Nissan Murano Z50 (2003 year). Manual — part 59
RADIATOR
CO-13
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9.
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 from the mounting pins on the radia-
tor.
11. Lift up and remove the radiator.
CAUTION:
Do not damage or scratch air conditioner condenser and radiator core when removing.
INSTALLATION
●
Install in the reverse order of removal paying attention to the following.
Installation of Radiator Upper Clip
●
Install radiator upper clip on radiator core connection with the
following procedure:
1.
Install the mounting rubbers on mounting pins of radiator.
2.
Align the radiator upper clip with the radiator core connection,
then insert the radiator upper clip straight into the radiator core
connections until a click is heard.
3.
After connecting the radiator upper clip, use the following
method to make sure it is fully connected.
●
Visually confirm that the two radiator upper clips are con-
nected to the radiator core connections.
●
Move the radiator upper clip and the radiator forward and
backward to make sure they are securely connected.
PBIC1216E
PBIC1241E
CO-14
RADIATOR
Revision; 2004 April
2003 Murano
Disassembly and Assembly Radiator Cooling Fan
ABS0035I
DISASSEMBLY
1.
Remove fan from fan motor.
2.
Remove cooling fan motor from fan shroud.
ASSEMBLY
●
Install in the reverse order of removal.
Checking Radiator Cap
ABS007ZV
1.
Pull the negative-pressure valve to open it and check that it closes completely when released.
●
Check that there is no dirt or damage on the valve seat of the
radiator cap negative-pressure valve.
●
Check that there are no unusualness in the opening and clos-
ing conditions of the negative-pressure valve.
1.
Cooling fan
2.
Fan shroud
3.
Fan motors
PBIC1207E
SMA967B
RADIATOR
CO-15
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2.
Check radiator cap relief pressure.
●
When connecting the radiator cap to the tester, apply engine
coolant to the cap seal surface.
●
Replace the radiator cap if there is an unusualness in the neg-
ative-pressure valve, or if the open-valve pressure is outside
of the limit.
Checking Radiator
ABS007ZW
Check radiator for mud or clogging. If necessary, clean radiator as follows.
●
Be careful not to bend or damage the radiator fins.
●
When radiator is cleaned without removal, remove all surrounding parts such as cooling fan, radiator
shroud and horns. Then tape the harness and electrical connectors to prevent water from entering.
1.
Apply water by hose to the back side of the radiator core vertically downward.
2.
Apply water again to all radiator core surface once per minute.
3.
Stop washing if any stains no longer flow out from the radiator.
4.
Blow air into the back side of radiator core vertically downward.
●
Use compressed air lower than 490 kPa (5 kg/cm
2
, 71 psi) and keep distance more than 30 cm (11.8
in).
5.
Blow air again into all the radiator core surfaces once per minute until no water sprays out.
Standard:
78 - 98 kPa (0.8 - 1.0 kg/cm
2
, 11 - 14 psi)
Limit:
59 kPa (0.6 kg/cm
2
, 9 psi)
SLC755A
CO-16
RADIATOR (ALUMINUM TYPE)
Revision; 2004 April
2003 Murano
RADIATOR (ALUMINUM TYPE)
PFP:21460
Disassembly and Assembly
ABS004RT
PREPARATION
1.
Attach the spacer to the tip of the radiator plate pliers A.
Spacer specification: 1.5 mm (0.059 in) thick x 18 mm (0.71 in)
wide x 8.5 mm (0.335 in) long.
2.
Make sure that when radiator plate pliers A are closed dimen-
sion H
′′
is approx. 7.6 mm (0.299 in).
3.
Adjust dimension H
′′
with the spacer, if necessary.
DISASSEMBLY
1.
Remove upper and lower tanks with Tool.
SLC511B
SLC655CB
SLC903-A
RADIATOR (ALUMINUM TYPE)
CO-17
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Grip the crimped edge and bend it upwards so that Tool slips
off.
Do not bend excessively.
●
In areas where Tool cannot be used, use a screwdriver to
bend the edge up.
Be careful not to damage tank.
2.
Remove sealing rubber.
3.
Make sure the edge stands straight up.
4.
Remove oil cooler from tank.
ASSEMBLY
1.
Install oil cooler.
Pay attention to direction of conical washer.
SLC893
SLC930
SLC931
SLC894
CO-18
RADIATOR (ALUMINUM TYPE)
Revision; 2004 April
2003 Murano
2.
Clean contact portion of tank.
3.
Install sealing rubber.
Push it in with fingers.
Be careful not to twist sealing rubber.
4.
Caulk tank in specified sequence with Tool.
SLC932
SLC917A
SLC904-A
SLC896
RADIATOR (ALUMINUM TYPE)
CO-19
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●
Use pliers in the locations where Tool cannot be used.
5.
Make sure that the rim is completely crimped down.
6.
Confirm that there is no leakage.
