Nissan Murano Z50 (2007 year). Manual

RADIATOR

CO-13

Revision: 2006 July

2007 Murano

RADIATOR

PFP:21400

Removal and Installation

NBS002AM

●

Refer to

GI-10, "Components"

for symbol marks in the figure.

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 around the cap. Slowly turn it a quarter of a turn to
release built-up pressure. Carefully remove radiator cap by turning it all the way.

REMOVAL

Remove undercover.

Drain engine coolant. Refer to

CO-9, "Changing Engine Coolant"

CAUTION:

●

Perform this step when the engine is cold.

●

Do not spill engine coolant on drive belts.

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

EM-16, "AIR CLEANER

AND AIR DUCT"

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

Disconnect CVT fluid cooler hoses.

●

Install plug to avoid leakage of CVT fluid.

Bracket

Reservoir tank cap

Reservoir tank

Bracket

Clamp

Reservoir tank hose

Radiator upper clip

Mounting rubber

Radiator cap

10. Radiator

11.

Mounting rubber

12. Clamp

13. CVT fluid cooler hose

14. Clamp

15. Radiator hose (upper)

16. CVT fluid cooler hose

17. O-ring

18. Drain plug

19. Radiator hose (lower)

20. Radiator cooling fan assembly

To water inlet

To water outlet

Vehicle front

PBIC4604E

CO-14

RADIATOR

Revision: 2006 July

2007 Murano

Remove radiator hoses (upper and lower) and reservoir tank hose.

CAUTION:

Be careful not to allow engine coolant to contact drive belts.

Remove reservoir tank and bracket.

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

SC-4, "BAT-

TERY"

Remove radiator upper clips by pulling the tabs outside to
release the lock.
Do not pull the tabs outside excessively to prevent it from
damaging.

10. Remove mounting rubbers (upper) from mounting pins on radiator.

11. Lift up and remove radiator and radiator cooling fan assembly.

CAUTION:

Do not damage or scratch A/C condenser and radiator core when removing.

12. Remove radiator cooling fan assembly from radiator.

INSTALLATION

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

Radiator Upper Clip

Install radiator upper clip on radiator core connection as follows:

Install mounting rubbers (upper) on mounting pins of radiator.

Align radiator upper clip with radiator core connection, then insert radiator upper clip straight into radiator
core connections until a click is heard.

After connecting radiator upper clip, use the following method to make sure it is fully connected.

●

Visually confirm that two radiator upper clips are connected to radiator core connections.

●

Move radiator upper clip and the radiator forward and backward to make sure they are securely con-
nected.

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 and CVT fluid.

PBIC1216E

PBIC1241E

RADIATOR

CO-15

Revision: 2006 July

2007 Murano

Checking Radiator Cap

NBS002AN

●

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
radiator cap negative-pressure valve.

–

Make sure that there are no unusualness in the opening and
closing conditions of negative-pressure valve.

●

Check radiator cap relief pressure.

–

When connecting radiator cap to the radiator cap tester adapter
(SST) and the radiator cap tester (commercial service tool),
apply engine coolant to the cap seal surface.

●

Replace radiator cap if there is an unusualness related to the above three.

CAUTION:

When installing radiator cap, thoroughly wipe out the radiator filler neck to remove any waxy residue
or foreign material.

Checking Radiator

NBS002AO

Check radiator for mud or clogging. If necessary, clean radiator as follows.

●

Be careful not to bend or damage radiator fins.

●

When radiator is cleaned without removal, remove all surrounding parts such as cooling fan, radiator
shroud and horns. Then tape harness and connectors to prevent water from entering.

Apply water by hose to the back side of the radiator core vertically downward.

Apply water again to all radiator core surfaces once per minute.

Stop washing if any stains no longer flow out from radiator.

Blow air into the back side of radiator core vertically downward.

●

Use compressed air lower than 490 kPa (5 kg/cm

, 71 psi) and keep distance more than 30 cm (11.8

in).

Blow air again into all the radiator core surfaces once per minute until no water sprays out.

PBIC2816E

SMA967B

Standard:

78 - 98 kPa (0.8 - 1.0 kg/cm

, 11 - 14 psi)

Limit:

59 kPa (0.6 kg/cm

, 9 psi)

SLC755A

CO-16

RADIATOR (ALUMINUM TYPE)

Revision: 2006 July

2007 Murano

RADIATOR (ALUMINUM TYPE)

PFP:21460

Disassembly and Assembly

NBS002AP

PREPARATION

Attach spacer to tip of the 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.

