INFINITI FX35 2008 Service Manual

CO-40
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RADIATOR
RADIATOR
ComponentINFOID:0000000001325871
Removal and InstallationINFOID:0000000001325872
REMOVAL
WARNING:
Do not remove radiator cap when engine is hot.
Serious burns could occur from high-pressure engine
coolant escaping from radiator. Wrap a thick cloth arou nd radiator cap. Slowly turn it a quarter of a
turn to release built-up pressure. Carefully remove radiator cap by turning it all the way.
1. Remove engine cover with power tool. Refer to EM-169, "
Component".
2. Remove engine front undercover with power tool.
3. Drain engine coolant from radiator. Refer to CO-37, "
Changing Engine Coolant".
CAUTION:
Perform this step when engine is cold.
4. Remove air duct (inlet), air cleaner case and mass air flow sensor assembly. Refer to EM-173, "
Compo-
nent".
5. Remove radiator hoses (upper and lower). CAUTION:
Do not spill engine coolant on drive belts.
1. Radiator 2. Upper mount bracket 3. Mounting rubber
4. Radiator hose (lower) 5. Radiator drain plug 6. O-ring
7. A/T fluid cooler hose 8. Radiator hose (upper) 9. Reservoir tank hose
10. Reservoir tank cap 11. Reservoir tank 12. Radiator shroud (lower)
13. Radiator shroud
PBIC1531E
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

RADIATORCO-41
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6. Disconnect A/T fluid cooler hoses.
 Install blind plug to avoid leakage of A/T fluid.
7. Remove radiator shroud (lower).  While pressing left and right pawls in direction indicated byarrows, pull radiator shroud (lower) rearwards to remove.
8. Lift up and remove radiator shroud.
9. Remove washer tank mounting bolts.
10. Rotate two radiator upper mount brackets 90 degrees in the direction as shown in the figure, and remove them.
PBIC1532E
PBIC1535E
PBIC1534E
PBIC1533E
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CO-42
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RADIATOR
11. Lift up and remove radiator.
CAUTION:
Do not damage or scratch A/C condenser and radiator core
when removing.
INSTALLATION
Install in the reverse order of removal.
INSPECTION AFTER INSTALLATION
 Check for leaks of engine coolant using radiator cap tester adapter (commercial service tool) and radiator
cap tester (commercial service tool). Refer to CO-37, "
Inspection".
 Start and warm up engine. Visually Check if t here is no leaks of engine coolant and A/T fluid.
Checking Radiator CapINFOID:0000000001325873
 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.
 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 adapter (commercial service tool) (B) and t he radiator cap tester (commer-
cial service tool) (A), apply engine c oolant to the cap seal surface.
 Replace radiator cap if there is an unusualness.
PBIC1536E
PBIC2816E
SMA967B
Standard : 78 - 98 kPa (0.8 - 1.0 kg/cm2, 11 - 14 psi)
Limit : 59 kPa (0.6 kg/cm
2, 9 psi)
PBIC5122J
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

RADIATORCO-43
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CAUTION:
When installing a radiator cap, thoroughly wipe out
the radiator filler neck to remove any waxy residue
or foreign material.
Checking RadiatorINFOID:0000000001325874
Check radiator for mud or clogging. If necessary, clean radiator as follows:
CAUTION:
 Be careful not to bend or damage the radiator fins.
 When radiator is cleaned without removal, remove all surrounding parts such as cooling fan, radia-
tor shroud and horns. Then tape the harness and electrical connectors to prevent water from enter-
ing.
1. Apply water by hose to the back side of the radiator core vertically downward.
2. Apply water again to all radiator core surface 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 (11.8 in).
5. Blow air again into all the radiator core surfaces once per minute until no water sprays out.
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

CO-44
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RADIATOR (ALUMINUM TYPE)
RADIATOR (ALUMINUM TYPE)
ComponentINFOID:0000000001325875
Disassembly and AssemblyINFOID:0000000001325876
PREPARATION
1. Attach spacer to tip of radiator plate pliers A (SST).
Spacer specification: 18 mm (0.71 in) wide × 8.5 mm (0.335 in)
long × 1.5 mm (0.059 in) thick.
2. Make sure that when radiator plate pliers A [SST: KV99103510 ( — )] are closed dimension H ′′ is
approx. 7.6 mm (0.299 in).
3. Adjust dimension H ′′ with spacer, if necessary.
DISASSEMBLY
1. Remove upper and lower tanks with radiator plate pliers B
(SST).
CAUTION:
Do not disassemble lower tank and A/T fluid cooler.
NOTE:
Regard lower tank and A/T fluid cooler as an assembly.
1. Upper tank 2. Sealing rubber 3. Core
4. Lower tank (with A/T fluid cooler)
PBIC2549E
SLC655CB
SLC903-A
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

