Nissan Murano Z50 (2006 year). Manual — part 55

RADIATOR (ALUMINUM TYPE)

CO-17

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●

Grip the crimped edge and bend it upwards so that the radia-
tor plate pliers B [SST: KV99103520 (

—

)] slips off.

CAUTION:

Do not bend excessively.

●

In areas where the radiator plate pliers B [SST: KV99103520
(

—

)] cannot be used, use a 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

CO-18

RADIATOR (ALUMINUM TYPE)

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2006 Murano

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 the
radiator plate pliers A (SST).

●

Use pliers in the locations where the radiator plate pliers A
[SST: KV99103510 (

—

)] cannot be used.

SLC917A

SLC904-A

PBIC2076E

SLC897

RADIATOR (ALUMINUM TYPE)

CO-19

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4.

Make sure that the rim is completely crimped down.

5.

Make sure that there is no leakage.
Refer to

CO-19, "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 CVT fluid cooler to seal its inlet and outlet.

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

CO-20

COOLING FAN

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2006 Murano

COOLING FAN

PFP:21140

Removal and Installation

NBS002AQ

REMOVAL

1.

Drain engine coolant from radiator. Refer to

CO-9, "Changing Engine Coolant"

.

CAUTION:

●

Perform this step when the engine is cold.

●

Do not spill engine coolant on drive belts.

2.

Remove air duct (inlet) and radiator cover grills (right and left sides). Refer to

EM-16, "AIR CLEANER

AND AIR DUCT"

.

3.

Disconnect radiator hose (upper) at radiator side. Refer to

CO-13, "RADIATOR"

.

4.

Disconnect harness connector from fan motors, and move harness to aside.

5.

Remove battery and battery tray, and move fuse and fusible link block to aside. Refer to

SC-4, "BAT-

TERY"

.

6.

Remove mounting bolts to lift up and remove radiator cooling fan assembly.

CAUTION:

Be careful not to damage or scratch on radiator core.

INSTALLATION

Install in 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-502, "DTC P1217 ENGINE OVER TEMPERA-

TURE"

.

1.

Cooling fan (RH)

2.

Cooling fan (LH)

3.

Fan shroud

4.

Fan motor

PBIC2694E

COOLING FAN

CO-21

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Disassembly and Assembly

NBS002AR

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 are different between RH and LH. Be careful not to misassemble them.

CO-22

WATER PUMP

Revision: 2006 August

2006 Murano

WATER PUMP

PFP:21020

Removal and Installation

NBS002AS

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 leaks using the radi-
ator cap tester (commercial service tool) and the radiator cap tester adapter [SST: EG17650301
(J33984-A)].

REMOVAL

1.

Remove engine cover. Refer to

EM-18, "INTAKE MANIFOLD COLLECTOR"

.

2.

Remove air duct (inlet) and radiator cover grills (right and left sides). Refer to

EM-16, "AIR CLEANER

AND AIR DUCT"

.

3.

Remove undercover and splash guard (RH).

4.

Drain engine coolant from radiator. Refer to

CO-9, "Changing Engine Coolant"

.

CAUTION:

●

Perform this step when the engine is cold.

●

Do not spill engine coolant on drive belts.

5.

Remove drive belts. Refer to

EM-13, "DRIVE BELTS"

.

6.

Remove reservoir tank of radiator. Refer to

CO-13, "RADIATOR"

.

7.

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

PS-34, "HYDRAULIC LINE"

.

8.

Support oil pan (lower) bottom with transmission jack.

9.

Remove RH engine mounting insulator and RH engine mounting bracket. Refer to

EM-108, "ENGINE

ASSEMBLY"

.

1.

Water pump

2.

Timing chain tensioner (primary)

3.

Chain tensioner cover

4.

Water drain plug (front)

5.

Water pump cover

6.

O-ring

7.

O-ring

PBIC2695E

WATER PUMP

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10. Remove water drain plug (front) on water pump side of cylinder

block to drain engine coolant from engine inside.

11. 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.

12. Remove idler pulley and bracket. Refer to

EM-60, "TIMING CHAIN"

.

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

a.

Remove lower mounting bolt.

CAUTION:

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

b.

Loosen upper mounting bolt slowly, and then turn chain ten-
sioner (primary) on the mounting bolt so that plunger 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.

14. Remove water pump as follows:

PBIC2662E

PBIC3575E

PBIC4820E

PBIC3576E

CO-24

WATER PUMP

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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 (0.049 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.

PBIC1193E

JLC357B

SLC943A

PBIC1397E

WATER PUMP

CO-25

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2.

Install water pump.

CAUTION:

Do not 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:

a.

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

b.

Pull plunger stopper tab up (or turn lever downward) so as to
remove plunger stopper tab from the ratchet of plunger.

NOTE:
Plunger stopper tab and lever 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 through hole of lever into ten-
sioner body hole.

●

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.

Make sure again that timing chain and water pump sprocket are engaged.

4.

