2008 INFINITI FX35 engine coolant

CO-14
< SERVICE INFORMATION >[VQ35DE]
RADIATOR
4. Remove reservoir tank and reservoir tank bracket.
5. Disconnect A/T fluid cooler hoses from radiator.
 Install blind plug to avoid leakage of A/T fluid.
6. Removal radiator hoses (upper and lower) and reservoir tank hose. CAUTION:
Be careful not to allow engine coolant to contact drive belts.
7. Remove radiator cooling fan assembly. Refer to CO-20, "
Component".
8. Rotate two radiator upper mount brackets 90 degrees in the direction shown in the figure, and remove them.
9. Lift up and remove radiator. CAUTION:
Do not damage or scratch A/C condenser and radiator core
when removing.
INSTALLATION
Installation is the reverse order of removal.
INSPECTION AFTER INSTALLATION
 Check for leaks of engine coolant using the radiator cap tester adapter (commercial service tool) and the
radiator cap tester (commercial service tool). Refer to CO-10, "
Inspection".
 Start and warm up the engine. Visually make sure t hat there is no leaks of engine coolant and A/T fluid.
Checking Radiator CapINFOID:0000000001325849
 Check valve seat of radiator cap.
- Check if valve seat is swollen to the extent that the edge of the
plunger cannot be seen when watching it vertically from the top.
- Check if valve seat has no soil and damage.
SBIA0447E
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PBIC2816E
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RADIATORCO-15
< SERVICE INFORMATION > [VQ35DE]
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 Pull negative-pressure valve to open it, and make sure that it close
completely when released.
- Make sure that there is no dirt or damage on the valve seat of radi-
ator cap negative-pressure valve.
- Make sure that there are no unusualness in the opening and clos- ing conditions of negative-pressure valve.
 Check radiator cap relief pressure.
- When connecting radiator cap to the radiator cap tester (commer- cial service tool) (A) and the radi ator cap tester adapter (commer-
cial service tool) (B), apply engine coolant to the cap seal surface.
 Replace radiator cap if there is an unusualness related to the above three.
CAUTION:
When installing radiator cap, thor oughly wipe out the radiator filler neck to remove any waxy residue
or foreign material.
Checking RadiatorINFOID:0000000001325850
Check radiator for mud or clogging. If necessary, clean radiator as follows.
 Be careful not to bend or damage radiator fins.
 When radiator is cleaned without removal, remove all surrounding parts such as radiator cooling fan assem-
bly and horns. Then tape harness and connectors to prevent water from entering.
1. Apply water by hose to the back side of the radiator core vertically downward.
2. Apply water again to all radiator core surfaces once per minute.
3. Stop washing if any stains no longer flow out from radiator.
4. Blow air into the back side of radiator core vertically downward.  Use compressed air lower than 490 kPa (5 kg/cm
2, 71 psi) and keep distance more than 30 cm (11.81
in).
5. Blow air again into all the radiator core surfaces once per minute until no water sprays out.
SMA967B
Standard:
78 - 98 kPa (0.8 - 1.0 kg/cm
2, 11 - 14 psi)
Limit:
59 kPa (0.6 kg/cm
2, 9 psi)
PBIC5122J
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CO-22
< SERVICE INFORMATION >[VQ35DE]
WATER PUMP
WATER PUMP
ComponentINFOID:0000000001325856
Removal and InstallationINFOID:0000000001325857
CAUTION:
 When removing water pump assembly, be careful
not to get engine coolant on drive belts.
 Water pump cannot be disassembled and should be replaced as a unit.
 After installing water pump, connect hose and cl amp securely, then check for leaks using the radia-
tor cap tester (commercial service tool) and the radiator cap tester adapter (commercial service
tool).
REMOVAL
1. Remove front engine undercover with power tool.
2. Remove drive belts. Refer to EM-15, "
Removal and Installation".
3. Drain engine coolant from radiator. Refer to CO-10, "
Changing Engine Coolant".
CAUTION:
 Perform this step when the engine is cold.
 Do not spill engine coolant on drive belts.
4. Remove air duct (inlet), power duct and air cleaner case assembly. Refer to EM-17, "
Component".
