Infiniti FX35, FX50 (S51). Manual - part 444

 

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Infiniti FX35, FX50 (S51). Manual - part 444

 

 

WATER PUMP

CO-21

< REMOVAL AND INSTALLATION >

[VQ35HR]

C

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b.

Pull plunger stopper tab (A) up (or turn lever downward) so as to
remove plunger stopper tab from the ratchet of plunger (D).
NOTE:
Plunger stopper tab and lever (C) are synchronized.

c.

Push plunger into the inside of tensioner body.

d.

Hold plunger in the fully compressed position by engaging
plunger stopper tab with the tip of ratchet.

e.

To secure lever, insert stopper pin (E) through hole of lever into
tensioner body hole (B).
• The lever parts and the tab are synchronized. Therefore, the

plunger will be secured under this condition.

NOTE:
Figure shows the example of 1.2 mm (0.047 in) diameter thin screwdriver being used as the stopper pin.

f.

Install timing chain tensioner (primary).
• Remove dust and foreign material completely from backside of timing chain tensioner (primary) and

from installation area of rear timing chain case.

g.

Remove stopper pin.

h.

Check again that timing chain and water pump sprocket are engaged.

4.

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

INFOID:0000000005246369

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.

INSPECTION AFTER INSTALLATION

• Check that the reservoir tank cap is tightened.
• Check for leakage of engine coolant using the radiator cap tester adapter (commercial service tool) and the

radiator cap tester (commercial service tool). Refer to 

CO-33, "Inspection"

.

• Start and warm up the engine. Visually check that there is no leakage of engine coolant.

JPBIA0118ZZ

SLC943A

CO-22

< REMOVAL AND INSTALLATION >

[VQ35HR]

WATER INLET AND THERMOSTAT ASSEMBLY

WATER INLET AND THERMOSTAT ASSEMBLY

Exploded View

INFOID:0000000005246370

Removal and Installation

INFOID:0000000005246371

REMOVAL

1.

Remove engine cover. Refer to 

EM-27, "Exploded View"

.

2.

Remove air duct and air cleaner case assembly (bank 2). Refer to 

EM-29, "Exploded View"

.

3.

Remove reservoir tank. Refer to 

CO-14, "Exploded View"

.

4.

Remove engine undercover with a power tool.

5.

Drain engine coolant from radiator drain plug at the bottom of radiator. Refer to 

CO-8, "Draining"

CAUTION:

• Perform this step when the engine is cold.
• Never spill engine coolant on drive belt.

6.

Disconnect radiator hose (lower).

7.

Disconnect intake valve timing control solenoid valve harness connector (bank 2), and remove intake
valve timing control solenoid valve.

8.

Remove water inlet and thermostat assembly (1).

CAUTION:

Never disassemble water inlet and thermostat assembly.
Replace them as a unit, if necessary.

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.

1.

Gasket

2.

Water inlet and thermostat assembly

Refer to 

GI-4, "Components"

 for symbols in the figure.

JPBIA1466GB

A

: Never loosen these screws.

JPBIA0261ZZ

WATER INLET AND THERMOSTAT ASSEMBLY

CO-23

< REMOVAL AND INSTALLATION >

[VQ35HR]

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Inspection

INFOID:0000000005246372

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.

INSPECTION AFTER INSTALLATION

• Check that the reservoir tank cap is tightened.
• Check for leakage of engine coolant using the radiator cap tester adapter (commercial service tool) and the

radiator cap tester (commercial service tool). Refer to 

CO-8, "Inspection"

.

• Start and warm up the engine. Visually check that there is no leakage of engine coolant.

Thermostat (Standard)

: Refer to 

CO-26, "Thermostat"

.

SLC949A

CO-24

< REMOVAL AND INSTALLATION >

[VQ35HR]

WATER OUTLET AND WATER PIPING

WATER OUTLET AND WATER PIPING

Exploded View

INFOID:0000000005246373

Removal and Installation

INFOID:0000000005246374

REMOVAL

1.

Remove engine undercover with a power tool.

2.

Drain engine coolant from drain plugs on radiator and cylinder block. Refer to 

CO-8, "Draining"

 and 

EM-

92, "Setting"

.

CAUTION:

• Perform this step when the engine is cold.

1.

Clamp

2.

Water hose

3.

Harness bracket

4.

Engine coolant temperature sensor

5.

Heater hose

6.

Clamp

7.

Water outlet (rear)

8.

Gasket

9.

O-ring

10. Water outlet pipe

11.

Water outlet (front)

12.

Radiator cap

13. Clamp

14.

Radiator hose (upper)

15.

Gasket

16. Water pipe

17.

Clamp

18.

Water hose

19. Water hose

20.

Gasket

21.

Heater pipe

22. Clamp

23.

Water hose

24.

Water hose

25. Water bypass pipe

26.

O-ring

27.

Heater hose

A.

To electric throttle control actuator 
(bank 1)

B.

To heater core

C.

To radiator

D.

To oil cooler

E.

To electric throttle control actuator 
(bank 2)

Refer to 

GI-4, "Components"

 for symbols in the figure.

JPBIA2319GB

 

 

 

 

 

 

 

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