Install chain tensioner cover and water pump cover as follows:

SLC031B

PBIC4820E

PBIC3568E

PBIC3577E

CO-26

WATER PUMP

Revision: 2006 August

2006 Murano

a.

Before installing, remove all traces of old liquid gasket from mat-
ing surface of water pump cover and chain tensioner cover
using 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-47, "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-47, "RECOMMENDED CHEMICAL

PRODUCTS AND SEALANTS"

.

6.

Install in the reverse order of removal after this step.

●

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-9, "LEAK CHECK"

.

●

Start and warm up the engine. Visually make sure that there is no leaks of engine coolant.

SLC446B

PBIC2663E

WATER INLET AND THERMOSTAT ASSEMBLY

CO-27

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WATER INLET AND THERMOSTAT ASSEMBLY

PFP:21200

Removal and Installation

NBS002AT

REMOVAL

1.

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-9, "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.

2.

Remove reservoir tank of radiator, and move it aside.

3.

Disconnect radiator hose (lower) and oil cooler water hose from water inlet and thermostat assembly.

4.

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

3.

Radiator hose (lower)

4.

Water hose

PBIC2696E

SLC962AB

CO-28

WATER INLET AND THERMOSTAT ASSEMBLY

Revision: 2006 August

2006 Murano

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-9, "LEAK CHECK"

.

●

Start and warm up the engine. Visually make sure that there is no leaks of engine coolant.

Thermostat

Standard

Valve opening temperature

80.5 - 83.5

°

C (177 - 182

°

F)

Maximum valve lift

8.6 mm/95

°

C (0.339 in/203

°

F)

Valve closing temperature

77

°

C (171

°

F)

SLC949A

WATER OUTLET AND WATER PIPING

CO-29

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WATER OUTLET AND WATER PIPING

PFP:11060

Removal and Installation

NBS002AU

●

Refer to

GI-10, "Components"

for symbol marks in the figure.

REMOVAL

1.

Remove engine cover. Refer to

EM-18, "INTAKE MANIFOLD COLLECTOR"

.

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-9, "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), radiator cover grills (right and left sides), air cleaner case (upper) with mass air
flow sensor and air duct assembly. Refer to

EM-16, "AIR CLEANER AND AIR DUCT"

.

4.

Remove battery and battery tray. Refer to

SC-8, "Removal and Installation"

.

5.

Remove CVT fluid cooler control valve assembly. Refer to

CVT-229, "TRANSAXLE ASSEMBLY"

.

6.

Move CVT control cable aside. Refer to

CVT-208, "SHIFT CONTROL SYSTEM"

.

1.

Radiator hose (upper)

2.

Washer

3.

Engine coolant temperature sensor

4.

Heater hose

5.

Water outlet

6.

Water hose

7.

Gasket

8.

Water hose

9.

Gasket

10. Water connector

11.

O-ring

12. Heater pipe

13. Heater hose

14. Water bypass pipe

15. Water hose

A.

To heater core

B.

To intake manifold collector (upper)

C.

To intake manifold collector (upper)

D.

To heater core

E.

To radiator

PBIC4583J

CO-30

WATER OUTLET AND WATER PIPING

Revision: 2006 August

2006 Murano

7.

Remove radiator hose (upper).

8.

Remove water hoses and heater hoses.

9.

Disconnect harness connectors, and move harness to aside.

10. Remove engine coolant temperature sensor as necessary.

CAUTION:

Be careful not to damage engine coolant temperature sensor.

11. Remove water outlet, heater pipe, water bypass pipe and water connector.

INSTALLATION

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

●

Securely insert each hose, and install clamp at a position where it does not interfere with the pipe bulge.

●

When inserting water bypass pipe and heater pipe into water connector, apply neutral detergent to O-ring.

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-9, "LEAK CHECK"

.

●

Start and warm up the engine. Visually make sure that there is no leaks of engine coolant.

SERVICE DATA AND SPECIFICATIONS (SDS)

CO-31

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SERVICE DATA AND SPECIFICATIONS (SDS)

PFP:00100

Standard and Limit

NBS002AV

ENGINE COOLANT CAPACITY (APPROXIMATE)

Unit:

(US qt, Imp qt)

RADIATOR

Unit: kPa (kg/cm

2

, psi)

THERMOSTAT

Engine coolant capacity (With reservoir tank at “MAX” level)

9.6 (10-1/8, 8-1/2)

Reservoir tank engine coolant capacity (At “MAX” level)

0.8 (7/8, 3/4)

Cap relief pressure

Standard

78 - 98 (0.8 - 1.0, 11 - 14)

Limit

59 (0.6, 9)

Leakage testing pressure

157 (1.6, 23)

Thermostat

Standard

Valve opening temperature

80.5 - 83.5

°

C (177 - 182

°

F)

Maximum valve lift

8.6 mm/95

°

C (0.339 in/203

°

F)

Valve closing temperature

77

°

C (171

°

F)

CO-32

SERVICE DATA AND SPECIFICATIONS (SDS)

Revision: 2006 August

2006 Murano