Nissan Juke (2012 year). Service Repair Manual — part 21
BRAKE BOOSTER
BR-13
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BRAKE BOOSTER
Inspection
INFOID:0000000007579941
OPERATION
Depress the brake pedal several times at 5-second intervals with the engine stopped. Start the engine with the
brake pedal fully depressed. Check that the clearance between brake pedal and dash lower panel decreases.
NOTE:
A slight impact with a small click may be felt on the pedal when the brake pedal is fully depressed. This is a
normal phenomenon due to the brake system operation.
AIR TIGHT
1.
Run the engine at idle for 1 minute to apply vacuum to the brake booster, and stop the engine.
2.
Depress the brake pedal several times at 5-second intervals until the accumulated vacuum is released to
atmospheric pressure. Check that the clearance between brake pedal and dash lower panel gradually
increases each time the brake pedal is depressed when performing this operation.
3.
Depress the brake pedal with the engine running. Then stop the engine while holding down the brake
pedal. Check that the brake pedal stroke does not change after holding down the brake pedal for 30 sec-
onds or more.
Revision: 2011 October
2012 JUKE
BR-14
< PERIODIC MAINTENANCE >
FRONT DISC BRAKE
FRONT DISC BRAKE
BRAKE PAD
BRAKE PAD : Inspection and Adjustment
INFOID:0000000007579942
INSPECTION
Check brake pad wear thickness from an inspection hole on cylinder
body. Check using a scale if necessary.
ADJUSTMENT
Burnish contact surfaces between disc rotor and brake pads according to the following procedure after refin-
ishing or replacing brake pads, or if a soft pedal occurs at very low mileage.
CAUTION:
• Be careful of vehicle speed because the brake does not operate firmly/securely until pads 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.
DISC ROTOR
DISC ROTOR : Inspection and Adjustment
INFOID:0000000007579943
INSPECTION
Appearance
Check surface of disc rotor for uneven wear, cracks, and serious damage. Replace it if necessary. Refer to
FAX-8, "Removal and Installation"
.
Runout
1.
Fix the disc rotor to the wheel hub and bearing assembly with
wheel nuts (2 points at least).
2.
Check the wheel bearing axial end play before the inspection.
Refer to
.
3.
Inspect the runout with a dial indicator to measure at 10 mm
(0.39 in) inside the disc edge.
4.
Find the installation position that has a minimum runout by shift-
ing the disc rotor-to-wheel hub and bearing assembly installation
position by one hole at a time if the runout exceeds the limit value.
• Refinish the disc rotor if the runout is outside the limit even after performing the above operation. [When
refinishing, use the Pro-Cut PEM On-Car brake Lathe (Tool No. 38-PFM90.5) or equivalent.]
CAUTION:
• Check in advance that the thickness of the disc rotor is wear thickness + 0.3 mm (0.012 in) or more.
Wear thickness
: Refer to
.
BRA0010D
Runout (with it attached
to the vehicle)
: Refer to
.
SBR019B
Revision: 2011 October
2012 JUKE
FRONT DISC BRAKE
BR-15
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• If the thickness is less than wear thickness + 0.3 mm (0.012 in), replace the disc rotor. Refer to
Thickness
Check the thickness of the disc rotor using a micrometer. Replace
the disc rotor if the thickness is below the wear limit. Refer to
ADJUSTMENT
Burnish contact surfaces between disc rotors and brake pads according to the following procedure after refin-
ishing 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 firmly/securely 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.
Wear thickness
: Refer to
Wear thickness
: Refer to
.
SBR020B
Revision: 2011 October
2012 JUKE
BR-16
< PERIODIC MAINTENANCE >
REAR DISC BRAKE
REAR DISC BRAKE
BRAKE PAD
BRAKE PAD : Inspection and Adjustment
INFOID:0000000007579944
INSPECTION
Check brake pad wear thickness from an inspection hole on cylinder
body. Check using a scale if necessary.
ADJUSTMENT
Burnish contact surfaces between disc rotor and brake pads according to the following procedure after refin-
ishing or replacing brake pads, or if a soft pedal occurs at very low mileage.
CAUTION:
• Be careful of vehicle speed because the brake does not operate firmly/securely until pads 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.
DISC ROTOR
DISC ROTOR : Inspection and Adjustment
INFOID:0000000007579945
INSPECTION
Appearance
Check surface of disc rotor for uneven wear, cracks, and serious damage. Replace it if necessary.
• 2WD: Refer to
RAX-5, "Removal and Installation"
• AWD: Refer to
RAX-14, "Removal and Installation"
Runout
1.
