2001 NISSAN ALMERA brake pads

Supplemental Restraint System (SRS) ªAIR
BAGº and ªSEAT BELT PRE-TENSIONERº
NJBR0139The Supplemental Restraint System such as ªAIR BAGº and ªSEAT BELT PRE-TENSIONERº used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of
collision. The SRS system composition which is available to NISSAN MODEL N16 is as follows (The compo-
sition varies according to the destination and optional equipment.):
+For a frontal collision
The Supplemental Restraint System consists of driver air bag module (located in the center of the steer-
ing wheel), front passenger air bag module (located on the instrument panel on passenger side), front seat
belt pre-tensioners, a diagnosis sensor unit, warning lamp, wiring harness and spiral cable.
+For a side collision
The Supplemental Restraint System consists of front side air bag module (located in the outer side of front
seat), side air bag (satellite) sensor, diagnosis sensor unit (one of components of air bags for a frontal
collision), wiring harness, warning lamp (one of components of air bags for a frontal collision).
Information necessary to service the system safely is included in theRS sectionof this Service Manual.
WARNING:
+To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance should be per-
formed by an authorized NISSAN dealer.
+Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the RS section.
+Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow harness connector.
SBR686C
Precautions for Brake SystemNJBR0002+Recommended fluid is brake fluid ªDOT 4º.
+Never reuse drained brake fluid.
+Be careful not to splash brake fluid on painted areas.
+To clean or wash all parts of master cylinder, disc brake
caliper and wheel cylinder, use clean brake fluid.
+Never use mineral oils such as gasoline or kerosene. They
will ruin rubber parts of the hydraulic system.
+Use flare nut wrench when removing and installing brake
tube.
+Always torque brake lines when installing.
+Burnish the brake contact surfaces after refinishing or
replacing drums or rotors, after replacing pads or linings,
or if a soft pedal occurs at very low mileage.
Refer to ªBrake Burnishing Procedureº, ªON-VEHICLE
SERVICEº, BR-8.
WARNING:
+Clean brake pads and shoes with a waste cloth, then wipe
with a dust collector.
PRECAUTIONS
Supplemental Restraint System (SRS) ªAIR BAGº and ªSEAT BELT PRE-TENSIONERº
BR-4

NJBR0005
NVH Troubleshooting ChartNJBR0005S01Use the table below to help you find the cause of the symptom. If necessary, repair or replace these parts.
Reference page
BR-27, 33, 35
BR-27, 33, 35
BR-31
BR-27, 35
Ð
Ð
BR-29, 39
Ð
Ð
Ð
BR-29, 39
BR-33
NVH in FA section
NVH in FA section
NVH in FA, RA section
NVH in FA section
NVH in ST section
SUSPECTED PARTS
(Possible cause)
Linings or pads - damaged
Linings or pads - uneven wear
Return springs damaged
Shims damaged
Rotor or drum imbalance
Rotor or drum damage
Rotor runout
Rotor or drum deformation
Rotor or drum deflection
Rotor or drum rust
Rotor thickness variation
Drum out of round
DRIVE SHAFT
AXLE AND SUSPENSION
TIRES
ROAD WHEEL
STEERING
Symp-
tomBRAKENoiseXXXX XXXXX
Shake XXXXXX
Shimmy, Jud-
derXXXXXXXX XXXX
X: Applicable
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting Chart
BR-7