Make sure that when the radiator plate pliers A [SST: KV99103510 (

—

)] are closed dimension H

′′

approx. 7.6 mm (0.299 in).

Adjust dimension H

′′

with spacer, if necessary.

DISASSEMBLY

Remove upper and lower tanks with the radiator plate pliers B
(SST).

CAUTION:

Do not disassemble lower tank and CVT fluid cooler.
NOTE:
Regard lower tank and CVT fluid cooler as an assembly.

Upper tank

Sealing rubber

Core

Lower tank (with CVT fluid cooler)

PBIC2539E

SLC655CB

SLC903-A

RADIATOR (ALUMINUM TYPE)

CO-17

Revision: 2006 July

2007 Murano

●

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.

Remove sealing rubber.

Make sure the edge stands straight up.

ASSEMBLY

Clean contact portion of tank.

SLC893

SLC930

SLC931

SLC932

CO-18

RADIATOR (ALUMINUM TYPE)

Revision: 2006 July

2007 Murano

Install new sealing rubber while pushing it with fingers.

CAUTION:

Be careful not to twist sealing rubber.

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

Revision: 2006 July

2007 Murano

Make sure that the rim is completely crimped down.

Make sure that there is no leakage.
Refer to

CO-19, "INSPECTION"

INSPECTION

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.

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

, 23 psi)

SLC933-A

SLC934

CO-20

COOLING FAN

Revision: 2006 July

2007 Murano

COOLING FAN

PFP:21140

Removal and Installation

NBS002AQ

REMOVAL

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.

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

EM-16, "AIR CLEANER

AND AIR DUCT"

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

CO-13, "RADIATOR"

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

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

SC-4, "BAT-

TERY"

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-498, "DTC P1217 ENGINE OVER TEMPERA-

TURE"

Cooling fan (RH)

Cooling fan (LH)

Fan shroud

Fan motor

PBIC2694E

COOLING FAN

CO-21

Revision: 2006 July

2007 Murano

Disassembly and Assembly

NBS002AR

DISASSEMBLY

Remove cooling fans (RH and LH) from fan motors.

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 July

2007 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

Remove engine cover. Refer to

EM-18, "INTAKE MANIFOLD COLLECTOR"

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

EM-16, "AIR CLEANER AND

AIR DUCT"

Remove undercover and splash guard (RH).

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.

Remove drive belts. Refer to

EM-13, "DRIVE BELTS"

Remove reservoir tank of radiator. Refer to

CO-13, "RADIATOR"

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

PS-36, "HYDRAULIC LINE"

Support oil pan (lower) bottom with transmission jack.

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

EM-108, "ENGINE

ASSEMBLY"

Water pump

Timing chain tensioner (primary)

Chain tensioner cover

Water drain plug (front)

Water pump cover

O-ring

PBIC2695E

WATER PUMP

CO-23

Revision: 2006 July

2007 Murano

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:

Remove lower mounting bolt.

CAUTION:

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

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).

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

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

Revision: 2006 July

2007 Murano

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.

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.

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

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

Revision: 2006 July

2007 Murano

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.

Install timing chain tensioner (primary) as follows:

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

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.

Push plunger into the inside of tensioner body.

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

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.

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.

Remove stopper pin.

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

Install chain tensioner cover and water pump cover as follows:

SLC031B

PBIC4820E

PBIC3568E

PBIC3577E

CO-26

WATER PUMP

Revision: 2006 July

2007 Murano

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.

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

CAUTION:

Attaching should be done within 5 minutes after coating.

Tighten mounting bolts.

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-46, "RECOMMENDED CHEMICAL

PRODUCTS AND SEALANTS"

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

Revision: 2006 July

2007 Murano

WATER INLET AND THERMOSTAT ASSEMBLY

PFP:21200

Removal and Installation

NBS002AT

REMOVAL

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.

Remove reservoir tank of radiator, and move it aside.

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

Remove water inlet and thermostat assembly.

CAUTION:

Do not disassemble water inlet and thermostat assembly.
Replace them as a unit, if necessary.

Gasket

Water inlet and thermostat assembly

Radiator hose (lower)

Water hose

PBIC2696E

SLC962AB

CO-28

WATER INLET AND THERMOSTAT ASSEMBLY

Revision: 2006 July

2007 Murano

INSPECTION AFTER REMOVAL

Check valve seating condition at ordinary room temperatures. It should seat tightly.

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

Maximum valve lift

8.6 mm / 95

C (0.339 in / 203

Valve closing temperature

C (171

SLC949A

Nissan Murano Z50 (2007 year). Manual - part 45