Page 1225 of 4731
CO-20
[VQ35DE]
RADIATOR (ALUMINUM TYPE)
Revision: 2005 July 2005 FX
4. Make sure that the rim is completely crimped down.
5. Make sure that there is no leakage. Refer to CO-20, "
INSPECTION" .
INSPECTION
1. Apply pressure with the radiator cap tester adapter [SST] and
the radiator cap tester (commercial service tool).
WARNING:
To prevent the risk of hose coming undone while under
pressure, securely fasten it down with hose clamp.
CAUTION:
Attach hose to A/T fluid cooler to seal its inlet and outlet. (A/
T models)
2. Check for leakage by soaking radiator in water container with the testing pressure applied. Standard height “H” : 8.0 - 8.4 mm (0.315 - 0.331 in)
SLC554A
Testing pressure
: 157 kPa (1.6 kg/cm
2 , 23
psi)
SLC933-A
SLC934
Page 1226 of 4731
![INFINITI FX35 2005 Service Manual COOLING FAN CO-21
[VQ35DE]
C
D E
F
G H
I
J
K L
M A
CO
Revision: 2005 July 2005 FX
COOLING FANPFP:21140
ComponentsABS00E7Z
Removal and Installation ABS005GR
REMOVAL
1. Remove air duct (inl INFINITI FX35 2005 Service Manual COOLING FAN CO-21
[VQ35DE]
C
D E
F
G H
I
J
K L
M A
CO
Revision: 2005 July 2005 FX
COOLING FANPFP:21140
ComponentsABS00E7Z
Removal and Installation ABS005GR
REMOVAL
1. Remove air duct (inl](/manual-img/42/57020/w960_57020-1225.png)
COOLING FAN CO-21
[VQ35DE]
C
D E
F
G H
I
J
K L
M A
CO
Revision: 2005 July 2005 FX
COOLING FANPFP:21140
ComponentsABS00E7Z
Removal and Installation ABS005GR
REMOVAL
1. Remove air duct (inlet), power duct and air cleaner case assembly. Refer to EM-17, "AIR CLEANER AND
AIR DUCT" .
2. Disconnect harness connector from fan motors, and move harness to aside.
3. Remove radiator cooling fan assembly.
CAUTION:
Be careful not to damage or scratch on radiator core.
INSTALLATION
Installation is the reverse order of removal.
INSPECTION AFTER INSTALLATION
Make sure that fan motors operate normally.
NOTE:
Cooling fans are controlled by ECM. For details, refer to EC-467, "
DTC P1217 ENGINE OVER TEMPERA-
TURE" .
Disassembly and Assembly ABS004WG
DISASSEMBLY
1. Remove cooling fans (RH and LH) from fan motors.
2. Remove fan motors from fan shroud.
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.
CAUTION:
Cooling fans and fan motors are different between RH and LH. Be careful not to misassemble them.
1. Cooling fan (RH) 2. Cooling fan (LH) 3. Fan shroud
4. Fan motor
PBIC3047E
Page 1227 of 4731
![INFINITI FX35 2005 Service Manual CO-22
[VQ35DE]
WATER PUMP
Revision: 2005 July 2005 FX
WATE R P U M PPFP:21020
ComponentsABS00E80
Removal and InstallationABS009RE
CAUTION:
When removing water pump assembly, be careful not to get en INFINITI FX35 2005 Service Manual CO-22
[VQ35DE]
WATER PUMP
Revision: 2005 July 2005 FX
WATE R P U M PPFP:21020
ComponentsABS00E80
Removal and InstallationABS009RE
CAUTION:
When removing water pump assembly, be careful not to get en](/manual-img/42/57020/w960_57020-1226.png)
CO-22
[VQ35DE]
WATER PUMP
Revision: 2005 July 2005 FX
WATE R P U M PPFP:21020
ComponentsABS00E80
Removal and InstallationABS009RE
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 clamp securely, then check for leaks using the radi-
ator cap tester (commercial service tool) and the radiator cap tester adapter [SST: EG17650301
(J33984-A)].