Refer to
INSPECTION
1.
Apply pressure with Tool.
WARNING:
To prevent the risk of the hose coming undone while under
pressure, securely fasten it down with a hose clamp.
Attach a hose to the oil cooler to seal its inlet and outlet.
2.
Check for leakage by soaking radiator in water container.
SLC897
Standard height “H”
: 8.0 - 8.4 mm (0.315 - 0.331 in)
SLC554A
Specified pressure value
: 157 kPa (1.6 kg/cm
2
, 23 psi)
SLC933-A
SLC934
CO-20
WATER PUMP
Revision; 2004 April
2003 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.
REMOVAL
1.
Remove drive belts. Refer to
EM-12, "Removal and Installation"
.
2.
Remove undercover.
3.
Drain engine coolant from radiator. Refer to
MA-15, "Changing Engine Coolant"
.
CAUTION:
Perform when the engine is cold.
4.
Remove water drain plug on water pump side of cylinder block.
5.
Support lower oil pan bottom with a transmission jack.
6.
Remove RH engine mounting insulator and mounting bracket. Refer to
7.
Remove idler pulley bracket. Refer to
8.
Remove chain tensioner cover and water pump cover.
SLC523B
PBIC0846E
WATER PUMP
CO-21
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9.
Remove the chain tensioner assembly in the following proce-
dure.
a.
Pull the lever down and release the plunger stopper tab.
b.
Insert the stopper pin into the tensioner body hole to hold the
lever and keep the stopper tab released.
c.
Insert the plunger into the tensioner body by pressing the timing
chain slack guide.
d.
Keep the slack guide pressed and hold the plunger in by push-
ing the stopper pin deeper through the lever and into the ten-
sioner body hole.
e.
Turn crankshaft pulley approximately 20
°
clockwise so that the
timing chain on the chain tensioner side is loose.
10. Remove chain tensioner.
CAUTION:
Be careful not to drop mounting bolts inside chain case.
11. Remove the 3 water pump fixing bolts. Secure a gap between
water pump gear and timing chain, by turning crankshaft pulley
approximately 20
°
counterclockwise.
12. Screw M8 bolts [pitch: 1.25mm (0.049in) length: Approx. 50 mm
(1.97in)] 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.
●
Pull straight out while preventing vane from contacting socket
in installation area.
●
Remove water pump without causing sprocket to contact tim-
ing chain.
13. Remove M8 bolts and O-rings from water pump.
SLC444B
PBIC0848E
PBIC0849E
PBIC0850E
JLC357B
CO-22
WATER PUMP
Revision; 2004 April
2003 Murano
INSPECTION AFTER REMOVAL
1.
Check for badly rusted or corroded water pump body assembly.
2.
Check for rough operation due to excessive end play.
INSTALLATION
1.
Install new O-rings to water pump.
2.
Apply engine oil and engine coolant to the O-rings as shown.
●
Locate the O-ring with white paint mark to engine front side.
3.
Install the water pump.
●
Do not allow cylinder block to nip the O-rings when
installing the water pump.
●
Check that timing chain and water pump sprocket are
engaged.
●
Insert water pump by tightening mounting bolts alternately
and evenly.
4.
Remove dust and foreign material completely from backside of chain tensioner and from installation area
of rear timing chain case.
5.
Turn the crankshaft pulley clockwise so that the timing chain on the timing chain tensioner side is loose.
●
When installing the timing chain tensioner, engine oil should be applied to the oil hole and ten-
sioner.
6.
Install the timing chain tensioner.
7.
Remove the stopper pin.
SLC943A
PBIC1397E
SLC031B
SLC448B
WATER PUMP
CO-23
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8.
Install chain tensioner cover and water pump cover.
a.
Before installing, remove all traces of liquid gasket from mating
surface of water pump cover and chain tensioner cover using a
scraper.
Also remove traces of liquid gasket from the mating surface of
the front cover.
b.
Apply a continuous bead of liquid gasket, to mating surface of
chain tensioner cover and water pump cover. Use Genuine RTV
Silicon Sealant or equivalent Refer to
CHEMICAL PRODUCTS AND SEALANTS"
9.
Install water drain plug on water pump side of cylinder block.
10. Installation is 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 the chain tensioner. The
engine may produce a rattling noise. This indicates that
air still remains in the chamber and is not a matter of con-
cern.
SLC446B
PBIC1283E
CO-24
THERMOSTAT AND THERMOSTAT HOUSING
Revision; 2004 April
2003 Murano
THERMOSTAT AND THERMOSTAT HOUSING
PFP:21200
Removal and Installation
ABS00354
REMOVAL
1.
Remove undercover.
2.
Drain engine coolant from radiator. Refer to
MA-15, "Changing Engine Coolant"
.
CAUTION:
●
Perform when the engine is cold.
●
Be careful not to get engine coolant on drive belt.
3.
Remove radiator reservoir tank and move IPDM E/R aside.
