steps 1 to 3 until pad and disc rotor are securely fitted.

Measurement point:

At a point 10.0 mm (0.394 in) from outer edge of 
disc rotor

Runout limit (with it attached to the vehicle):

0.035 mm (0.0014 in) or less

SBR019B

Standard thickness

: 28.0 mm (1.102 in)

Repair limit thickness

: 26.0 mm (1.024 in)

Maximum uneven wear (measured at 8 positions)

: 0.015 mm (0,0006 in) or less

SBR020B