REMOVAL
1. Remove front engine undercover with power tool.
2. Remove drive belts. Refer to EM-15, "
DRIVE BELTS" .
3. Drain engine coolant from radiator. Refer to CO-11, "
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, "
AIR CLEANER AND
AIR DUCT" .
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.
U s e t h e s e a l c u t t e r [ S S T: K V 1 0 1111 0 0 ( J 3 7 2 2 8 ) ] t o c u t l i q u i d g a s k e t f o r r e m o v a l .
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
PBIC2662E
Page 1228 of 4731
![INFINITI FX35 2005 Service Manual WATER PUMP CO-23
[VQ35DE]
C
D E
F
G H
I
J
K L
M A
CO
Revision: 2005 July 2005 FX
7. Remove timing chain tensioner (primary) as follows:
a. Pull lever down and release plunger stopper tab INFINITI FX35 2005 Service Manual WATER PUMP CO-23
[VQ35DE]
C
D E
F
G H
I
J
K L
M A
CO
Revision: 2005 July 2005 FX
7. Remove timing chain tensioner (primary) as follows:
a. Pull lever down and release plunger stopper tab](/manual-img/42/57020/w960_57020-1227.png)
WATER PUMP CO-23
[VQ35DE]
C
D E
F
G H
I
J
K L
M A
CO
Revision: 2005 July 2005 FX
7. Remove timing chain tensioner (primary) as follows:
a. Pull lever down and release plunger stopper tab.
Plunger stopper tab can be pushed up to release (coaxial
structure with lever).
b. Insert a stopper pin into tensioner body hole to hold lever, and keep tab released.
NOTE:
An allen wrench [2.5 mm (0.098 in)] is used for the stopper pin
as an example.
c. Insert plunger into tensioner body by pressing slack guide.
d. Keep slack guide pressed and hold plunger in by pushing stop- per pin through the lever hole and tensioner body hole.
e. Turn crankshaft pulley clockwise so that timing chain on the tim- ing chain tensioner (primary) side is loose.
f. Remove mounting bolts and remove timing chain tensioner (pri- mary).
CAUTION:
Be careful not to drop mounting bolts inside timing chain
case.
8. Remove water pump as follows:
a. Remove three water pump mounting bolts. Secure a gap between water pump gear and timing chain, by turning crank-
shaft pulley counterclockwise until timing chain looseness on
water pump sprocket becomes maximum.
PBIC2112E
PBIC1805E
PBIC2113E
PBIC1193E
Page 1229 of 4731
![INFINITI FX35 2005 Service Manual CO-24
[VQ35DE]
WATER PUMP
Revision: 2005 July 2005 FX
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 re INFINITI FX35 2005 Service Manual CO-24
[VQ35DE]
WATER PUMP
Revision: 2005 July 2005 FX
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 re](/manual-img/42/57020/w960_57020-1228.png)
CO-24
[VQ35DE]
WATER PUMP
Revision: 2005 July 2005 FX
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 preventing 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:
a. Remove dust and foreign material completely from backside of timing chain tensioner (primary) and from installation area of rear timing chain case.
b. Turn crankshaft pulley clockwise so that timing chain on the timing chain tensioner (primary) side is loose.
c. Install timing chain tensioner (primary) with its stopper pin attached.
