Qashqai J11. Brake system — part 6
BR-82
< REMOVAL AND INSTALLATION >
[RHD]
FRONT DISC BRAKE
5.
Remove piston seal from cylinder body using suitable tool.
CAUTION:
Be careful not to damage a cylinder inner wall.
ASSEMBLY
1.
Apply rubber grease to piston seal (1), and install to cylinder
body.
CAUTION:
Never reuse piston seal.
2.
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.
3.
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.
4.
Apply rubber grease to bushing, install bushing to sliding pin.
5.
Apply rubber grease to sliding pins and sliding pin boots, install
sliding pins and sliding pin boots to torque member.
6.
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.
JPFIA0038ZZ
JPFIA0039ZZ
JPFIA0040ZZ
JPFIA0034ZZ
FRONT DISC BRAKE
BR-83
< REMOVAL AND INSTALLATION >
[RHD]
C
D
E
G
H
I
J
K
L
M
A
B
BR
N
O
P
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.
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 the brake.
4.
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
.
1.
Remove tires.
1.
Bolt
2.
Actuator
3.
Sliding pin bolt
4.
Cap
5.
Bleeder valve
6.
Cylinder body
7.
Piston
8.
Piston boot
9.
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
for symbols not described on the above.
E1FIA0155GB
REAR DISC BRAKE
BR-85
< REMOVAL AND INSTALLATION >
[RHD]
C
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A
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BR
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2.
Loosen the upper sliding pin bolt and remove the lower sliding pin bolt.
3.
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.
4.
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
.
1.
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.
2.
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.
3.
Install the brake pads to the torque member.
4.
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.
5.
Using the upper sliding pin bolt as a pivot, swing the brake caliper up to the torque member.
6.
Install the lower sliding pin bolts. Tighten all sliding pin bolts to specification. Refer to
7.
Depress the brake pedal several times and verify that drag does not exist.
8.
Install the tires
9.
Check brake fluid level and refill as necessary. Refer to
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.
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 the brake.
4.
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
.
1.
Remove tires.
2.
Secure the disc brake rotor using wheel nuts.
3.
Drain brake fluid. Refer to
CAUTION:
1.
Bolt
2.
Actuator
3.
Sliding pin bolt
4.
Cap
5.
Bleeder valve
6.
Cylinder body
7.
Piston
8.
Piston boot
9.
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
for symbols not described on the above.
E1FIA0155GB
REAR DISC BRAKE
BR-87
< REMOVAL AND INSTALLATION >
[RHD]
C
D
E
G
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A
B
BR
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Never spill or splash brake fluid on the disc rotor.
4.
Remove union bolt (1) and then disconnect brake hose (2) from
caliper assembly.
5.
Remove the torque member bolts. Remove the brake caliper
and torque member from the vehicle as an assembly.
6.
Remove sliding pin bolts and the brake caliper from torque
member.
CAUTION:
Never drop brake pads and caliper assembly.
7.
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
.
1.
Install disc rotor.
CAUTION:
Align the matching marks made during removal when reusing the disc rotor.
2.
Install the brake caliper to torque member and install the sliding pin bolts. Tighten to specification.
3.
Install the brake caliper and torque member to the vehicle as an assembly. Install the torque member
bolts.
4.
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.
5.
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.
6.
Check that no drag feel is present for the rear disc brake.
7.
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.
1.
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.
2.
Remove sliding pin boots from torque member.
3.
Remove bushing from sliding pin bolt.
JPFIA0036ZZ
AWFIA0795ZZ
BR-88
< REMOVAL AND INSTALLATION >
[RHD]
REAR DISC BRAKE
4.
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.
5.
Remove piston seal from cylinder body using suitable tool.
CAUTION:
Be careful not to damage a cylinder inner wall.
ASSEMBLY
1.
Apply polyglycol ether based lubricant to piston seal (1), and
install to cylinder body.
CAUTION:
Never reuse piston seal.
2.
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
JPFIA0038ZZ
JPFIA0039ZZ
JPFIA0040ZZ
REAR DISC BRAKE
BR-89
< REMOVAL AND INSTALLATION >
[RHD]
C
D
E
G
H
I
J
K
L
M
A
B
BR
N
O
P
3.
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.
4.
Apply polyglycol ether based lubricant to bushing, install bush-
ing to sliding pin bolt.
5.
Apply rubber grease to the sliding pin bolts and the sliding pin
boots, install sliding pin boot to torque member.
6.
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.
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 the brake.
4.
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)
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
1
)
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
2
)
[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)
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