Fix the disc rotor to the wheel hub and bearing assembly with
wheel nuts (2 points at least).
2.
Check the wheel bearing axial end play before the inspection.
• 2WD: Refer to
.
• AWD: Refer to
.
3.
Inspect the runout with a dial indicator to measure at 10 mm
(0.39 in) inside the disc edge.
4.
Find the installation position that has a minimum runout by shift-
ing the disc rotor-to-wheel hub and bearing assembly installation position by one hole at a time if the
runout exceeds the limit value.
• Refinish the disc rotor if the runout is outside the limit even after performing the above operation. [When
refinishing, use the Pro-Cut PEM On-Car brake Lathe (Tool No. 38-PFM90.5) or equivalent.]
CAUTION:
Wear thickness
: Refer to
BRA0010D
Runout (with it attached
to the vehicle)
: Refer to
.
SBR019B
Revision: 2011 October
2012 JUKE
REAR DISC BRAKE
BR-17
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• Check in advance that the thickness of the disc rotor is wear thickness + 0.3 mm (0.012 in) or more.
• If the thickness is less than wear thickness + 0.3 mm (0.012 in), replace the disc rotor.
- 2WD: Refer to
RAX-5, "Removal and Installation"
.
- AWD: Refer to
RAX-14, "Removal and Installation"
Thickness
Check the thickness of the disc rotor using a micrometer. Replace
the disc rotor if the thickness is below the wear limit.
• 2WD: Refer to
RAX-5, "Removal and Installation"
• AWD: Refer to
RAX-14, "Removal and Installation"
.
ADJUSTMENT
Burnish contact surfaces between disc rotors and brake pads according to the following procedure after refin-
ishing 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 firmly/securely 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.
Wear thickness
: Refer to
.
Wear thickness
: Refer to
.
SBR020B
Revision: 2011 October
2012 JUKE
BR-18
< REMOVAL AND INSTALLATION >
BRAKE PEDAL
REMOVAL AND INSTALLATION
BRAKE PEDAL
Exploded View
INFOID:0000000007579946
Removal and Installation
INFOID:0000000007579947
REMOVAL
1.
Remove instrument lower panel. Refer to
IP-12, "Removal and Installation"
2.
Disconnect the stop lamp switch and the brake pedal position switch harness connectors.
3.
Rotate the stop lamp switch and the brake pedal position switch
(1) counter clockwise to remove.
4.
Disconnect the accelerator pedal harness connector and har-
ness clip.
1.
Clevis pin
2.
Brake pedal assembly
3.
Brake pedal pad
4.
Brake pedal position switch
5.
Clip
6.
Stop lamp switch
7.
Snap pin
: Apply multi-purpose grease.
: N·m (kg-m, ft-lb)
JSFIA0457GB
JPFIA0815ZZ
Revision: 2011 October
2012 JUKE
BRAKE PEDAL
BR-19
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5.
Remove snap pin (1) and clevis pin (2) from clevis (3) of brake
booster.
6.
Remove the steering member stay (1).
7.
Remove the brake pedal assembly.
CAUTION:
Hold the brake booster and master cylinder assembly so as
not to drop out or contact them other parts.
8.
Remove accelerator pedal from brake pedal assembly. Refer to
ACC-3, "Removal and Installation"
9.
Perform inspection after removal. Refer to
INSTALLATION
Note the following, and install in the reverse order of removal.
• Apply the multi-purpose grease to the clevis pin and the mating faces. (Not necessary if grease has been
already applied)
NOTE:
The clevis pin may be inserted in either direction.
• Perform adjustment after installation. Refer to
BR-19, "Inspection and Adjustment"
.
Inspection and Adjustment
INFOID:0000000007579948
INSPECTION AFTER REMOVAL
• Check for the following items and replace the brake pedal assembly if necessary.
- Check the brake pedal upper rivet (made by aluminum) (A) for
deformation.
- Check the brake pedal for bend, damage, and cracks on the
welded parts.
- Check the lapping length (D) of sub-bracket (B) and slide plate (C).
• Check clevis pin and plastic stopper (A) for damage and deforma-
tion. If any is found, replace clevis pin.
JPFIA0816ZZ
JSFIA0458ZZ
D
: 6.5 mm (0.256 in) or more
JSFIA0459ZZ
PFIA0756J
Revision: 2011 October
2012 JUKE
BR-20
< REMOVAL AND INSTALLATION >
BRAKE PEDAL
ADJUSTMENT AFTER INSTALLATION
• Adjust each item of brake pedal after installing the brake pedal assembly to the vehicle. Refer to
.