RADIATOR (ALUMINUM TYPE)CO-45
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 Grip the crimped edge and bend it upwards so that radiator
plate pliers B [SST: KV99103520 ( — )] slips off.
CAUTION:
Do not bend excessively.
 In areas where radiator plate pliers B [SST: KV99103520 ( — )] cannot be used, use flat-blade screwdriver to bend the
edge up.
CAUTION:
Be careful not to damage tank.
2. Remove sealing rubber.
3. Make sure the edge stands straight up.
ASSEMBLY
1. Clean contact portion of tank.
SLC893
SLC930
SLC931
SLC932
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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CO-46
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RADIATOR (ALUMINUM TYPE)
2. Install new sealing rubber while pushing it with fingers.
CAUTION:
Be careful not to twist sealing rubber.
3. Caulk tank in numerical order as shown in the figure with radia- tor plate pliers A (SST).
 Use pliers in the locations where radiator plate pliers A [SST:
KV99103510 ( — )] cannot be used.
4. Make sure that the rim is completely crimped down.
SLC917A
SLC904-A
PBIC2076E
SLC897
Standard height “H” : 8.0 - 8.4 mm (0.315 - 0.331 in)
SLC554A
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

RADIATOR (ALUMINUM TYPE)CO-47
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5. Make sure that there is no leakage. Refer to "INSPECTION".
INSPECTION
1. Apply pressure with radiator cap tester adapter (commercial ser-
vice tool) and radiator cap tester (commercial service tool).
 provide used radiator and connect it to tested radiator usingradiator hoses as shown in the figure.
NOTE:
The used radiator should be tested beforehand to confirm it
has no leakage. If used one is not available, it is possible to
use new service part as a radiator testing tool.
WARNING:
To prevent the risk of hose coming undone whil e under pressure, securely fasten it down with
hose clamp.
CAUTION:
Attach hose to A/T fluid cooler to seal its inlet and outlet.
2. Check for leakage by soaking radiator in water container with the testing pressure applied.Testing pressure
: 157 kPa (1.6 kg/cm
2, 23 psi)PBIC5158E
PBIC1699E
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

CO-48
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COOLING FAN
COOLING FAN
Component (Crankshaft Driven type)INFOID:0000000001325877
Removal and InstallationINFOID:0000000001325878
REMOVAL
1. Remove air duct (inlet). Refer to
EM-173, "Component".
2. Remove engine front undercover with power tool.
3. Remove radiator shroud (lower). Refer to CO-40, "
Component".
4. Remove drive belts. Refer to EM-170, "
Component".
5. Remove fan coupling and cooling fan assembly. CAUTION:
Do not damage or scratch ra diator core when removing.
6. Remove cooling fan from fan coupling.
INSPECTION AFTER REMOVAL
Fan Coupling
Inspect fan coupling for oil leakage and bimetal conditions.
 If anything is found, replace fan coupling.
Cooling Fan
Inspect cooling fan for crack or unusual bend.
 If anything is found, replace cooling fan.
INSTALLATION
Note the following, install in the reverse order of removal.
 Install cooling fan with its front mark “F” facing fr ont of vehicle. Refer to "Removal and Installation".
1. Cooling fan 2. Fan coupling 3. Fan and water pump pulley
4. Water pump
PBIC1537E
SLC072
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

COOLING FANCO-49
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Component (Motor Driven Type)INFOID:0000000001325879
Removal and InstallationINFOID:0000000001325880
REMOVAL
1. Remove front grille. Refer to
EI-22, "Component Parts Location".
2. Disconnect harness connector from fan motor.
3. Remove cooling fan assembly. CAUTION:
Do not damage or scratch A/C condenser when removed.
INSTALLATION
Install in the reverse order of removal.
 Cooling fan is controlled by ECM. For details. Refer to EC-1030, "
Description".
Disassembly and Assembly (Motor Driven Type)INFOID:0000000001325881
DISASSEMBLY
1. Remove cooling fan from fan motor.
2. Remove fan motor from fan grille.
INSPECTION AFTER DISASSEMBLY
Cooling Fan
Inspect cooling fan for crack or unusual bend.
 If anything is found, replace cooling fan.
ASSEMBLY
Assemble in the reverse order of disassembly.
1. Cooling fan 2. Fan grille 3. Fan motor
PBIC1666E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C