JLC357B
SLC943A
PBIC1397E
PBIC1058E
Page 1230 of 4731
![INFINITI FX35 2005 Service Manual WATER PUMP CO-25
[VQ35DE]
C
D E
F
G H
I
J
K L
M A
CO
Revision: 2005 July 2005 FX
CAUTION:
Be careful not to drop mounting bolts inside timing chain case.
d. Remove stopper pin.
e. Make INFINITI FX35 2005 Service Manual WATER PUMP CO-25
[VQ35DE]
C
D E
F
G H
I
J
K L
M A
CO
Revision: 2005 July 2005 FX
CAUTION:
Be careful not to drop mounting bolts inside timing chain case.
d. Remove stopper pin.
e. Make](/manual-img/42/57020/w960_57020-1229.png)
WATER PUMP CO-25
[VQ35DE]
C
D E
F
G H
I
J
K L
M A
CO
Revision: 2005 July 2005 FX
CAUTION:
Be careful not to drop mounting bolts inside timing chain case.
d. Remove stopper pin.
e. Make sure again that timing chain and water pump sprocket are engaged.
4. Install chain tensioner cover and water pump cover as follows:
a. Before installing, remove all traces of old liquid gasket from mat- ing surface of water pump cover and chain tensioner cover
using a scraper. Also remove traces of old liquid gasket from the
mating surface of front timing chain case.
b. Apply a continuous bead of liquid gasket with the tube presser [SST: WS39930000 ( — )] to mating surface of chain ten-
sioner cover and water pump cover.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" .
CAUTION:
Attaching should be done within 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-48, "
RECOMMENDED CHEMICAL
PRODUCTS AND SEALANTS" .
6. Install in the reverse order of removal for remaining parts.
After starting engine, let idle for three minutes, then rev engine up to 3,000 rpm under no load to
purge air from the high-pressure chamber of chain 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 [SST: EG17650301 (J33984-A)]
and the radiator cap tester (commercial service tool). Refer to CO-11, "
LEAK CHECK" .
Start and warm up the engine. Visually make sure that there is no leaks of engine coolant.
SLC448B
SLC446B
PBIC2663E
Page 1231 of 4731
CO-26
[VQ35DE]
WATER INLET AND THERMOSTAT ASSEMBLY
Revision: 2005 July 2005 FX
WATER INLET AND THERMOSTAT ASSEMBLYPFP:21200
ComponentsABS00E81
Removal and InstallationABS009RF
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-11, "
Changing Engine Coolant" and CO-22, "WATER PUMP" .
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, "
AIR CLEANER AND AIR DUCT" .
4. Disconnect radiator hose (lower) and oil cooler water hose from water inlet and thermostat assembly.
5. Remove water inlet and thermostat assembly. CAUTION:
Do not disassemble water inlet and thermostat assembly.
Replace them as a unit, if necessary.
1. Gasket 2. Water inlet and thermostat assembly
SBIA0483E
SLC962AB
Page 1232 of 4731
![INFINITI FX35 2005 Service Manual WATER INLET AND THERMOSTAT ASSEMBLY CO-27
[VQ35DE]
C
D E
F
G H
I
J
K L
M A
CO
Revision: 2005 July 2005 FX
INSPECTION AFTER REMOVAL
1. Check valve seating condition at ordinary room temper INFINITI FX35 2005 Service Manual WATER INLET AND THERMOSTAT ASSEMBLY CO-27
[VQ35DE]
C
D E
F
G H
I
J
K L
M A
CO
Revision: 2005 July 2005 FX
INSPECTION AFTER REMOVAL
1. Check valve seating condition at ordinary room temper](/manual-img/42/57020/w960_57020-1231.png)
WATER INLET AND THERMOSTAT ASSEMBLY CO-27
[VQ35DE]
C
D E
F
G H
I
J
K L
M A
CO
Revision: 2005 July 2005 FX
INSPECTION AFTER REMOVAL
1. Check valve seating condition at ordinary room temperatures. It should seat tightly.
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 engine room. Use rag to absorb engine coolant.
INSPECTION AFTER INSTALLATION
Check for leaks of engine coolant using the radiator cap tester adapter [SST: EG17650301 (J33984-A)]
and the radiator cap tester (commercial service tool). Refer to CO-11, "
LEAK CHECK" .
Start and warm up the engine. Visually make sure that there is no leaks of engine coolant.
Thermostat Standard
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