2001 INFINITI QX4 brake pads

NBBR0085
NVH Troubleshooting ChartNBBR0085S01Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
Reference page
BR-22, 28
BR-22, 28
BR-26
BR-22
Ð
Ð
BR-24, 28
Ð
Ð
Ð
BR-25
BR-28
PD-3
PD-3
AX-3
AX-3
SU-3
SU-3
SU-3
ST-6
Possible cause and
SUSPECTED PARTS
Linings or pads - damaged
Linings or pads - uneven wear
Return spring damaged
Shims damaged
Rotor or drum imbalance
Rotor or drum damage
Rotor or drum runout
Rotor or drum deformation
Rotor or drum deflection
Rotor or drum rust
Rotor thickness variation
Drum out of round
PROPELLER SHAFT
DIFFERENTIAL
DRIVE SHAFT
AXLE
SUSPENSION
TIRES
ROAD WHEEL
STEERING
Symptom BRAKENoise´´´´ ´´´´´´´´
Shake´ ´ ´´´´´´
Shimmy, Judder´´´´´´´´ ´´´´´
´: Applicable
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting Chart
BR-6

ComponentsNBBR0031
SBR385DC
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 ReplacementNBBR0032WARNING:
Clean brakes with a vacuum dust collector to minimize the
hazard of airborne particles or other materials.
CAUTION:
IWhen cylinder body is open, do not depress brake pedal,
or piston will pop out.
IBe careful not to damage piston boot or get oil on rotor.
Always replace shims when replacing pads.
IIf shims are rusted or show peeling of the rubber coat,
replace them with new shims.
IIt 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.
ICarefully monitor brake fluid level because brake fluid will
return to reservoir when pushing back piston.
FRONT DISC BRAKE
Components
BR-22

SBR383D
1. Remove master cylinder reservoir cap.
2. Remove lower pin bolt.
SBR384D
3. Open cylinder body upward. Then remove pad retainers, and
inner and outer shims.
Standard pad thickness:
11.0 mm (0.433 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.
RemovalNBBR0033WARNING:
Clean brake pads with a vacuum dust collector to minimize the
hazard of airborne particles or other materials.
CAUTION:
Suspend caliper assembly with wire so as not to stretch brake
hose.
SBR386D
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.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
ST
RS
BT
HA
SC
EL
IDX
FRONT DISC BRAKE
Pad Replacement (Cont'd)
BR-23

4 CHECK BRAKE BOOSTER OPERATION
Check brake booster for operation and air tightness.
Refer to ªOn-vehicle Serviceº, ªBRAKE BOOSTERº, BR-19.
SBR058C
Is brake booster airtight and functioning properly?
Ye s©GO TO 5.
No©Replace. GO TO 5.
5 CHECK BRAKE PAD AND ROTOR
Check brake pad and rotor.
Refer to (BR-22, BR-24).
SBR059C
Are brake pads and rotors functioning properly?
Ye s©GO TO 6.
No©Replace.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS Ð BASIC INSPECTIONABS
Preliminary Check (Cont'd)
BR-51

NBMA0004
Two different maintenance schedules are provided, and should be used, depending upon the conditions in
which the vehicle is mainly operated.After 60,000 miles (96,000 km) or 48 months, continue the periodic
maintenance at the same mileage/time intervals.
Schedule 1Follow Periodic Maintenance Schedule 1 if your driving habits frequently
includes one or more of the following driving conditions:
IRepeated short trips of less than 5 miles (8 km).
IRepeated short trips of less than 10 miles (16 km) with outside tempera-
tures remaining below freezing.
IOperating in hot weather in stop-and-go ªrush hourº traffic.
IExtensive idling and/or low speed driving for long distances, such as police,
taxi or door-to-door delivery use.
IDriving in dusty conditions.
IDriving on rough, muddy, or salt spread roads.
ITowing a trailer, using a camper or a car-top carrier.Emission Control Sys-
tem Maintenance
MA-7
Chassis and Body
Maintenance
MA-8
Schedule 2Follow Periodic Maintenance Schedule 2 if none of the driving conditions
shown in Schedule 1 apply to your driving habits.Emission Control Sys-
tem MaintenanceMA-9
Chassis and Body
MaintenanceMA-10
Maintenance for off-road driving
Whenever you drive off-road through sand, mud or water, more frequent maintenance may be required of the
following items:
GBrake pads and rotors
GBrake lining and drums
GBrake lines and hoses
GWheel bearing grease
GDifferential, transmission and transfer oil
GSteering linkage
GPropeller shaft and drive shafts
GAir cleaner filter
PERIODIC MAINTENANCE
MA-6

