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BR-34
< SERVICE INFORMATION >
FRONT DISC BRAKE
Brake Burnishing Procedure
INFOID:0000000005928415
Burnish the new braking surfaces according to following procedure after refinishing or replacing disc rotors,
pads, or if a soft pedal occurs at very low mileage.
CAUTION:
• Be careful of vehicle speed because 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 pedal for a few minutes to cool brake.
4. Repeat steps 1 to 3 until pad and disc rotor are securely fitted.
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REAR DRUM BRAKEBR-35
< SERVICE INFORMATION >
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REAR DRUM BRAKE
ComponentINFOID:0000000005928416
LT 2 0
SFIA3079E
1. Back plate 2. Shoe hold pin 3. Plug
4. Plug 5. Retainer ring 6. Operating lever
7. Adjuster lever 8. Spring 9. Retainer
10. Return spring (lower side) 11. Return spring (upper side) 12. Adjuster spring
13. Adjuster 14. Brake shoe 15. Brake drum
16. Wheel cylinder 17. Spring 18. Piston seal
19. Piston 20. Boot 21. Bleed valve
22. Cap 23. Parking brake rear cable
1: Rubber grease 2: PBC (Poly Butyl Cuprysil) grease or silicone-
based grease : Brake fluid
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2011 Versa
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BR-36
< SERVICE INFORMATION >
REAR DRUM BRAKE
LT23
CAUTION:
• Clean dust on drum and back plate with a vacuum dust collector. Do not blow with compressed air.
• Make sure parking brake lever is released completely.
Removal and Installation of Drum Brake AssemblyINFOID:0000000005928417
REMOVAL
1. Remove rear wheel and tire using power tool.
2. With the parking brake lever released, remove the brak e drum. If it is difficult to remove the brake drum,
remove as follows:
WFIA0536E
1. Back plate 2. Shoe hold pin3. Plug
4. Plug 5. Retainer ring6. Operating lever
7. Adjuster lever 8. Spring9. Retainer
10. Return spring (lower side) 11. Return spring (upper side) 12. Adjuster spring
13. Adjuster 14. Brake shoe15. Brake drum
16. Wheel cylinder 17. Spring18. Piston seal
19. Piston 20. Boot21. Bleed valve
22. Cap 23. Parking brake rear cable
1: Rubber grease 2: PBC (Poly Butyl Cuprysil)
grease or silicone-based
grease : Brake fluid
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REAR DRUM BRAKEBR-37
< SERVICE INFORMATION >
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a. Press up adjuster lever with a wire or equivalent from plug hole (plug hole at the side of wheel cylinder) on the back plate as
shown. Turn frame of adjuster assembly with a flat bladed screw
driver in the direction that narrows frame to narrow enlarged
brake shoe.
3. While pushing and rotating the retainer, pull out shoe hold pin, and remove shoe assembly. CAUTION:
Do not damage the wheel cylinder boot.
4. Remove the parking brake rear cable from the operating lever. CAUTION:
Do not bend the parking brake cable.
5. Disassemble the shoe assembly (shoe, springs, adjuster, adjuster lever).
6. Remove retainer ring (A) with a tool to separate operating lever (C) from brake shoe.
• Retainer ring (A)
• Contact point (B)
• Operating lever (C)
•Pin (D)
INSPECTION AFTER REMOVAL
Lining Thickness Inspection
Check lining thickness.
Drum Inner Diameter Inspection
Check inner diameter of brake drum.
Measurement area: lining contact surface (center)
Wheel Cylinder Leakage Inspection
SFIA3080E
SFIA3075E
Standard thickness (A) (new) : Refer to BR-42, "Rear
Drum Brake".
Repair limit thickness (A) : Refer to BR-42, "
Rear
Drum Brake".
SBR021A
Standard inner diameter : Refer to BR-42, "Rear
Drum Brake".
Repair limit inner diameter : Refer to BR-42, "
Rear
Drum Brake".
SBR022A
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BR-38
< SERVICE INFORMATION >
REAR DRUM BRAKE
• Check wheel cylinder for brake fluid leakage.
• Check for wear, damage, and looseness. If any non-standard con-dition is found, replace it.
Other Inspections
Check the following:
• Inside of the drum for excessive wear, damage, and cracks.
• Lining for excessive wear, damage, and peeling.
• Shoe sliding surface for excessive wear and damage.
• Return spring for sagging.
• Check back plate for damage, cracks, and deformation. Replace back plate as necessary.
Replace applicable part as necessary.
INSTALLATION
1. Install operating lever (C) if removed, using the following steps.
a. Install operating lever (C) to brake shoe.
b. Install retainer ring (A) to operating lever (C), and crimp them
until their contact points (B) are met.
• Retainer ring (A)
• Contact point (B)
• Operating lever (C)
•Pin (D)
2. Apply PBC (Poly Butyl Cuprysil) grease or silicone based grease to brake shoes sliding surfaces (the shaded areas) and
other parts on the back plate as indicated by arrows.
