2008 NISSAN LATIO air bleeding

BR-1
BRAKES
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SECTION BR
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CONTENTS
BRAKE SYSTEM
SERVICE INFORMATION ............................2
PRECAUTIONS ...................................................2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
2
Precaution for Brake System ....................................2
PREPARATION ...................................................3
Commercial Service Tool ..........................................3
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING .............................
4
NVH Troubleshooting Chart ......................................4
BRAKE PEDAL ...................................................5
Inspection and Adjustment ........................................5
Removal and Installation ...........................................6
BRAKE FLUID .....................................................8
On Board Inspection .................................................8
Drain and Refill ..........................................................8
Bleeding Brake System .............................................8
BRAKE TUBE AND HOSE ................................10
Hydraulic Circuit ......................................................10
Front Brake Tube and Hose ....................................10
Rear Brake Tube and Hose ....................................11
Inspection After Installation .....................................11
BRAKE MASTER CYLINDER ............................13
On-Board Inspection ...............................................13
Removal and Installation .........................................13
Disassembly and Assembly ....................................13
BRAKE BOOSTER ...........................................18
On Board Inspection ................................................18
Removal and Installation .........................................18
VACUUM LINES ...............................................21
Component ..............................................................21
Removal and Installation .........................................21
Inspection ................................................................21
FRONT DISC BRAKE .......................................23
On Board Inspection ................................................23
Component ..............................................................23
Removal and Installation of Brake Pad ...................24
Removal and Installation of Brake Caliper Assem-
bly ............................................................................
25
Disassembly and Assembly of Brake Caliper As-
sembly .....................................................................
25
Brake Burnishing Procedure ....................................28
REAR DRUM BRAKE .......................................29
Component ..............................................................29
Removal and Installation of Drum Brake Assembly
....
29
Removal and Installation of Wheel Cylinder ............32
Disassembly and Assembly of Wheel Cylinder .......32
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................
33
General Specification ..............................................33
Brake Pedal .............................................................33
Check Valve ............................................................33
Brake Booster ..........................................................33
Front Disc Brake ......................................................33
Rear Drum Brake .....................................................34

BR-8
< SERVICE INFORMATION >
BRAKE FLUID
BRAKE FLUID
On Board InspectionINFOID:0000000001703781
CHECKING BRAKE FLUID LEVEL
• Make sure the fluid level in the reservoir tank is within the standard
(between MAX and MIN lines).
• Visually check around the reservoir tank for fluid leakage.
• If fluid level is excessively low, check brake system for fluid leak-
age.
• Release parking brake lever and see if brake warning lamp goes
off. If not, check brake system for fluid leakage.
Drain and RefillINFOID:0000000001703782
CAUTION:
• Refill using recommended brake fluid. Refer to MA-10
.
• Never reuse drained brake fluid.
• Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is
splashed on painted areas, immediately wipe them with cloth and wash it away with water.
• Before working, disconnect connectors of ABS actuator and electric unit (control unit) or battery
cable from the negative terminal.
1. Connect a vinyl tube to bleed valve.
2. Depress the brake pedal, loosen the bleed valve, and gradually
remove the brake fluid.
3. Clean inside of reservoir tank, and refill with new brake fluid.
4. Loosen bleed valve, depress brake pedal slowly to full stroke
and then release it. Repeat the procedure every 2 or 3 seconds
until the new brake fluid comes out, then close the bleed valve
while depressing the brake pedal. Repeat the same procedure
for each wheel.
5. Bleed air. Refer to BR-8, "
Bleeding Brake System" .
Bleeding Brake SystemINFOID:0000000001703783
CAUTION:
• While bleeding, pay attention to master cylinder fluid level.
• Before working, disconnect connectors of ABS actuator and electric unit (control unit) or the battery
cable from the negative terminal.
1. Connect a vinyl tube to the rear right bleed valve.
2. Fully depress brake pedal 4 to 5 times.
SFIA3067E
WFIA0512E
WFIA0513E

