Content .. 4 5 6

Qashqai J11. Brake system - part 6

BR-82

< REMOVAL AND INSTALLATION >

[RHD]

FRONT DISC BRAKE

Remove piston seal from cylinder body using suitable tool.

CAUTION:

Be careful not to damage a cylinder inner wall.

ASSEMBLY

Apply rubber grease to piston seal (1), and install to cylinder
body.

CAUTION:

Never reuse piston seal.

Apply rubber grease to piston boot (1). Cover the piston (2) end
with piston boot, and then install cylinder side lip on piston boot
securely into a groove on cylinder body.

CAUTION:

Never reuse piston boot.

Apply brake fluid to piston (1). Push piston into cylinder body by
hand and push piston boot (2) piston-side lip into the piston
groove.

CAUTION:

Press the piston evenly and vary the pressing point to pre-
vent cylinder inner wall from being rubbed.

Apply rubber grease to bushing, install bushing to sliding pin.

Apply rubber grease to sliding pins and sliding pin boots, install
sliding pins and sliding pin boots to torque member.

Install the cylinder body to the torque member and tighten the
sliding pin bolts to the specified torque.

BRAKE CALIPER ASSEMBLY : Inspection and Adjustment

INFOID:0000000010305482

INSPECTION AFTER DISASSEMBLY

Cylinder Body

Check the inner wall of the cylinder for rust, wear, cracks or damage. Replace the cylinder if any abnormal
condition is detected.

CAUTION:

Always clean with new brake fluid. Never clean with mineral oil such as gasoline and light oil.

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FRONT DISC BRAKE

BR-83

< REMOVAL AND INSTALLATION >

[RHD]

Torque Member

Check the torque member for rust, wear, cracks or damage. Replace the member if any abnormal condition is
detected.

Piston

Check the surface of the piston for rust, wear, cracks or damage. Replace the piston if any abnormal condition
is detected.

CAUTION:

A piston sliding surface is plated. Never polish with sandpaper.

Sliding Pin and Sliding Pin Boot

Check the sliding pins and sliding boots for rust, wear, cracks or damage. Replace the parts if any abnormal
condition is detected.

ADJUSTMENT AFTER INSTALLATION

Brake Burnishing Procedure

Burnish contact surfaces between disc rotors and pads according to following procedure after refinishing or
replacing disc rotor, or if a soft pedal occurs at very low mileage.

CAUTION:

• Be careful of vehicle speed because the brake does not operate easily until pad and disc rotor are

securely fitted.

• Only perform this procedure under safe road and traffic conditions. Use extreme caution.
1.

Drive vehicle on straight, flat road.

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

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

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

BR-84

< REMOVAL AND INSTALLATION >

[RHD]

REAR DISC BRAKE

REAR DISC BRAKE

BRAKE PAD

BRAKE PAD : Exploded View

INFOID:0000000010471471

BRAKE PAD : Removal and Installation

INFOID:0000000010471472

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 or the cylinder body because the pis-

ton may pop out.

• Never spill or splash brake fluid on the disc rotor.
• With consult perform EHS/PKB work support. Refer to

PB-47, "Work Procedure"

Remove tires.

Bolt

Actuator

Sliding pin bolt

Cap

Bleeder valve

Cylinder body

Piston

Piston boot

Sliding pin boot

10.

Bushing

11. Torque member

12.

Outer shim

13.

Outer pad

14. Inner pad

15.

Inner shim

: Apply rubber grease.

: Apply brake fluid.

Refer to

GI-4, "Components"

for symbols not described on the above.

E1FIA0155GB

REAR DISC BRAKE

BR-85

< REMOVAL AND INSTALLATION >

[RHD]

Loosen the upper sliding pin bolt and remove the lower sliding pin bolt.

Using the upper sliding pin bolt as a pivot, swing the brake caliper down from the torque member. Leaving
the brake hose attached, support the brake caliper with wire.

Remove the brake pads, shims, shim covers, pad retainers, and anti-rattle clips from the torque member.

CAUTION:

• Never deform the pad retainers if removing the pad retainers.
• Never damage the piston boot.
• Never drop the brake pad, shims, and the shim cover.

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.
• After installation, with perform EHS/PKB work support. Refer to

PB-47, "Work Procedure"

Install the pad retainers to the torque member if pad retainer is removed.

CAUTION:

• Securely assemble the pad retainers so that they cannot be lifted up from the torque member.
• Never deform the pad retainers.

Apply copper based brake grease to the mating faces between the brake pads and the shims and install
them to the brake pad.

