2008 INFINITI FX35 lock

WATER INLET AND THERMOSTAT ASSEMBLYCO-27
< SERVICE INFORMATION > [VQ35DE]
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WATER INLET AND THERMOSTAT ASSEMBLY
ComponentINFOID:0000000001325858
 Refer to
GI-8, "Component" for symbols in the figure.
Removal and InstallationINFOID:0000000001325859
REMOVAL
1. Remove front engine undercover using power tool.
2. Drain engine coolant from radiator drain plug at the bottom of radiator, and from water drain plug at the
front of cylinder block. Refer to CO-10, "
Changing Engine Coolant" and CO-22, "Component".
CAUTION:
 Perform this step when the engine is cold.
 Do not spill engine coolant on drive belts.
3. Remove air duct (inlet). Refer to EM-17, "
Component".
4. Disconnect radiator hose (lower) and oil cooler wate r hose from water inlet and thermostat assembly.
5. Remove water inlet and thermostat assembly. CAUTION:
Do not disassemble water inle t and thermostat assembly.
Replace them as a unit, if necessary.
INSPECTION AFTER REMOVAL
1. Check valve seating condition at ordinary r oom temperatures. It should seat tightly.
1. Water inlet and thermostat assembly 2. Gasket
PBIC5002E
SLC962AB
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

WATER OUTLET AND WATER PIPINGCO-29
< SERVICE INFORMATION > [VQ35DE]
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WATER OUTLET AND WATER PIPING
ComponentINFOID:0000000001325860
Removal and InstallationINFOID:0000000001325861
REMOVAL
1. Remove front engine undercover with power tool.
2. Drain engine coolant from radiator drain plug at the
bottom of radiator, and from water drain plug at the
front of cylinder block. Refer to CO-10, "
Changing Engine Coolant" and CO-22, "Component".
CAUTION:
 Perform this step when the engine is cold.
 Do not spill engine coolant on drive belts.
3. Remove engine cover with power tool. Refer to EM-19, "
Component".
4. Remove air duct (inlet), air duct and air cleaner case assembly. Refer to EM-17, "
Component".
5. Remove radiator hose (upper) and heater hose.
6. Remove the following parts, when remove water outlet.  A/T fluid charging pipe: Refer to AT-241, "
Removal and Installation (2WD Models)".
 Intake manifold collectors (upper and lower). Refer to EM-19, "
Component".
 Rocker cover (right bank). Refer to EM-51, "
Component".
7. Remove engine coolant temperature sensor as necessary. CAUTION:
Be careful not to damage engi ne coolant temperature sensor.
8. Remove water outlet, heater pipe, water bypass hoses and water pipe.
INSTALLATION
1. Harness bracket 2. Water hose 3. Water bypass hose
4. Engine coolant temperature sensor 5. Gasket 6. Water outlet
7. Heater hose 8. Water pipe 9. Radiator hose (upper)
10. Heater pipe 11. Washer 12. O-ring
SBIA0484E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

OVERHEATING CAUSE ANALYSISCO-35
< SERVICE INFORMATION > [VK45DE]
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Except cool-
ing system
parts mal-
function — Overload on engine
Abusive driving
High engine rpm under no
load
Driving in low gear for ex-
tended time
Driving at extremely high
speed
Powertrain system malfunc-
tion
—
Installed improper size
wheels and tires
Dragging brakes
Improper ignition timing
Blocked or restricted air
flow Blocked bumper —
—
Blocked radiator grille
Installed car brassiere
Mud contamination or paper
clogging
Blocked radiator —
Blocked condenser Blocked air flow
Installed large fog lamp
Symptom Check items
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

ENGINE COOLANTCO-37
< SERVICE INFORMATION > [VK45DE]
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ENGINE COOLANT
InspectionINFOID:0000000001325869
LEVEL CHECK
 Check if the reservoir tank engine coolant level is within the “MIN”
to “MAX” when engine is cool.
 Adjust the engine coolant level as necessary.
LEAK CHECK
 To check for leaks, apply pressure to the cooling system with radi-
ator cap tester (commercial serv ice tool) and radiator cap tester
adapter (commercial service tool) (A).
WARNING:
Do not remove radiator cap when engine is hot. Serious burns
could occur from high-pressure engine coolant escaping from
thermostat housing.
CAUTION:
Higher testing pressure than specified may cause radiator
damage.
NOTE:
In a case engine coolant decreases, r eplenish radiator with engine coolant.
 If anything is found, repair or replace damaged parts.
Changing Engine CoolantINFOID:0000000001325870
WARNING:
 To avoid being scalded, do not change engine coolant when engine is hot.
 Wrap a thick cloth around radiator cap and carefully remove radiator cap. First, turn radiator cap a
quarter of a turn to release built-up pressu re. Then turn radiator cap all the way.
DRAINING ENGINE COOLANT
1. Remove front engine undercover with power tool.
2. Open radiator drain plug at the bottom of radiator, and then
remove radiator cap.
When draining all of engine coolant in the system , open water drain plugs on cylinder block. Refer
to EM-242, "
Disassembly and Assembly".
3. Remove reservoir tank as necessary, and drain engine coolant and clean reservoir tank before installing.
SMA412B
Testing pressure : 157 kPa (1.6 kg/cm2, 23 psi)
JPBIA0828ZZ
SBIA0444E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