4.
Remove water drain plug on water pump side of the engine.
5.
Disconnect lower radiator hose and oil cooler water hose.
6.
Remove water inlet and thermostat assembly.
●
Do not disassemble water inlet and thermostat assembly.
Replace them as a unit, if necessary.
1.
Gasket
2.
Water inlet and thermostat assembly
PBIC1214E
SLC962AB
THERMOSTAT AND THERMOSTAT HOUSING
CO-25
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INSPECTION AFTER REMOVAL
1.
Check valve seating condition at ordinary room temperatures. It should seat tightly.
2.
Check valve opening temperature and maximum valve lift.
3.
Then check if valve closes at 5
°
C (9
°
F) below valve opening
temperature.
INSTALLATION
Install in the reverse order of removal.
●
After installation, run engine for a few minutes, and check for leaks.
●
Be careful not to spill engine coolant over engine compartment. Use a rag to absorb engine cool-
ant.
Thermostat
Standard Values
Valve opening temperature
82
°
C (180
°
F)
Valve lift
8.6 mm / 95
°
C (0.339 in / 203
°
F)
SLC949A
CO-26
WATER OUTLET AND WATER PIPING
Revision; 2004 April
2003 Murano
WATER OUTLET AND WATER PIPING
PFP:11060
Removal and Installation
ABS0035E
REMOVAL
1.
Remove undercover.
2.
Drain engine coolant from drain plugs on radiator and both sides of cylinder block. Refer to
.
CAUTION:
Perform when the engine is cold.
3.
Remove engine cover. Refer to
4.
Remove air duct and air cleaner case assembly. Refer to
EM-14, "Removal and Installation"
5.
Remove battery and battery tray.
6.
Remove CVT fluid cooler control valve assembly. Refer to
7.
Move CVT control cable aside. Refer to
CVT-182, "SHIFT CONTROL SYSTEM"
8.
Remove radiator upper hose and heater hose.
9.
Remove water outlet and water pipes.
INSTALLATION
Install in the reverse order of removal.
●
Securely insert each hose, and install a clamp at a position where it does not interfere with the pipe bulge.
●
When inserting a water pipe into water connector, apply neutral detergent to O-ring.
1.
Water outlet
2.
Gasket
3.
O-ring
4.
Heater pipe
5.
Water connector
6.
Water bypass pipe
7.
Water bypass hose
8.
Engine coolant temperature sensor
9.
Washer
PBIC1215E
SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)
PFP:00100
Engine Coolant Capacity (Approximate)
ABS0035J
Unit:
(US qt, Imp qt)
Thermostat
ABS0035K
Radiator
ABS0035L
Unit: kPa (kg/cm
2
, psi)
Tightening Torque
ABS0035M
Unit: N·m (kg-m, ft-lb)
Unit: N·m (kg-m, in-lb)*
Engine coolant capacity (With reservoir tank at MAX level)
9.2 (9-3/4, 8-1/8)
Reservoir tank engine coolant capacity (at MAX level)
0.8 (7/8 , 3/4)
Valve opening temperature
82
°
C (180
°
F)
Valve lift
8.6 mm / 95
°
C (0.339 in / 203
°
F)
Cap relief pressure
Standard
78 - 98 (0.8 - 1.0, 11 - 14)
Limit
59 (0.6, 9)
Leakage test pressure
157 (1.6, 23)
Radiator drain plug
Cylinder block drain plug (LH)
Cylinder block drain plug (RH)
Cylinder block drain plug (front side)
0.78 - 1.56 (0.08 - 0.15, 7 - 13)*
59 - 65 (6.1 - 6.7, 44 - 48)
24.5 - 29.4 (2.5 - 2.9, 18 - 21)
7.8 - 11.8 ( 0.8 - 1.2, 69 - 104)*
Fan shroud
Cooling fan
Fan motor
3.9 - 4.5 (0.40 - 0.45, 35 - 39)*
2.9 - 3.9 (0.30 - 0.39, 26 - 34)*
3.9 - 4.9 (0.40 - 0.49, 35 - 43)*
Water pump
Water pump cover
Chain tensioner cover
Chain tensioner
8.5 - 10.7 (0.86 - 1.10, 75 - 95)*
10 - 13 (1.0 - 1.3, 87 - 113)*
10 - 13 (1.0 - 1.3, 87 - 113)*
6.9 - 9.3 (0.70 - 0.95, 61 - 82)*
Water inlet and thermostat assembly
8.4 - 11.2 (0.86 - 1.14, 74.6 - 99.0)*
Water outlet
Water connector
Engine coolant temperature sensor
22 - 27 (2.2 - 2.8, 16 - 20)
8.4 - 10.8 (0.9 - 1.1, 7.5 - 95)*
19.6 - 29.4 (2.0 - 2.9, 15 - 21)
CO-28
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision; 2004 April
2003 Murano
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