SBR451D
Checking Brake Fluid LevelNJBR0006+Check fluid level in reservoir tank. It should be between Max
and Min lines on reservoir tank.
+If fluid level is extremely low, check brake system for leaks.
+Release parking brake lever and see if brake warning lamp
goes off. If not, check brake system for leaks.
SBR389C
Checking Brake LineNJBR0007CAUTION:
If leakage occurs around joints, retighten or, if necessary,
replace damaged parts.
1. Check brake lines (tubes and hoses) for cracks, deterioration
or other damage. Replace any damaged parts.
2. Check for oil leakage by fully depressing brake pedal while
engine is running.
SBR419C
Changing Brake FluidNJBR0008CAUTION:
+Refill with new brake fluid ªDOT 4º.
+Always keep fluid level higher than minimum line on res-
ervoir tank.
+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, wash it away with water immediately.
1. Clean inside of reservoir tank, and refill with new brake fluid.
2. Connect a vinyl tube to each air bleeder valve.
3. Drain brake fluid from each air bleeder valve by depressing
brake pedal while keeping reservoir level higher than minimum
line by adding new brake fluid.
4. Repeat until new brake fluid comes out of each air bleeder
valve.
Use same procedure as in bleeding hydraulic system to refill
brake fluid. Refer to ªBleeding Brake Systemº, BR-9.
Brake Burnishing ProcedureNJBR0036Burnish the brake contact surfaces according to the following pro-
cedure after refinishing or replacing drums or rotors, after replac-
ing pads or linings, or if a soft pedal occurs at very low mileage.
CAUTION:
Only perform this procedure under safe road and traffic con-
ditions. Use extreme caution.
1. Drive the vehicle on a straight smooth road at 50 km/h (31
MPH).
2. Use medium brake pedal/foot effort to bring the vehicle to a
complete stop from 50 km/h (31 MPH). Adjust brake pedal/foot
ON-VEHICLE SERVICE
Checking Brake Fluid Level
BR-8

ComponentNJBR0030
NBR429
1. Main pin
2. Pin boot
3. Torque member fixing bolt
4. Torque member
5. Shim cover
6. Inner shim7. Inner pad
8. Pad retainer
9. Outer pad
10. Outer shim
11. Connecting bolt
12. Copper washer13. Main pin bolt
14. Bleed valve
15. Cylinder body
16. Piston seal
17. Piston
18. Piston boot
Pad ReplacementNJBR0029WARNING:
Clean brake pads with a vacuum dust collector to minimize the
hazard of airborne particles or other materials.
CAUTION:
+When cylinder body is open, do not depress brake pedal
because piston will pop out.
+Be careful not to damage piston boot or get oil on rotor.
Always replace shims when replacing pads.
+If shims are rusted or show peeling of the rubber coat,
replace them with new shims.
+It is not necessary to remove connecting bolt except for
disassembly or replacement of caliper assembly. In this
case, suspend cylinder body with wire so as not to stretch
brake hose.
+Burnish the brake contact surfaces after refinishing or
replacing drums or rotors, after replacing pads or linings,
or if a soft pedal occurs at very low mileage.
Refer to ªBrake Burnishing Procedureº, ªON-VEHICLE
SERVICEº, BR-8.
FRONT DISC BRAKE
Component
BR-27

SBR976B
SBR932C
1. Remove master cylinder reservoir cap.
2. Remove pin bolt.
3. Open cylinder body upward. Then remove pad with retainers,
inner and outer shims.
Standard pad thickness:
11 mm (0.43 in)
Pad wear limit:
2.0 mm (0.079 in)
Carefully monitor brake fluid level because brake fluid will
return to reservoir when pushing back piston.
SBR979B
RemovalNJBR0031WARNING:
Clean brake pads with a vacuum dust collector to minimize the
hazard of airborne particles or other materials.
Remove torque member fixing bolts and connecting bolt.
It is not necessary to remove connecting bolt except for dis-
assembly or replacement of caliper assembly. In this case,
suspend caliper assembly with wire so as not to stretch brake
hose.
SBR772
DisassemblyNJBR0032WARNING:
Do not place your fingers in front of piston.
CAUTION:
Do not scratch or score cylinder wall.
1. Push out piston with piston boot with compressed air.
2. Remove piston seal with a suitable tool.
InspectionNJBR0033CALIPERNJBR0033S01Cylinder BodyNJBR0033S0101+Check inside surface of cylinder for score, rust, wear, damage
or presence of foreign materials. If any of the above conditions
are observed, replace cylinder body.
+Minor damage from rust or foreign materials may be eliminated
by polishing surface with a fine emery paper. Replace cylinder
body if necessary.
CAUTION:
Use brake fluid to clean. Never use mineral oil.
FRONT DISC BRAKE
Pad Replacement (Cont'd)
BR-28

