2001 INFINITI QX4 maintenance

Schedule 2NBMA0004S02EMISSION CONTROL SYSTEM MAINTENANCENBMA0004S0201
Abbreviations: R = Replace. I = Inspect. Correct or replace if necessary. [ ]: At the mileage intervals only
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
Drive beltsI* I* MA-13
Air cleaner filter[R] [R] MA-17
EVAP vapor linesI* I* MA-20
Fuel linesI* I* MA-16
Fuel filter* NOTE (1)MA-16
Engine coolant NOTE (2)R* MA-14
Engine oilRRRRRRRRMA-18
Engine oil filter (Use part No. 15208-
31U00 or equivalent.)RRRRRRRRMA-18
Spark plugs (PLATINUM-TIPPED type) Replace every 105,000 miles (169,000 km) MA-19
Intake & exhaust valve clearance* NOTE (3)EM-52, ªValve Clear-
anceº
NOTE:
(1) When the filter becomes clogged, the vehicle speed cannot be increased as the driver wishes. In such an event, replace the filter.
(2) After 60,000 miles (96,000 km) or 48 months, replace every 30,000 miles (48,000 km) or 24 months.
(3) If valve noise increases, inspect valve clearance.
HMaintenance items and intervals with ª*º are recommended by INFINITI for reliable vehicle operation. The owner need not perform such maintenance in order to maintain the
emission warranty or manufacturer recall liability. Other maintenance items and intervals are required.
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PERIODIC MAINTENANCE
Schedule 2
MA-9

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

Checking Drive BeltsNBMA0010
SMA091D
1. Inspect belt for cracks, fraying, wear and oil. If necessary,
replace.
2. Inspect drive belt deflection or tension at a point on the belt
midway between pulleys.
3. Check belt tension using belt tension gauge (BT3373-F or
equivalent).
Inspect drive belt deflection or tension when engine is cold.
Adjust if belt deflections exceed the limit or if belt tension is
not within specifications.
Belt deflection and tension
Deflection adjustment Unit: mm (in) Tension adjustment *1 Unit: N (kg, lb)
Used belt
New beltUsed belt
New belt
Limit After adjustment Limit After adjustment
Alternator
Power steering
oil pump
Fan7 (0.28)4-5
(0.16 - 0.20)3.5 - 4.5
(0.138 - 0.177)294 (30, 66)730 - 818 (74.4 -
83.5, 164 - 184)838 - 926 (85.4 -
94.5, 188 - 208)
Air conditioner
compressor12 (0.47)9-10
(0.35 - 0.39)8-9
(0.31 - 0.35)196 (20, 44)348 - 436 (35.5 -
44.5, 78 - 98)470 - 559 (47.9 -
57.0, 106 - 126)
Applied pushing
force98 N (10 kg, 22 lb) Ð
*1 If belt tension gauge cannot be installed at check points shown, check drive belt tension at a different location on the belt.
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ENGINE MAINTENANCE
Checking Drive Belts
MA-13

SMA857C
SMA858C
Changing Engine CoolantNBMA0011WARNING:
To avoid the danger of being scalded, never change the cool-
ant when the engine is hot.
ÐDRAINING ENGINE COOLANTÐNBMA0011S011. Set air conditioning system as follows to prevent coolant from
remaining in the system.
a. Turn ignition switch ªONº and set temperature controller to
maximum hot position.
b. Wait 10 seconds before turning ignition switch ªOFFº.
2. Open radiator drain plug at the bottom of radiator.
3. Remove radiator filler cap.
Remove reservoir tank, drain coolant, then clean reservoir
tank.
Install it temporarily.
IBe careful not to allow coolant to contact drive belts.
SMA092D
SMA093D
SMA094DA
4. Open drain plugs on right side of cylinder block and water
pump side, then open air relief plugs to drain coolant.
5. Check drained coolant for contaminants such as rust, coorro-
sion or discoloration. If contaminated flush engine cooling
system, ªRefer to FLUSHING COOLING SYSTEMº, MA-16.
ENGINE MAINTENANCE
Changing Engine Coolant
MA-14

SMA182B
ÐREFILLING ENGINE COOLANTÐNBMA0011S021. Install reservoir tank, radiator drain plug, and cylinder block
drain plugs.
IApply sealant to the thread of cylinder block drain plugs.
:8-11N´m(0.8 - 1.2 kg-m, 70 - 104 in-lb) Front side
: 18 - 21 N´m (1.8 - 2.2 kg-m, 13 - 15 ft-lb) Right side
2. Fill coolant up to the top of the radiator mouth. While filling,
tighten each air bleeding plug from where coolant overflows.
Fill in the coolant again up to top of the mouth.
3. Reservoir tank with coolant up to the MAX level and install
radiator cap.
Air relief plugs:
: 6.7 - 7.9 N´m (0.68 - 0.81 kg-m, 59 - 70 in-lb)
Use Geniune Nissan anti-freeze coolant or equivalent mixed
with demineralized water/distilled water.
For coolant mixture ratio, refer to ªRECOMMENDED FLUIDS AND
LUBRICANTSº, MA-11.
Coolant capacity (Without reservoir tank):
8.6(9-1/8 US qt, 7-5/8 Imp qt)
SMA412B
Reservoir tank capacity (for MAX level):
0.6(5/8 US qt, 1/2 Imp qt)
Pour coolant through coolant filler neck slowly to allow air in
system to escape.
4. Warm up engine to normal operating temperature.
5. Run engine at 3,000 rpm for 10 seconds and return to idle
speed.
IRepeat 2 or 3 times.
Watch coolant temperature gauge so as not to overheat the
engine.
6. Stop engine and cool it down.
ICool down using a fan to reduce the time.
7. Remove the radiator filler cap and check coolant level.
IIf necessary, refill radiator up to filler neck with coolant.
8. Refill reservoir tank to Max line with coolant.
9. Repeat steps 4 through step 8 two or more times.
10. Warm up engine, and check for sound of coolant flow while
running engine from idle up to 3,000 rpm with heater tempera-
ture control set at several positions between COOL and HOT.
ISound may be noticeable at heater water cock.
11. If sound is heard, bleed air from cooling system by repeating
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ENGINE MAINTENANCE
Changing Engine Coolant (Cont'd)
MA-15