CAUTION:

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

Install the brake pads to the torque member.

Using a suitable tool, press the pistons into the brake caliper.

CAUTION:

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

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

Using the upper sliding pin bolt as a pivot, swing the brake caliper up to the torque member.

Install the lower sliding pin bolts. Tighten all sliding pin bolts to specification. Refer to

BR-84, "BRAKE PAD

: Exploded View"

Depress the brake pedal several times and verify that drag does not exist.

Install the tires

Check brake fluid level and refill as necessary. Refer to

BR-11, "Inspection"

BRAKE PAD : Inspection and Adjustment

INFOID:0000000010471473

INSPECTION AFTER REMOVAL

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

ADJUSTMENT AFTER INSTALLATION

Brake Burnishing Procedure

Burnish contact surfaces between pads according to following procedure after refinishing or replacing pads, or
if a soft pedal occurs at very low mileage.

CAUTION:

• Be careful of vehicle speed because the brake does not operate easily until pad and disc rotor are

securely fitted.

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

Drive vehicle on straight, flat road.

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

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

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

BR-86

< REMOVAL AND INSTALLATION >

[RHD]

REAR DISC BRAKE

BRAKE CALIPER ASSEMBLY

BRAKE CALIPER ASSEMBLY : Exploded View

INFOID:0000000010471474

BRAKE CALIPER ASSEMBLY : Removal and Installation

INFOID:0000000010471475

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. Brake fluid may splash while removing the brake hose.
• With consult perform EHS/PKB work support. Refer to

PB-56, "Work Procedure"

Remove tires.

Secure the disc brake rotor using wheel nuts.

Drain brake fluid. Refer to

BR-11, "Draining"

CAUTION:

Bolt

Actuator

Sliding pin bolt

Cap

Bleeder valve

Cylinder body

Piston

Piston boot

Sliding pin boot

10.

Bushing

11. Torque member

12.

Outer shim

13.

Outer pad

14. Inner pad

15.

Inner shim

: Apply rubber grease.

: Apply brake fluid.

Refer to

GI-4, "Components"

for symbols not described on the above.

E1FIA0155GB

REAR DISC BRAKE

BR-87

< REMOVAL AND INSTALLATION >

[RHD]

Never spill or splash brake fluid on the disc rotor.

Remove union bolt (1) and then disconnect brake hose (2) from
caliper assembly.

Remove the torque member bolts. Remove the brake caliper
and torque member from the vehicle as an assembly.

Remove sliding pin bolts and the brake caliper from torque
member.

CAUTION:

Never drop brake pads and caliper assembly.

Remove disc rotor.

CAUTION:

• Put matching marks on the wheel hub and bearing assem-

bly and the disc rotor before removing the disc rotor.

• Never drop disc rotor.

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. Brake fluid may splash while removing the brake hose.
• After installation, with consult perform EHS/PKB work support. Refer to

PB-56, "Work Procedure"

Install disc rotor.

CAUTION:

Align the matching marks made during removal when reusing the disc rotor.

Install the brake caliper to torque member and install the sliding pin bolts. Tighten to specification.

Install the brake caliper and torque member to the vehicle as an assembly. Install the torque member
bolts.

Assemble the union bolt (A) and the copper sealing washers (1)
to the brake hose and install it as an assembly to the brake cali-
per. Align the brake hose L-pin by aligning it with the brake cali-
per hole, and tighten the union bolt (A) to the specified torque.

CAUTION:

Never reuse copper sealing washers.

Refill with new brake fluid and perform the air bleeding. Refer to

BR-12, "Bleeding Brake System"

CAUTION:

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

Check that no drag feel is present for the rear disc brake.

Install tires.

BRAKE CALIPER ASSEMBLY : Disassembly and Assembly

INFOID:0000000010471476

DISASSEMBLY

NOTE:
Never remove the torque member, brake pads, shims, shim cover and pad retainers disassembling and
assembling the cylinder body.

Remove the sliding pin bolts and remove the cylinder body from the torque member.

CAUTION:

Never drop pads, shims, shim cover and pad retainers from torque member.

Remove sliding pin boots from torque member.

Remove bushing from sliding pin bolt.

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BR-88

< REMOVAL AND INSTALLATION >

[RHD]

REAR DISC BRAKE

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

CAUTION:

Never get fingers caught in the piston.

Remove piston seal from cylinder body using suitable tool.

CAUTION:

Be careful not to damage a cylinder inner wall.

ASSEMBLY

Apply polyglycol ether based lubricant to piston seal (1), and
install to cylinder body.

CAUTION:

Never reuse piston seal.

