Nissan Murano. Manual - part 275

COOLING FAN

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< REMOVAL AND INSTALLATION >

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7.

Remove cooling fan assembly.

CAUTION:

Be careful not to damage or scratch on radiator core.

INSTALLATION

Note the following, and install in the reverse order of removal.

CAUTION:

Only use genuine parts for cooling fan mounting bolt and observe the specified torque (to prevent
radiator from being damaged).
NOTE:
Cooling fans are controlled by ECM. For details, refer to 

EC-74, "System Diagram"

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Disassembly and Assembly

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DISASSEMBLY

1.

Remove cooling fan mounting nuts, and then remove the cooling fans (RH and LH).

2.

Remove fan motors (RH and LH).

ASSEMBLY

Note the following, and assemble in the reverse order of disassembly.

CAUTION:

RH and LH cooling fans are different. Be careful not to misassemble them.
• Install each fan in the following position.

• Secure the harness tightly to the fan shroud to prevent the fan rotation area from being loose.

Inspection

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INSPECTION AFTER DISASSEMBLY

Cooling Fan

Inspect cooling fan for crack or unusual bend.
• If anything is found, replace cooling fan.

Right side

: 11 blades

Left side

: 9 blades

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< REMOVAL AND INSTALLATION >

WATER PUMP

WATER PUMP

Exploded View

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Removal and Installation

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CAUTION:

• When removing water pump assembly, be careful not to get engine coolant on drive belt.
• Water pump cannot be disassembled and should be replaced as a unit.
• After installing water pump, connect hose and clamp securely, then check for leakage using the radi-

ator cap tester (commercial service tool) and the radiator cap tester adapter (commercial service
tool).

REMOVAL

1.

Remove the following parts.
• Air duct (inlet): Refer to 

EM-31, "Exploded View"

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• Engine cover: Refer to 

EM-29, "Exploded View"

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• Engine under cover
• Front road wheel and tire
• Splash guard (RH): Refer to 

EXT-26, "FENDER PROTECTOR : Exploded View"

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2.

Drain engine coolant from radiator. Refer to 

CO-11, "Draining"

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CAUTION:

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

3.

Remove drive belt. Refer to 

EM-17, "Removal and Installation"

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4.

Remove idler pulleys. Refer to 

EM-30, "Exploded View"

.

1.

Timing chain tensioner (primary)

2.

Valve timing control cover gasket 
(bank 1)

3.

Valve timing control cover (bank 1)

4.

Water drain plug (front)

5.

Water pump cover

6.

O-ring

7.

O-ring

8.

Water pump

A.

Apply engine coolant

B.

Identify with white mark

: Always replace after every disassembly.

: N·m (kg-m, ft-lb)

: N·m (kg-m, in-lb)

: Should be lubricated with oil.

: Sealing point

JPBIA2460GB

WATER PUMP

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< REMOVAL AND INSTALLATION >

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5.

Remove reservoir tank of radiator. Refer to 

CO-16, "Exploded View"

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6.

Remove reservoir tank of power steering oil pump with piping connected, and move it to aside. Refer to

ST-64, "Exploded View"

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7.

Support oil pan (lower) bottom with transmission jack.

8.

Remove engine mounting insulator (RH), engine mounting bracket (RH) and upper torque rod. Refer to

EM-72, "2WD : Exploded View"

 (2WD models) or 

EM-81, "AWD : Exploded View"

 (AWD models).

9.

Remove water drain plug (front) on water pump side of cylinder block to drain engine coolant from engine
inside.

10. Remove valve timing control cover (bank 1) and water pump cover from front timing chain case.

• Use the seal cutter [SST: KV10111100 (J-37228)] to cut liquid gasket for removal.

11. Remove timing chain tensioner (primary) as follows:

a.

Remove lower mounting bolt (1).

CAUTION:

Be careful not to drop mounting bolt inside timing chain
case.

b.

Loosen upper mounting bolt (2) slowly, and then turn chain ten-
sioner (primary) (3) on the mounting bolt so that plunger (4) is
fully expanded.
NOTE:
Even if plunger is fully expanded, it is not dropped from the body
of timing chain tensioner (primary).

c.

Turn crankshaft pulley clockwise so that timing chain on the tim-
ing chain tensioner (primary) side is loose.

d.

Remove upper mounting bolt, and then remove timing chain ten-
sioner (primary).

CAUTION:

Be careful not to drop mounting bolt inside timing chain
case.

12. Remove water pump as follows:

JPBIA0085ZZ

PBIC4820E

PBIC3576E

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< REMOVAL AND INSTALLATION >

WATER PUMP

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. 

b.

Screw M8 bolts [pitch: 1.25 mm (0.0492 in) length: approxi-
mately 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:

Never disassemble water pump.

INSTALLATION

CAUTION:

Do not reuse O-rings.

1.

Install new O-rings to water pump.

CAUTION:

Do not reuse O-rings.
• 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:

Never allow cylinder block to nip O-rings when installing
water pump.
• Check that 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:

PBIC1193E

JLC357B

PBIC1397E

SLC031B