5. Remove water drain plug (front) on water pump side of cylinder block to drain engine coolant from engine inside.
6. Remove chain tensioner cover and water pump cover from front timing chain case.  Use the seal cutter [SST: KV10111100 (J37228)] to cut liquid gasket for removal.
7. Remove timing chain tensioner (primary) as follows:
1. Timing chain tensioner (primary) 2. Chain tensioner cover 3. Water pump cover
4. Water pump 5. O-rings 6. Water drain plug (front)
SBIA0482E
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3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

CO-24
< SERVICE INFORMATION >[VQ35DE]
WATER PUMP
b. Screw M8 bolts [pitch: 1.25 mm (0.0492 in) length: approx. 50
mm (1.97 in)] into water pumps upper and lower mounting bolt
holes until they reach timing chain case. Then, alternately
tighten each bolt for a half turn, and pull out water pump.
CAUTION:
 Pull straight out while pr eventing vane from contacting
socket in installation area.
 Remove water pump without causing sprocket to contact timing chain.
c. Remove M8 bolts and O-rings from water pump. CAUTION:
Do not disassemble water pump.
INSPECTION AFTER REMOVAL
 Check for badly rusted or corroded water pump body assembly.
 Check for rough operation due to excessive end play.
 If anything is found, replace water pump.
INSTALLATION
1. Install new O-rings to water pump. Apply engine oil and engine coolant to O-rings as shown in the
figure.
 Locate O-ring with white paint mark to engine front side.
2. Install water pump. CAUTION:
Do not allow cylinder block to nip O-rings when installing
water pump.
 Make sure timing chain and water pump sprocket are engaged.
 Insert water pump by tightening mounting bolts alternately and evenly.
3. Install timing chain tensioner (primary) as follows:
JLC357B
SLC943A
PBIC1397E
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CO-26
< SERVICE INFORMATION >[VQ35DE]
WATER PUMP
b. Apply a continuous bead of liquid gasket with the tube presser
(commercial service tool) to mating surface of chain tensioner
cover and water pump cover.
Use Genuine RTV Silicone Seal ant or equivalent. Refer to
GI-44, "
Recommended Chemical Product and Sealant".
CAUTION:
Attaching should be done with in 5 minutes after coating.
c. Tighten mounting bolts.
5. Install water drain plug (front) on water pump side of cylinder block.  Apply liquid gasket to the thread of water drain plug (front).
Use Genuine RTV Silicone Sealant or equivalent. Refer to GI-44, "
Recommended Chemical Prod-
uct and Sealant".
6. Install in the reverse order of removal for remaining parts. After starting engine, let idle fo r three minutes, then rev engine up to 3,000 rpm under no load to
purge air from the high-pressure chamber of ch ain tensioner. Engine may produce a rattling
noise. This indicates that air still remains in the chamber and is not a matter of concern.
INSPECTION AFTER INSTALLATION
 Check for leaks of engine coolant using the radiator cap tester adapter (commercial service tool) and the
radiator cap tester (commercial service tool). Refer to CO-10, "
Inspection".
 Start and warm up the engine. Visually make sure that there is no leaks of engine coolant.
PBIC2663E
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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
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CO-28
< SERVICE INFORMATION >[VQ35DE]
WATER INLET AND THERMOSTAT ASSEMBLY
2. Check valve operation.
 If the malfunctioning condition, when valve seating at ordinary
room temperature, or measured values are out of the standard,
replace water inlet and thermostat assembly.
INSTALLATION
Note the following, and install in the reverse order of removal.
 Be careful not to spill engine coolant over en gine room. Use rag to absorb engine coolant.
INSPECTION AFTER INSTALLATION
 Check for leaks of engine coolant using the radiator cap tester adapter (commercial service tool) and the
radiator cap tester (commercial service tool). Refer to CO-10, "
Inspection".
 Start and warm up the engine. Visually make sure that there is no leaks of engine coolant.
Thermostat
Valve opening temperature 76 - 79 °C (169 - 174 °F)
Maximum valve lift 8.6 mm/90 °C (0.339 in/194 °F)
Valve closing temperature 71 °C (160 °F)
SLC949A
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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
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