Apply rubber grease to piston boot (1). Cover the piston (2) end
with the piston boot, and then install cylinder side lip on the pis-
ton boot securely into the groove on cylinder body.

CAUTION:

Never reuse piston boot.

BRD0041D

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REAR DISC BRAKE

BR-89

< REMOVAL AND INSTALLATION >

[RHD]

Apply brake fluid to piston (1). Push piston into cylinder body by
hand and push piston boot (2) piston side lip into the piston
groove.

CAUTION:

Press the piston evenly and vary the pressing point to pre-
vent cylinder inner wall from being rubbed.

Apply polyglycol ether based lubricant to bushing, install bush-
ing to sliding pin bolt.

Apply rubber grease to the sliding pin bolts and the sliding pin
boots, install sliding pin boot to torque member.

Install the cylinder body to the torque member and tighten the
sliding pin bolts to the specified torque.

BRAKE CALIPER ASSEMBLY : Inspection and Adjustment

INFOID:0000000010471477

INSPECTION AFTER DISASSEMBLY

Cylinder Body

Check the inner wall of the cylinder for rust, wear, cracks or damage. Replace the cylinder if any abnormal
condition is detected.

CAUTION:

Always clean with new brake fluid. Never clean with mineral oil such as gasoline and light oil.

Torque Member

Check the torque member for rust, wear, cracks or damage. Replace the member if any abnormal condition is
detected.

Piston

Check the piston for rust, wear, cracks or damage. Replace the piston if any abnormal condition is detected.

CAUTION:

A piston sliding surface is plated. Never polish with sandpaper.

Sliding Pin Bolt and Sliding Pin Boot

Check the sliding pin bolts and sliding pin boots for rust, wear, cracks or damage. Replace the parts if any
abnormal condition is detected.

ADJUSTMENT AFTER INSTALLATION

Brake Burnishing Procedure

Burnish contact surfaces between disc rotors and pads according to the following procedure after refinishing
or replacing disc rotor, or if a soft pedal occurs at very low mileage.

CAUTION:

• Be careful of vehicle speed because the brake does not operate easily until pad and disc rotor are

securely fitted.

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

Drive vehicle on straight, flat road.

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

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

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

JPFIA0041ZZ

BR-90

< SERVICE DATA AND SPECIFICATIONS (SDS)

[RHD]

SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

General Specifications

INFOID:0000000010464132

Unit: mm (in.)

Brake Pedal

INFOID:0000000010464133

Unit: mm (in.)

Brake Booster

INFOID:0000000010464134

Vacuum type

Unit: mm (in.)

Front Disc Brake

INFOID:0000000010464135

Unit: mm (in)

Rear Disc Brake

INFOID:0000000010464136

Unit: mm (in)

Front brake

Cylinder bore diameter

60.33 (2.375)

Pad length

width

thickness

123.6

47.5

11.0 (4.87

1.870

0.433)

Rotor outer diameter

thickness

296

26.0 (11.65

1.024)

Rear brake

Cylinder bore diameter

38.1 (1.5)

Pad length

width

thickness

83.0

31.9

8.5 (3.268

1.256

0.335)

Rotor outer diameter

thickness

292

16 (11.50

0.630)

Master cylinder

Cylinder bore diameter

23.8 (15/16)

Control valve

Valve type

Electric brake force distribution

Brake booster

Diaphragm diameter

275 (10.8)

Recommended brake fluid

DOT 4

Brake pedal height (H

)

175.9 – 185.9 (6.93 – 7.32)

Clearance (C) between bracket and ASCD cancel switch/stop lamp switch threaded end

0.20 – 1.96 (0.0079 – 0.0772)

Brake pedal play (A)

—

Depressed brake pedal height (H

)

[Depressing 490 N (50 kg, 110 lb) while turning the engine ON]

135.1 (5.32)

Output rod length (A)

30.5 (1.201)

Input rod length (B)

150.7 – 157.7 (5.93 – 6.21)

Item

Limit

Brake pad

Wear limit thickness

2.0 (0.079)

Disc brake rotor

Wear limit thickness

24.0 (0.945)

Thickness variation (measured at 8 positions)

0.020 (0.0008)

Runout limit (with it attached to the vehicle)

0.035 (0.0014)

Item

Limit

Brake pad

Wear limit thickness

1.5 (0.059)

Disc brake rotor

Wear limit thickness

14.0 (0.551)

Thickness variation (measured at 8 positions)

0.020 (0.0008)

Runout limit (with it attached to the vehicle)

0.070 (0.0028)

Content .. 4 5 6