• Perform the release position learning of the accelerator pedal. Refer to
.
Revision: 2011 October
2012 JUKE
BRAKE PIPING
BR-21
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BRAKE PIPING
FRONT
FRONT : Exploded View
INFOID:0000000007579949
FRONT : Hydraulic Piping
INFOID:0000000007579950
2WD
1.
Brake tube
2.
ABS actuator and electric unit (con-
trol unit)
3.
Connector
4.
Connector bracket
5.
Master cylinder assembly
6.
Brake booster
7.
Lock plate
8.
Brake hose
9.
Union bolt
10. Copper washer
A.
To rear brake tube
: N·m (kg-m, ft-lb)
: N·m (kg-m, in-lb)
: Always replace after every disassembly.
: Indicates that the part is connected at points with same symbol in actual vehicle.
JSFIA0638GB
Revision: 2011 October
2012 JUKE
BR-22
< REMOVAL AND INSTALLATION >
BRAKE PIPING
AWD
FRONT : Removal and Installation
INFOID:0000000007579951
REMOVAL
1.
ABS actuator and electric unit (con-
trol unit)
2.
Front disc brake
3.
Master cylinder assembly
4.
Brake booster
5.
Connector
6.
Rear disc brake
A.
Brake tube
B.
Brake hose
: Flare nut
: Union bolt
JPFIA0650ZZ
1.
ABS actuator and electric unit (con-
trol unit)
2.
Front disc brake
3.
Master cylinder assembly
4.
Brake booster
5.
Connector
6.
Rear disc brake
A.
Brake tube
B.
Brake hose
: Flare nut
: Union bolt
JSFIA0639ZZ
Revision: 2011 October
2012 JUKE
BRAKE PIPING
BR-23
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CAUTION:
• Never spill or splash brake fluid on painted surfaces. Brake fluid may seriously damage paint. Wipe it
off immediately and wash with water if it gets on a painted surface. For brake component parts,
never wash them with water.
• Never depress the brake pedal while removing the brake hose or brake tube. If this is not complied
with, brake fluid may splash.
1.
Remove tires with power tool.
2.
Drain brake fluid. Refer to
3.
Loosen the flare nut (1) with a flare nut wrench (A) and separate
the brake tube (2) from the brake hose (3).
CAUTION:
• Never scratch the flare nut and the brake tube.
• Never bend sharply, twist or strongly pull out the brake
hoses and tubes.
• Cover open end of brake tubes and hoses when discon-
necting to prevent entrance of dirt.
4.
Remove the union bolt (1) and copper washers (2), and remove
the brake hose (3) from the brake caliper assembly.
5.
Remove the lock plate (4) and remove the brake hose.
INSTALLATION
CAUTION:
• Never spill or splash brake fluid on painted surfaces. Brake fluid may seriously damage paint. Wipe it
off immediately and wash with water if it gets on a painted surface. For brake component parts,
never wash them with water.
• Never depress the brake pedal while removing the brake hose or brake tube. If this is not complied
with, brake fluid may splash.
1.
Assemble the union bolt (1) and the copper washer (2) to the
brake hose.
CAUTION:
Never reuse the copper washer.
2.
Align the brake hose pin (A) with the brake caliper assembly
projection (B), and tighten the union bolt (1) to the specified
torque.
JPFIA0847ZZ
JPFIA0819ZZ
JPFIA0820ZZ
Revision: 2011 October
2012 JUKE
BR-24
< REMOVAL AND INSTALLATION >
BRAKE PIPING
3.
Install the brake tube (2) to the brake hose (1), temporarily
tighten the flare nut (3) by hand until it does not rotate further,
and fix the brake hose to the bracket (5) with the lock plate (4).
CAUTION:
Check that all brake hoses and brake tubes are not twisted
and bent.
4.
Tighten the flare nut to the specified torque with a crowfoot (A)
and torque wrench (B).
CAUTION:
Never scratch the flare nut and the brake tube.
5.
Refill with new brake fluid and perform the air bleeding. Refer to
BR-11, "Bleeding Brake System"
.
CAUTION:
Never reuse drained brake fluid.
6.
Install tires. Refer to
WT-43, "Removal and Installation"
7.
Perform inspection after installation. Refer to
.
FRONT : Inspection
INFOID:0000000007579952
INSPECTION AFTER INSTALLATION
1.
