Nissan Note E12. Instruction — part 69
BR-12
< PERIODIC MAINTENANCE >
BRAKE FLUID
1. Check that there is no foreign material in the reservoir tank, and
refill with new brake fluid. Refer to
2. Loosen the bleeder valve, slowly depress the brake pedal to the
full stroke, and then release the pedal. Repeat this operation at
intervals of 2 or 3 seconds until new brake fluid is discharged.
Then close the bleeder valve with the brake pedal depressed.
Repeat the same work on each wheel.
3. Perform the air bleeding procedure. Refer to
.
Bleeding Brake System
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CAUTION:
• Turn the ignition switch OFF and disconnect ABS actuator and electric unit (control unit) or battery
negative terminal before performing the work.
• Monitor the fluid level in the reservoir tank while performing the air bleeding.
• Do not 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.
• Always use new brake fluid for refilling. Do not reuse drained brake fluid.
• Do not allow foreign matter (e.g. dust) and oils other than brake fluid to enter the reservoir tank.
1. Connect a vinyl tube to the bleeder valve.
2. Fully depress the brake pedal 4 to 5 times.
3. Loosen the bleeder valve and bleed air with the brake pedal depressed, and then quickly tighten the
bleeder valve.
4. Repeat steps 2 and 3 until all of the air is out of the brake line.
5. Tighten the bleeder valve to the specified torque.
• Front disc brake: Refer to
BR-35, "BRAKE CALIPER ASSEMBLY : Exploded View"
.
6. Perform steps 1 to 5 in the following order: Front (RH) brake
→ front (LH) brake → rear (RH) brake → rear
(LH) brake.
7. Check that the fluid level in the reservoir tank is within the specified range after air bleeding. Refer to
8. Add brake fluid as necessary to keep the brake fluid level within the specified range. Refer to
9. Inspect the brake pedal height and play. Adjust it if the measurement value is not the standard. Refer to
BR-8, "Inspection and Adjustment"
PFIA0403J
BRAKE MASTER CYLINDER
BR-13
< PERIODIC MAINTENANCE >
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BRAKE MASTER CYLINDER
Inspection
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FLUID LEAKS
Check for brake fluid leaks from the master cylinder, reservoir tank, and brake tube connections.
BR-14
< PERIODIC MAINTENANCE >
BRAKE BOOSTER
BRAKE BOOSTER
Inspection
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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. Then
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.
2. 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.
FRONT DISC BRAKE
BR-15
< PERIODIC MAINTENANCE >
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FRONT DISC BRAKE
BRAKE PAD
BRAKE PAD : Inspection
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INSPECTION
Check brake pad wear thickness from an inspection hole on cylinder
body. Check using a scale if necessary.
BRAKE PAD : Brake Burnishing
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BRAKE BURNISHING
Burnish contact surfaces between disc brake rotor and brake pads according to the following procedure after
refinishing disc brake rotors, replacing disc brake rotors, replacing brake pads, or if a soft pedal occurs at very
low mileage:
CAUTION:
• Be careful of vehicle speed because the brake pedal does not operate firmly/securely until pads and
disc brake rotor are securely seated.
• 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 pedal for a few minutes to cool the brakes.
4. Repeat steps 1 to 3 until pad and disc brake rotor are securely seated.
DISC ROTOR
DISC ROTOR : Inspection
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INSPECTION
Appearance
Check surface of disc brake rotor for uneven wear, cracks, and serious damage. Replace it if necessary. Refer
to
BR-15, "DISC ROTOR : Inspection"
Runout
1. Secure the disc brake rotor to the wheel hub with wheel nuts (2
points at least).
2. Check the wheel bearing axial end play before the inspection.
.
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 brake rotor-to-wheel hub installation position by one
hole at a time if the runout exceeds the limit value.
5. Refinish or replace the disc brake rotor if the runout is outside the limit even after performing the above
operation.
Wear thickness
: Refer to
.
BRA0010D
Runout
: Refer to
BRA0013D
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