CHASSIS AND BODY MAINTENANCENBMA0004S0102
Abbreviations: R = Replace. I = Inspect. Correct or replace if necessary. L = Lubricate
MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Reference
Section
- Page or
- Content Title Perform at number of miles, kilo-
meters or months, whichever
comes first.Miles x 1,000
(km x 1,000)
Months3.75
(6)
37.5
(12)
611.25
(18)
915
(24)
1218.75
(30)
1522.5
(36)
1826.25
(42)
2130
(48)
2433.75
(54)
2737.5
(60)
3041.25
(66)
3345
(72)
3648.75
(78)
3952.5
(84)
4256.25
(90)
4560
(96)
48
Brake lines & cables I I I I MA-25
Brake pads, rotors, drums & linings I IIIIIIIMA-25, 26
Automatic transmission & all-mode
4WD transfer fluid & differential
gear oil (exc. LSD)NOTE (1) I I I I MA-21, 22, 23
LSD gear oil NOTE (1) I R I R MA-24
Steering gear, linkage & transfer
gear, axle & suspension partsIIIIIIIIMA-26
NOTE (6)
Tire rotation NOTE (2)MA-4
Drive shaft boots (
) IIIIIIIIAX-10, ªDrive
Shaftº
Propeller shaft NOTE (3) L LLLLLLLMA-23
Front wheel bearing grease (4x2) I I
Front wheel bearing
grease (
)NOTE (4) I R I RAX-4, ªFront
Wheel Bearingº
Exhaust system I IIIIIIIMA-21
Supplemental air bag systems NOTE (5)RS-14, ªMainte-
nance Itemsº
Ventilation air filter I RIRIRIRHA-159, ªVentila-
tion Air Filterº
ASCD vacuum hoses I I I IEL-237, ªASCD
ACTUATOR/
PUMP CHECKº
NOTE:
(1) If towing a trailer, using a camper or a car-top carrier, or driving on rough or muddy roads, change (not just inspect) fluid (A/T, all mode 4WD transfer)/differential gear oil (exc.
LSD) at every 30,000 miles (48,000 km) or 24 months, and change LSD gear oil every 15,000 miles (24,000 km) or 12 months.
(2) Refer to ªTire rotationº under the ªGENERAL MAINTENANCEº heading earlier in this section.
(3) The propeller shaft should be re-greased after being immersed in water.
(4) If operating frequently in water, replace grease every 3,750 miles (6,000 km) or 3 months.
(5) Inspect the air bag system 10 years after the date of manufacture noted on the FMVSS certification label.
(6) Refer to SU-5, ªFront Suspension Partsº and SU-16, ªRear Suspension Partsº, AX-3, ªFront Axle Partsº and AX-18, ªRear Axle Partsº.
PERIODIC MAINTENANCE
Schedule 1 (Cont'd)
MA-8

CHASSIS AND BODY MAINTENANCENBMA0004S0202
Abbreviations: R = Replace. I = Inspect. Correct or replace if necessary. L = Lubricate
MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Reference Section
- Page
or
- Content Title Perform at number of miles, kilometers
or months, whichever comes first.Miles x 1,000
(km x 1,000)
Months7.5
(12)
615
(24)
1222.5
(36)
1830
(48)
2437.5
(60)
3045
(72)
3652.5
(84)
4260
(96)
48
Brake lines & cablesIIIIMA-25
Brake pads, rotors, drums & liningsIIIIMA-25, 26
Automatic transmission & all-mode 4WD
transfer fluid & differential gear oil (exc.
LSD)IIIIMA-21, 22, 23
LSD gear oilIRIRMA-24
Steering gear, linkage & transfer gear,
axle & suspension partsIIMA-26
NOTE (4)
Tire rotation NOTE (1)MA-4
Drive shaft boots (
) IIIIAX-10, ªDrive shaftº
Propeller shaft NOTE (2)LLLLMA-23
Front wheel bearing grease (4x2) I I
Front wheel bearing grease (
) IRIRAX-4, ªFront Wheel
Bearingº
Exhaust systemI I MA-21
Supplemental air bag systems NOTE (3)RS-14, ªMaintenance
Itemº
Ventilation air filterRRRRHA-159, ªVentilation Air
Filterº
ASCD vacuum hosesIIIIEL-237, ªASCD
ACTUATOR/PUMP
CHECKº
NOTE:
(1) Refer to ªTire rotationº under the ªGENERAL MAINTENANCEº heading earlier in this section.
(2) The propeller shaft should be re-greased after being immersed in water.
(3) Inspect the air bag system 10 years after the date of manufacture noted on the FMVSS certification label.
(4) Refer to SU-5, ªFront Suspension Partsº and SU-16, ªRear Suspension Partsº, AX-3, ªFront Axle Partsº and AX-18, ªRear Axle Partsº.
PERIODIC MAINTENANCE
Schedule 2 (Cont'd)
MA-10