SBR215B
Wheel Cylinder OverhaulNJBR0131+Check all internal parts for wear, rust and damage. Replace if
necessary.
+Pay attention so as not to scratch cylinder when installing pis-
tons.
SBR022A
Inspection Ð DrumNJBR0132Maximum inner diameter:
204.5 mm (8.05 in)
Maximum out-of-round:
0.03 mm (0.0012 in)
+Contact surface should be fine finished with No. 120 to 150
emery paper.
+Using a drum lathe, resurface brake drum if it shows scoring,
partial wear or stepped wear.
+After brake drum has been completely reconditioned or
replaced, check drum and shoes for proper contact pattern.
SMA849B
Inspection Ð LiningNJBR0133Check lining thickness.
Standard lining thickness:
4.5 mm (0.177 in)
Lining wear limit:
1.5 mm (0.059 in)
SBR618E
InstallationNJBR0134+Always perform shoe clearance adjustment. Refer to
BR-48.
+Burnish the brake contact surfaces after refinishing or
replacing drums or rotors, after replacing pads or linings,
or if a soft pedal occurs at very low mileage. Refer to
ªBrake Burnishing Procedureº, ªON-VEHICLE SERVICEº,
BR-8.
1. Fit toggle lever to brake shoe with retainer ring.
2. Apply brake grease to the contact areas shown at left.
REAR DRUM BRAKE
Wheel Cylinder Overhaul
BR-33

ComponentNJBR0038
SBR753E
1. Cable guide
2. Cylinder
3. Toggle lever
4. Pin
5. Pin boot
6. Torque member
7. Inner shim
8. Inner pad
9. Pad retainer
10. Outer pad11. Outer shim
12. Strut
13. O-ring
14. Push rod
15. Key plate
16. Retaining washer
17. Spring
18. Spring cover
19. Snap ring B
20. Piston seal21. Snap ring A
22. Washer
23. Wave washer
24. Washer
25. Bearing
26. Adjuster
27. Cup
28. Piston
29. Piston boot
Pad ReplacementNJBR0037WARNING:
Clean brake pads with a vacuum dust collector to minimize the
hazard of airborne particles or other materials.
CAUTION:
+When cylinder body is open, do not depress brake pedal
because piston will pop out.
+Be careful not to damage piston boot or get oil on rotor.
Always replace shims in replacing pads.
+If shims are rusted or show peeling of rubber coat, replace
them with new shims.
REAR DISC BRAKE (CAM & STRUT TYPE)
Component
BR-35

+It is not necessary to remove connecting bolt except for
disassembly or replacement of caliper assembly. In this
case, suspend cylinder body with wire so as not to stretch
brake hose.
+Burnish the brake contact surfaces after refinishing or
replacing drums or rotors, after replacing pads or linings,
or if a soft pedal occurs at very low mileage.
Refer to ªBrake Burnishing Procedureº, ªON-VEHICLE
SERVICEº, BR-8.
SBR764E
SBR916C
1. Remove master cylinder reservoir cap.
2. Remove brake cable mounting bolt and lock spring.
3. Release parking brake control lever, then disconnect cable
from the caliper.
4. Remove upper pin bolt.
5. Open cylinder body downward. Then remove pad retainers,
and inner and outer shims.
Standard pad thickness:
9.3 mm (0.366 in)
Pad wear limit:
2.0 mm (0.079 in)
SBR641
6. When installing new pads, push piston into cylinder body by
gently turning piston clockwise, as shown.
Carefully monitor brake fluid level because brake fluid will
return to reservoir when pushing back piston.
SBR306E
7. Adjust the piston to the right angle as shown in the figure.
REAR DISC BRAKE (CAM & STRUT TYPE)
Pad Replacement (Cont'd)
BR-36