Index Manuals Nissan Murano Z50 (2004 year) - Service and Repair Manual

Content .. 46 47 48 49 ..

Nissan Murano Z50 (2004 year). Manual - part 48

RADIATOR (ALUMINUM TYPE)

CO-19

Revision: 2004 November

2004 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 radiator cap tester adapter [SST] and radia-
tor 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: 2004 November

2004 Murano

COOLING FAN

PFP:21140

Removal and Installation

ABS00D9I

REMOVAL

Drain engine coolant from radiator. Refer to

CO-9, "Changing Engine Coolant"

CAUTION:

●

Perform this step when engine is cold.

●

Do not spill engine coolant on drive belts.

Remove air duct (inlet). Refer to

EM-14, "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.

●

Cooling fans are controlled by ECM. For details, refer to .

EC-427, "DTC P1217 ENGINE OVER TEMPER-

ATURE"

Cooling fan (RH)

Cooling fan (LH)

Fan shroud

Fan motor

PBIC2694E

COOLING FAN

CO-21

Revision: 2004 November

2004 Murano

Disassembly and Assembly

ABS00D9J

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.

CO-22

WATER PUMP

Revision: 2004 November

2004 Murano

WATER PUMP

PFP:21020

Removal and Installation

ABS00353

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 radiator
cap tester (commercial service tool) and radiator cap tester adapter [SST: EG17650301 (J33984-
A)].

REMOVAL

Remove engine cover. Refer to

EM-16, "INTAKE MANIFOLD COLLECTOR"

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

EM-14, "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 engine is cold.

●

Do not spill engine coolant on drive belts.

Remove drive belts. Refer to

EM-11, "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-34, "HYDRAULIC LINE"

Support oil pan (lower) bottom with transmission jack.

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

EM-105, "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: 2004 November

2004 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 seal cutter [SST: KV10111100 (J37228)] to cut liquid gasket for removal.

12. Remove idler pulley and bracket. Refer to

EM-58, "TIMING CHAIN"

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

Pull lever down and release plunger stopper tab.

●

Plunger stopper tab can be pushed up to release (coaxial
structure with lever).

Insert stopper pin into tensioner body hole to hold lever, and
keep tab released.
NOTE:
Allen wrench [2.5 mm (0.098 in)] is used for stopper pin as an
example.

Insert plunger into tensioner body by pressing slack guide.

Keep slack guide pressed and hold plunger in by pushing stop-
per pin through the lever hole and tensioner body hole.

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

Remove mounting bolts and remove timing chain tensioner (pri-
mary).

CAUTION:

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

14. Remove water pump as follows:

PBIC2662E

PBIC2112E

PBIC1805E

PBIC2113E

CO-24

WATER PUMP

Revision: 2004 November

2004 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.

●

Replace water pump, if necessary.

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: 2004 November

2004 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:

Remove dust and foreign material completely from backside of timing chain tensioner (primary) and from
installation area of rear timing chain case.

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

Install timing chain tensioner (primary) with its stopper pin attached.

CAUTION:

Be careful not to drop mounting bolts inside 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:

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 tube presser [SST:
WS39930000 (

—

)] to mating surface of chain tensioner

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.

SLC031B

SLC448B

SLC446B

PBIC2663E

CO-26

WATER PUMP

Revision: 2004 November

2004 Murano

●

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"

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 radiator cap tester adapter [SST: EG17650301 (J33984-A)] and
radiator cap tester (commercial service tool). Refer to

CO-9, "LEAK CHECK"

●

Start and warm up engine. Visually check it there is no leaks of engine coolant.

WATER INLET AND THERMOSTAT ASSEMBLY

CO-27

Revision: 2004 November

2004 Murano

WATER INLET AND THERMOSTAT ASSEMBLY

PFP:21200

Removal and Installation

ABS00354

REMOVAL

Drain engine coolant from radiator. Refer to

CO-9, "Changing Engine Coolant"

CAUTION:

●

Perform when engine is cold.

●

Be careful not to get engine coolant on drive belt.

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 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: 2004 November

2004 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 radiator cap tester adapter [SST: EG17650301 (J33984-A)] and
radiator cap tester (commercial service tool). Refer to

CO-9, "LEAK CHECK"

●

Start and warm up engine. Visually check it 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

WATER OUTLET AND WATER PIPING

CO-29

Revision: 2004 November

2004 Murano

WATER OUTLET AND WATER PIPING

PFP:11060

Removal and Installation

ABS0035E

REMOVAL

Remove engine cover. Refer to

EM-16, "INTAKE MANIFOLD COLLECTOR"

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 engine is cold.

●

Do not spill engine coolant on drive belts.

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-14, "AIR CLEANER AND AIR DUCT"

Remove battery and battery tray. Refer to

SC-8, "Removal and Installation"

Remove CVT fluid cooler control valve assembly. Refer to

CVT-224, "TRANSAXLE ASSEMBLY"

Move CVT control cable aside. Refer to

CVT-207, "SHIFT CONTROL SYSTEM"

Remove radiator hose (upper).

Remove water hoses and heater hoses.

Disconnect harness connectors, and move harness to aside.

Radiator hose (upper)

Washer

Engine coolant temperature sensor

Heater hose

Water outlet

Water hose

Gasket

Water hose

Gasket

10. Water connector

11.

O-ring

12. Heater pipe

13. Heater hose

14. Water bypass pipe

15. Water hose

PBIC2697E

CO-30

WATER OUTLET AND WATER PIPING

Revision: 2004 November

2004 Murano

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 radiator cap tester adapter [SST: EG17650301 (J33984-A)] and
radiator cap tester (commercial service tool). Refer to

CO-9, "LEAK CHECK"

●

Start and warm up engine. Visually check it there is no leaks of engine coolant.