BRAKE TUBE AND HOSE
BR-11
< SERVICE INFORMATION >
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1. Drain brake fluid. Refer to BR-8, "Drain and Refill" .
2. Using a flare nut wrench, remove brake tube from brake hose.
3. Remove union bolt, and remove brake hose from caliper assem-
bly.
4. Remove lock plate, and remove brake hose from vehicle.
INSTALLATION
1. Assemble union bolt and copper washers to brake hose.
2. Position the L-shape metal fitting of the brake hose to the brake
caliper assembly positioning hole.
3. Tighten union bolt to the specified torque. Refer to BR-10,
"Hydraulic Circuit" .
4. Connect brake hose to brake tube on vehicle, and temporarily
tighten flare nut by hand as much as possible.
5. Secure it with lock plate.
6. Tighten flare nut to the specified torque with a flare nut torque
wrench. Refer to BR-10, "
Hydraulic Circuit" .
7. Install brake hose to vehicle, and tighten nuts to the specified
torque.
8. Bleed air from brake system. Refer to BR-8, "
Bleeding Brake System" .
Rear Brake Tube and HoseINFOID:0000000001703786
REMOVAL
1. Drain brake fluid. Refer to BR-8, "Drain and Refill" .
2. Using a flare nut wrench, remove brake tube from brake hose.
3. Remove lock plate, and remove brake hose from vehicle.
INSTALLATION
1. Connect brake hose to brake tube on vehicle, and temporarily tighten flare nut by hand as much as possi-
ble.
2. Secure it to bracket with lock plate.
3. Tighten flare nut to the specified torque with a flare nut torque wrench. Refer to BR-10, "
Hydraulic Circuit"
.
4. Bleed air from brake system. Refer to BR-8, "
Bleeding Brake System" .
Inspection After InstallationINFOID:0000000001703787
CAUTION:
• Always disassemble the parts and retighten their fittings, if a brake fluid leak is detected. Replace
applicable part with a new one, if damaged part is detected.
• If leak is detected at the connections, retighten it or replace the damaged part.
S F I A 111 8 E
SFIA1137E
SFIA1120E

BRAKE MASTER CYLINDER
BR-13
< SERVICE INFORMATION >
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BRAKE MASTER CYLINDER
On-Board InspectionINFOID:0000000001703788
LEAK INSPECTION
• Check for leaking in a master cylinder installation surface, a reservoir tank installation surface, and brake
tube connections.
Removal and InstallationINFOID:0000000001703789
CAUTION:
Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is
splashed on painted areas, immediately wipe them with cloth and wash it away with water.
REMOVAL
1. Drain brake fluid. Refer to BR-8, "Drain and Refill" .
2. Remove battery. Refer to SC-6, "
Removal and Installation" .
3. Remove air duct. Refer to EM-16, "
Removal and Installation" .
4. Remove air cleaner. Refer to EM-16, "
Removal and Installation" .
5. Disconnect brake fluid level switch harness connector.
6. Using a flare nut wrench, remove brake tube from master cylinder.
7. Remove master cylinder assembly nuts, and remove master cylinder assembly from vehicle..
INSTALLATION
CAUTION:
• Refill using recommended brake fluid. Refer to MA-10
.
• Never reuse drained brake fluid.
• Check if the rod of primary piston has dust or scratches.
1. Install master cylinder to brake booster assembly, and tighten nuts to the specified torque. Refer to BR-18,
"Removal and Installation".
CAUTION:
• Do not damage or strain rod of primary piston.
• Apply silicone grease for O-ring, primary piston rod and
to inside of booster.
2. Install brake tube to master cylinder, and temporarily tighten the flare nuts on the brake tube to master cyl-
inder by hand.
3. Install brake tube to brake hose, then tighten flare nut to the specified torque using a flare nut torque
wrench. Refer to BR-10, "
Hydraulic Circuit" .
4. Connect brake fluid level switch harness connector.
5. Refill new brake fluid and bleed air. Refer toBR-8, "
Bleeding Brake System" .
Disassembly and AssemblyINFOID:0000000001703790
COMPONENTS
SFIA2614E

BR-20
< SERVICE INFORMATION >
BRAKE BOOSTER
1. Loosen lock nut to adjust input rod length so that the length B
satisfies the specified value.
2. Install spacer to brake booster and tighten spacer nut (brake
booster side) to the specified torque.
3. After adjusting length “B”, temporarily tighten lock nut to install
brake booster assembly to dash panel. At this time, make sure
to install a gasket between brake booster and vehicle.
CAUTION:
Be sure to install the gasket between brake booster and
vehicle.
4. Connect brake pedal to clevis of input rod with the clevis pin and snap pin.
5. Install brake pedal bracket nuts and tighten them to the specified torque.
6. Adjust the height and play of brake pedal. Refer to BR-5, "
Inspection and Adjustment" .
7. Tighten lock nut of input rod to the specified torque. Refer to "COMPONENTS" .
8. Install vacuum hose into brake booster. Refer to BR-21, "
Removal and Installation" .
9. Bleed air from brake system. Refer to BR-8, "
Bleeding Brake System" . Length “B” : 154 - 161 mm (6.06 - 6.34 in)
SGIA0060E