Check the brake hoses and tubes for the following: no scratches; no twist and deformation; no interfer-
ence with other components when steering the steering wheel; no looseness at connections.
2.
Depress the brake pedal with a force of 785 N (80 kg, 176 lb) and hold down the pedal for approximately
5 seconds with the engine running. Check for any fluid leakage.
CAUTION:
Retighten the applicable connection to the specified torque and repair any abnormal (damaged,
worn or deformed) part if any brake fluid leakage is present.
REAR
REAR : Exploded View
INFOID:0000000007579953
2WD
JPFIA0821ZZ
JPFIA0001ZZ
Revision: 2011 October
2012 JUKE
BRAKE PIPING
BR-25
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AWD
1.
Brake tube
2.
Brake hose A
3.
Lock plate
4.
Brake hose bracket
5.
Union bolt
6.
Brake hose B
7.
Copper washer
A.
To connector
: N·m (kg-m, ft-lb)
: N·m (kg-m, in-lb)
: Always replace after every disassembly.
: Indicates that the part is connected at points with same symbol in actual vehicle.
JSFIA0640GB
Revision: 2011 October
2012 JUKE
BR-26
< REMOVAL AND INSTALLATION >
BRAKE PIPING
REAR : Hydraulic Piping
INFOID:0000000007579954
2WD
1.
Brake tube
2.
Brake hose A
3.
Lock plate
4.
Brake hose bracket
5.
Brake hose B
6.
Union bolt
7.
Copper washer
A.
To connector
: N·m (kg-m, ft-lb)
: N·m (kg-m, in-lb)
: Always replace after every disassembly.
: Indicates that the part is connected at points with same symbol in actual vehicle.
JSFIA0468GB
Revision: 2011 October
2012 JUKE
BRAKE PIPING
BR-27
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AWD
REAR : Removal and Installation
INFOID:0000000007579955
REMOVAL
1.
ABS actuator and electric unit (con-
trol unit)
2.
Front disc brake
3.
Master cylinder assembly
4.
Brake booster
5.
Connector
6.
Rear disc brake
A.
Brake tube
B.
Brake hose
: Flare nut
: Union bolt
JPFIA0650ZZ
1.
ABS actuator and electric unit (con-
trol unit)
2.
Front disc brake
3.
Master cylinder assembly
4.
Brake booster
5.
Connector
6.
Rear disc brake
A.
Brake tube
B.
Brake hose
: Flare nut
: Union bolt
JSFIA0639ZZ
Revision: 2011 October
2012 JUKE
BR-28
< REMOVAL AND INSTALLATION >
BRAKE PIPING
2WD
CAUTION:
• Never spill or splash brake fluid on painted surfaces. Brake fluid may seriously damage paint. Wipe it
off immediately and wash with water if it gets on a painted surface. For brake component parts,
never wash them with water.
• Never depress the brake pedal while removing the brake hose or brake tube. If this is not complied
with, brake fluid may splash.
1.
Remove tires with power tool.
2.
Drain brake fluid. Refer to
.
3.
Loosen the flare nut (1) with a flare nut wrench (A) and separate
the brake tube (2) from the brake hose A (3).
CAUTION:
• Never scratch the flare nut and the brake tube.
• Never bend sharply, twist or strongly pull out the brake
hoses and tubes.
• Cover open end of brake tubes and hoses when discon-
necting to prevent entrance of dirt.
4.
Remove the lock plate (4) and remove the brake hose A.
5.
Loosen the flare nut (1) with a flare nut wrench (A) and separate
the brake tube (2) from the hose B (3).
CAUTION:
• Never scratch the flare nut and the brake tube.
• Never bend sharply, twist or strongly pull out the brake
hoses and tubes.
• Cover open end of brake tubes and hoses when discon-
necting to prevent entrance of dirt.
6.
Remove the lock plate (4) from brake hose bracket (5).
7.
Remove the union bolt (1) and copper washers (2), and remove
the brake hose B (3) from the brake caliper assembly.
AWD
CAUTION:
• Never spill or splash brake fluid on painted surfaces. Brake fluid may seriously damage paint. Wipe it
off immediately and wash with water if it gets on a painted surface. For brake component parts,
never wash them with water.
• Never depress the brake pedal while removing the brake hose or brake tube. If this is not complied
with, brake fluid may splash.
1.
Remove tires with power tool.
2.
Drain brake fluid. Refer to
.
JPFIA0848ZZ
JSFIA0470ZZ
JSFIA0471ZZ
Revision: 2011 October
2012 JUKE
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