steps 4 through 8 until coolant level no longer drops.
IClean excess coolant from engine.
ÐFLUSHING COOLING SYSTEMÐNBMA0011S031. Open air relief plug.
2. Fill radiator with water until water spills from the air relief holes,
then close air relief plugs. Fill radiator and reservoir tank with
water and reinstall radiator cap.
3. Run engine and warm it up to normal operating temperature.
4. Rev engine two or three times under no-load.
5. Stop engine and wait until it cools down.
6. Drain water.
7. Repeat steps 1 through 6 until clear water begins to drain from
radiator.
SMA803A
Checking Fuel LinesNBMA0012Inspect fuel lines and tank for improper attachment, leaks, cracks,
damage, loose connections, chafing or deterioration.
If necessary, repair or replace faulty parts.
MMA104A
CAUTION:
Tighten high-pressure rubber hose clamp so that clamp end is
3 mm (0.12 in) from hose end.
Tightening torque specifications are the same for all rubber
hose clamps.
Ensure that screw does not contact adjacent parts.
SEF214Y
Changing Fuel FilterNBMA0013WARNING:
Before removing fuel filter, release fuel pressure from fuel line.
WITH CONSULT-IINBMA0013S011. Turn ignition switch ªONº.
2. Perform ªFUEL PRESSURE RELEASEº in ªWORK SUP-
PORTº mode with CONSULT-II.
3. Start engine.
4. After engine stalls, crank engine two or three times to release
all fuel pressure.
ENGINE MAINTENANCE
Changing Engine Coolant (Cont'd)
MA-16

5. Turn ignition switch ªOFFº.
SMA861C
6. Loosen fuel hose clamps.
7. Replace fuel filter.
IBe careful not to spill fuel over engine compartment. Place
a shop towel to absorb fuel.
IUse a high-pressure type fuel filter. Do not use a synthetic
resinous fuel filter.
IWhen tightening fuel hose clamps, refer to ªChecking Fuel
Linesº.
SMA869C
WITHOUT CONSULT-IINBMA0013S021. Remove fuel pump fuse located in fuse box.
2. Start engine.
3. After engine stalls, crank it two or three times to release all fuel
pressure.
4. Turn ignition switch ªOFFº and install fuel pump fuse.
SMA861C
5. Loosen fuel hose clamps.
6. Replace fuel filter.
IBe careful not to spill fuel over engine compartment. Place
a shop towel to absorb fuel.
IUse a high-pressure type fuel filter. Do not use a synthetic
resinous fuel filter.
IWhen tightening fuel hose clamps, refer to ªChecking Fuel
Linesº.
SMA095D
Changing Air Cleaner FilterNBMA0014VISCOUS PAPER TYPENBMA0014S01The viscous paper type filter does not need cleaning between
replacement intervals.
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ENGINE MAINTENANCE
Changing Fuel Filter (Cont'd)
MA-17

SMA096D
Changing Engine OilNBMA0015WARNING:
IBe careful not to burn yourself, as the engine oil is hot.
IProlonged and repeated contact with used engine oil may
cause skin cancer; try to avoid direct skin contact with
used oil. If skin contact is made, wash thoroughly with
soap or hand cleaner as soon as possible.
1. Warm up engine, and check for oil leakage from engine com-
ponents.
2. Stop engine and wait for more than 10 minutes.
3. Remove drain plug and oil filler cap.
4. Drain oil and refill with new engine oil.
Oil specification and viscosity
IAPI grade SG or SH, Energy ConservingI&IIorAPIgrade
SJ, Energy Conserving
IAPI Certification Mark
IILSAC grade GF-I & GF-II
ISee ªRECOMMENDED FLUIDS AND LUBRICANTSº, MA-11.
Oil capacity (Approximately):
Unit:(US qt, Imp qt)
Drain and refillWith oil filter change 5.0 (5-1/4, 4-3/8)
Without oil filter change 4.8 (5-1/8, 4-1/4)
Dry engine (engine overhaul) 6.8 (7-1/4, 6)
CAUTION:
IBe sure to clean drain plug and install with new washer.
Oil pan drain plug:
: 29 - 39 N´m (3.0 - 4.0 kg-m, 22 - 29 ft-lb)
IThe refill capacity depends on the oil temperature and
drain time. Use these specifications for reference only.
Always use the dipstick to determine when the proper
amount of oil is in the engine.
JMA122D
5. Warm up engine and check area around drain plug and oil fil-
ter for oil leakage.
6. Stop engine and wait for more than 10 minutes.
7. Check oil level.
SMA097D
Changing Oil FilterNBMA00161. Remove oil filter with Tool.
WARNING:
Be careful not to burn yourself, as the engine and engine oil
are hot.
The filter is a full-flow cartridge type and is provided with a relief
valve.
Refer to LC-7, ªOil Filterº.
ENGINE MAINTENANCE
Changing Engine Oil
MA-18