3. Apply PBC (Poly Butyl Cuprysil) grease or silicone based grease to screw and confirm the difference between right and
left wheel for assembling when disassembled.
4. Assemble the shoe, adjuster, adjuster lever and springs to the shoe assembly.
WFIA0528E
SFIA3075E
WFIA0529E
Right rear
wheel Thread cutting
direction : Right-hand screw
Left rear
wheel Thread cutting
direction : Left-hand screw
SFIA3076E
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REAR DRUM BRAKEBR-39
< SERVICE INFORMATION >
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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 or 3 times).
9. Adjust clearance of brake shoe. Refer to PB-5, "
On-Vehicle Service".
10. Install rear wheel and tire. Refer to WT-7, "
Adjustment".
Removal and Installati on of Wheel CylinderINFOID:0000000005928418
REMOVAL
1. Drain the brake fluid. Refer to BR-9, "Drain and Refill".
2. Remove the rear brake shoe assembly. Refer to BR-36, "
Removal and Installation of Drum Brake Assem-
bly".
3. Remove the bleed valve.
4. Disconnect the brake tube from the wheel cylinder.
5. Remove the wheel cylinder bolts and then remove the wheel cylinder from the back plate.
INSTALLATION
Installation is in the reverse order of removal.
• Tighten bolts and bleed valve to the specified torque. Refer to BR-35, "
Component".
• Refill with new brake fluid and bleed the air. Refer to BR-9, "
Bleeding Brake System".
Disassembly and Assembly of Wheel CylinderINFOID:0000000005928419
DISASSEMBLY
1. Remove boots at the right and left of the wheel cylinder, and pull
the pistons and spring out of the cylinder.
2. Remove the piston cups from the pistons.
INSPECTION AFTER DISASSEMBLY
Check the pistons, spring and inner wall of the cylinder for wear, corrosion, and damage. Replace any parts as
necessary.
ASSEMBLY
CAUTION:
When inserting the piston, be caref ul not to scratch the cylinder.
1. Apply brake fluid to the piston sliding surface on the wheel cylinder.
2. Apply rubber grease to the piston cups and boots and assemble the wheel cylinder as shown.
SFIA3077E
SFIA3078E
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BR-40
< SERVICE INFORMATION >
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General SpecificationINFOID:0000000005928420
HR16DE
MR18DE
TypeWith ABS or VDC/TCS/ABSWithout ABS
Front brake Brake model AD22VK
Cylinder bore diameter 53.97 mm (2.125 in)
Pad
Length × width × thickness 115.0 mm ×
41.0 mm × 9.0 mm
(4.528 in × 1.614 in × 0.354 in)
Rotor outer diameter × thickness 260 mm × 22.0 mm (10.24 in × 0.866 in)
Rear brake Brake model LT20
Cylinder bore diameter 15.87 mm (0.625 in)17.46 mm (0.687 in)
Drum inner diameter 203 mm (7.992 in)
Master cylinder Cylinder bore diameter 22.22 mm (0.875 in)
Brake booster Booster model C255
Diaphragm diameter 255 mm (10.04 in)
Recommended brake fluid DOT 3
Front brake Brake modelCLZ25VF
Cylinder bore diameter 57.2 mm (2.252 in)
Pad
Length × width × thickness 125.6 mm
× 48.0 mm × 9.5 mm
(4.945 in × 1.890 in × 0.374 in)
Rotor outer diameter × thickness 280 mm × 24.0 mm (11.02 in × 0.945 in)
Rear brake Brake model LT23
Cylinder bore diameter 19.06 mm (0.750 in)
Drum inner diameter 228.6 mm (9.000 in)
Master cylinder Cylinder bore diameter 23.81 ± 0.015 mm (0.937 ± 0.001 in)
Brake booster Booster model C255
Diaphragm diameter 255 mm (10.04 in)
Recommended brake fluid DOT 3
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SERVICE DATA AND SPECIFICATIONS (SDS)BR-41
< SERVICE INFORMATION >
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Brake PedalINFOID:0000000005928421
Unit: mm (in)
Check ValveINFOID:0000000005928422
Brake pedal free height (H) (from dash panel top surface) A/T, CVT model 172.4 - 182.4 (6.79 - 7.18)
M/T model 162.3 - 172.3 (6.39 - 6.78)
Brake pedal full stroke (S) 133 (5.24)
Clearance between the pedal stopper and threaded end of stop lamp switch (C
1) and ASCD cancel
switch (C
2), if equipped 0.74 - 1.96 (0.0291 - 0.0772)
AWFIA0557ZZ
When connected to booster side (1)
Within 1.3 kPa (10 mmHg, 0.39 inHg) of vacuum for 15 seconds
[at vacuum of – 66.7 kPa (– 500 mmHg, – 19.69 inHg]
When connected to engine side (2) No vacuum will be applied
SFIA0210E
Revision: May 2010 2011 Versa