FRONT DISC BRAKE
BR-25
< SERVICE INFORMATION >
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Removal and Installation of Brake Caliper AssemblyINFOID:0000000001703799
REMOVAL
1. Remove tires from vehicle.
2. Secure disc rotor using wheel nuts.
CAUTION:
Put matching marks on wheel hub assembly and disc rotor, if it is necessary to remove disc rotor.
3. Drain brake fluid. Refer to BR-8, "
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.
INSTALLATION
1. Install caliper assembly to vehicle, and tighten mounting bolts to the specified torque. Refer to BR-23,
"Component" .
CAUTION:
Before installing torque member to vehicle, wipe oil and grease on mounting surface of steering
knuckle and torque member.
2. Install brake hose to caliper assembly. Refer to BR-10, "
Hydraulic Circuit" .
3. Refill with new brake fluid and bleed air. Refer to BR-8, "
Bleeding Brake System" .
4. Check front disc brake for drag.
5. Install tires to the vehicle.
Disassembly and Assembly of Brake Caliper AssemblyINFOID:0000000001703800
NOTE:
Do not remove torque member, brake pads, shims and pad retainers, when disassembling or assembling cyl-
inder body.
DISASSEMBLY
1. Remove caliper assembly from vehicle. Refer to BR-25,
"Removal and Installation of Brake Caliper Assembly" .
2. Remove sliding pin bolts from cylinder body, and remove pads,
shims and pad retainers from torque member, if necessary.
CAUTION:
When removing pad retainer from torque member, lift the
pad retainer in the direction shown by arrow, so as not to
deform it.
WFIA0524E
SBR556E

BR-32
< SERVICE INFORMATION >
REAR DRUM BRAKE
5. Connect the parking brake rear cable to the operating lever.
6. Install the shoe assembly. After assembly, be sure that each part is installed properly.
CAUTION:
Do not damage the wheel cylinder piston boot.
7. Install the brake drum.
8. Depress brake pedal for several times (approximately 2, 3 times).
9. Adjust clearance of brake shoe. Refer to PB-4, "
On-Vehicle Service" .
10. Install tires to the vehicle.
Removal and Installation of Wheel CylinderINFOID:0000000001703804
REMOVAL
1. Drain brake fluid. Refer to BR-8, "Drain and Refill" .
2. Remove the rear brake shoe assembly. Refer to BR-29, "
Removal and Installation of Drum Brake Assem-
bly" .
3. Remove the brake tube from the wheel cylinder.
4. Remove bolts on the wheel cylinder, and then remove wheel cylinder from the back plate.
INSTALLATION
• Installation is the reverse order of removal. Tighten bolts to the specified torque. Refer to BR-29, "Compo-
nent" .
• Refill with new brake fluid and bleed air. Refer to BR-8, "
Bleeding Brake System" .
Disassembly and Assembly of Wheel CylinderINFOID:0000000001703805
DISASSEMBLY
1. Remove boots at the right and left of the wheel cylinder, and pull
out the pistons from cylinder.
2. Remove piston from piston cup.
INSPECTION AFTER DISASSEMBLY
Check the pistons, piston cups, and inner wall of the cylinder for wear, corrosion, and damage. If malfunction
is detected, replace it.
ASSEMBLY
CAUTION:
• Do not use Nissan rubber grease (KRE0000010, KRE000001001) during assembly.
• When inserting the piston, be careful not to scratch the cylinder.
1. Apply brake fluid to the piston sliding surface on the wheel cylinder.
2. Apply Genuine Nissan rubber lubricant (KRE1200030) to the
piston cups and piston boots and assemble as shown.
SFIA3077E
SFIA3078E

ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)
BRC-35
< SERVICE INFORMATION >[ABS]
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ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)
Removal and InstallationINFOID:0000000001703852
CAUTION:
• Before servicing, disconnect battery cables.
• To remove brake tube, use flare nut wrench to prevent flare nuts and brake tube from being dam-
aged. To install, use flare nut torque wrench, tighten flare nut to the specified torque. Refer to BR-10,
"Hydraulic Circuit" .
• Do not apply excessive impact to ABS actuator and electric unit (control unit), such as dropping it.
• Do not remove and install actuator by holding harness.
• After work is completed, bleed air from brake tube and hose. Refer to BR-8, "
Bleeding Brake Sys-
tem" .
REMOVAL
1. Disconnect ABS actuator and electric unit (control unit) connector.
2. Loosen brake tube flare nuts, then remove brake tubes from ABS actuator and electric unit (control unit).
3. Remove brake booster hose from engine. Refer to BR-21, "
Removal and Installation" .
4. Remove ABS actuator and electric unit (control unit) bracket mounting bolts.
5. Remove ABS actuator and electric unit (control unit) from vehicle.
INSTALLATION
1. To front right 2. To rear left 3. To rear right
4. To front left 5. From master cylinder primary side 6. From master cylinder secondary
side
7. ABS actuator and electric unit (con-
trol unit)8. Harness connector : Front
Refer to GI section for symbol marks in the figure.
WFIA0506E