CO-38
< SERVICE INFORMATION >[VK45DE]
ENGINE COOLANT
4. Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
If contaminated, flush the engine cooling system. Refer to "FLUSHING COOLING SYSTEM".
REFILLING ENGINE COOLANT
1. Install reservoir tank, and radiator drain plug.
CAUTION:
Be sure to clean radiator drain plug and install with new O-ring.
If water drain plugs on cylinder block are removed, close and tighten them. Refer to EM-242, "
Dis-
assembly and Assembly".
2. Make sure that each hose clamp has been firmly tightened.
3. Remove air relief plug on heater hose.
4. Fill thermostat housing and reservoir tank to specified level. Refill engine coolant up to fill er neck of thermostat housing.
 Pour engine coolant through engine coolant filler neck slowly of less than 2 (2-1/8 US qt, 1-3/4
Imp qt) a minute to allo w air in system to escape.
 Use Genuine NISSAN Long Life Anti freeze/Coolant or equivalent mixed with water (distilled or
demineralized). Refer to MA-9, "
Fluids and Lubricants".
 When engine coolant overflows air relief hole on heater hose, install air relief plug.
5. Install radiator cap.
6. Warm up until opening thermostat. Standard for warming- up time is approximately 10 minutes at 3,000
rpm.
 Make sure thermostat opening condition by touching radiator hose (lower) to see a flow of warm water.
CAUTION:
Watch water temperature gauge so as not to overheat engine.
7. Stop engine and cool down to less than approximately 50 °C (122 °F).
 Cool down using a fan to reduce the time.
 If necessary, refill engine coolant up to filler neck of thermostat housing. Radiator drain plug:
: 1.19 N·m (0.12 kg-m, 11 in-lb)
PBIC1530E
Engine coolant capacity
(With reservoir tank at “MAX” level):Approx. 10.0 (10-5/8 US qt, 8-3/4 Imp qt)
Reservoir tank engine coolant capacity
(At “MAX” level):0.8 (7/8 US qt, 3/4 lmp qt)
SMA412B
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

ENGINE COOLANTCO-39
< SERVICE INFORMATION > [VK45DE]
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8. Refill reservoir tank to “MAX” level line with engine coolant.
9. Repeat steps 4 through 7 two or more times with radiator cap installed until engine coolant level no longer
drops.
10. Check cooling system for leaks with engine running.
11. Warm up engine, and check for sound of engine coolant flow while running engine from idle up to 3,000 rpm with heater temperature controller set at several position between “COOL” and “WARM”.
 Sound may be noticeable at heater unit.
12. Repeat step 11 three times.
13. If sound is heard, bleed air from cooling system by repeating steps 4 through 7 until engine coolant level
no longer drops.
FLUSHING COOLING SYSTEM
1. Install reservoir tank, and radiator drain plug. CAUTION:
Be sure to clean drain plug and install with new O-ring.
If water drain plugs on cylinder block ar e removed, close and tighten them. Refer to EM-242, "
Dis-
assembly and Assembly".
2. Remove air relief plug on heater hose.
3. Fill thermostat housing with water until water spills from the air relief hole, then close air relief plug. Fill
thermostat housing and reservoir tank with water and reinstall radiator cap.
4. Run engine and warm it up to normal operating temperature.
5. Rev engine two or three times under no-load.
6. Stop engine and wait until it cools down.
7. Drain water from the system. Refer to "DRAINING ENGINE COOLANT".
8. Repeat steps 1 through 7 until clear water begins to drain from radiator. Radiator drain plug:
: 1.19 N·m (0.12 kg-m, 11 in-lb)
PBIC1530E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

CO-50
< SERVICE INFORMATION >[VK45DE]
WATER PUMP
WATER PUMP
ComponentINFOID:0000000001325882
Removal and InstallationINFOID:0000000001325883
CAUTION:
 When removing water pump, be careful no
t to get engine coolant on drive belts.
 Water pump can not be disassembled and should be replaced as a unit.
 After installing water pump, connect hose and clamp securely, then check for leaks using radiator
cap tester (commercial service tool) and radiator cap tester adapter (commercial service tool).
REMOVAL
1. Drain engine coolant from drain plugs on radiator and both side of cylinder block. Refer to CO-37, "Chang-
ing Engine Coolant" and EM-242, "Disassembly and Assembly".
CAUTION:
 Perform this step when engine is cold.
 Do not spill engine coolant on drive belts.
2. Remove following parts:  Engine front undercover
 Air duct (inlet): Refer to EM-173, "
Component".
 Alternator, water pump and A/C compressor belt: Refer to EM-170, "
Component".
3. Remove fan coupling with cooling fan, and then fan and water pump pulley.
4. Remove water pump.  Engine coolant will leak from cylinder block, so have a receptacle ready under vehicle.
CAUTION:
 Handle the water pump vane so that it does not contact any other parts.
 Do not disassemble water pump.
INSPECTION AFTER REMOVAL
1. Fan and water pump pulley 2. Water pump 3. Gasket
PBIC1538E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

CO-52
< SERVICE INFORMATION >[VK45DE]
THERMOSTAT AND WATER CONTROL VALVE
THERMOSTAT AND WATER CONTROL VALVE
ComponentINFOID:0000000001325884
1. O-ring 2. Water outlet pipe 3. Thermostat housing
4. Radiator cap 5. Radiator hose (upper) 6. Water hose
7. Water hose 8. Water pipe 9. Water hose
10. Water hose 11. Thermostat 12. Rubber ring
13. Water inlet 14. Water suction hose 15. Water suction pipe
16. Radiator hose (lower) 17. Water hose 18. Water hose
19. O-ring 20. Heater pipe 21. Heater hose
22. Gasket 23. Water outlet 24. Water control valve
25. Rubber ring 26. O-ring 27. Water connector
28. Heater hose 29. Gasket
A. To radiator B. To oil cooler C. To cylinder block
PBIC4557E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C