engine coolant NISSAN TEANA 2003 Owner's Guide

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.

U s e s e a l c u t t e r [ S S T: K V 1 0 1111 0 0 ] o r e q u i v a l e n t t o o l t o c u t l i q u i d g a s k e t f o r r e m o v e .
12. Remove idler pulley and bracket. Refer to EM-173, "
TIMING CHAIN" .
13. Remove timing chain tensioner (primary) as follows:
a. Remove lower mounting bolt.
b. Loosen upper mounting bolt slowly, and then turn timing chain
tensioner (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. Remove upper mounting bolt, and then remove timing chain ten-
sioner (primary).
CAUTION:
Be careful not to drop mounting bolts inside timing chain
case.
14. Remove water pump as follows:
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.
PBIC2516E
PBIC3562E
PBIC1193E
JLC357B

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WATER PUMP


Check for rough operation due to excessive end play.

Replace water pump, if necessary.
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.
2. Install water pump.
CAUTION:
Do not allow timing chain case to nip O-rings when install-
ing water pump.

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

Insert water pump by tightening mounting bolts alternately
and evenly.
3. Install the timing chain tensioner (primary) with the following procedure:
a. 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.
b. Push plunger into the inside of tensioner body.
c. Hold plunger in the fully compressed position by engaging
plunger stopper tab with the tip of ratchet.
d. 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.
SLC943A
PBIC1397E
SLC031B
PBIC3568E

WATER PUMP
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e. Install timing chain tensioner (primary).

Remove any dirt and foreign materials completely from the
back and the mounting surfaces of timing chain tensioner (pri-
mary).
f. Pull out stopper pin after installing, and then release plunger.
g. Make sure again that timing chain and water pump sprocket are
engaged.
4. Install chain tensioner cover and water pump cover as follows:
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 tube presser [SST:
WS39930000] to mating surface of chain tensioner cover and
water pump cover.
Use Genuine Liquid Gasket or equivalent.
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 Liquid Gasket or equivalent.
6. Install in the reverse order of removal in this step.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal/installation, slack in guide may gen-
erate a pounding noise during and just after engine start. However, this does not indicate an unusualness.
Noise will stop after hydraulic pressure rises.
INSPECTION AFTER INSTALLATION

Check for leaks of engine coolant using radiator cap tester adapter [SST: EG17650301] and radiator cap
tester (commercial service tool). Refer to CO-34, "
LEAK CHECK" .

Start and warm up engine. Visually check if there is no leaks of engine coolant.
PBIC3569E
SLC446B
PBIC2650E

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WATER INLET AND THERMOSTAT ASSEMBLY

WATER INLET AND THERMOSTAT ASSEMBLYPFP:21200
Removal and InstallationBBS004X7
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-34, "
Changing Engine Coolant" and CO-46, "WATER PUMP" .
CAUTION:

Perform this step when 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) from water inlet and thermostat assembly.
4. Disconnect oil cooler water hose from water inlet and thermostat assembly. (VQ35DE)
5. 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
PBIC2517E
SLC962AB

WATER INLET AND THERMOSTAT ASSEMBLY
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INSPECTION AFTER REMOVAL
1. Check valve seating condition at ordinary room temperature. 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 radiator cap tester adapter [SST: EG17650301] and radiator cap
tester (commercial service tool). Refer to CO-34, "
LEAK CHECK" .

Start and warm up engine. Visually check if 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

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WATER OUTLET AND WATER PIPING

WATER OUTLET AND WATER PIPINGPFP:11060
Removal and InstallationBBS004X8

Refer to GI-10, "Components" for symbol marks in the figure.
REMOVAL
1. Remove engine cover. Refer to EM-133, "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-34, "
Changing Engine Coolant" and CO-46, "WATER PUMP" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
3. Remove air duct (inlet), air cleaner case (upper) with mass air flow sensor and air duct assembly. Refer to
EM-131, "
AIR CLEANER AND AIR DUCT" .
4. Remove radiator hose (upper).
5. Remove water hoses and heater hoses.
6. Disconnect harness connectors, and move harness to aside.
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 (VQ23DE)
To CVT fluid cooler valve (VQ35DE)E. To radiator
PBIC4583J

WATER OUTLET AND WATER PIPING
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7. Remove engine coolant temperature sensor as necessary.
CAUTION:
Be careful not to damage engine coolant temperature sensor.
8. 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] and radiator cap
tester (commercial service tool). Refer to CO-34, "
LEAK CHECK" .

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

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SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00100
Standard and LimitBBS004X9
ENGINE COOLANT CAPACITY (APPROXIMATE)
Unit: (Imp qt)
RADIATOR
Unit: kPa (bar, kg/cm2 , psi)
THERMOSTAT
Engine coolant capacity (With reservoir tank at “MAX” level)8.2 (7-1/4) [VQ23DE]
8.8 (7-3/4) [VQ35DE]
Reservoir tank engine coolant capacity (At “MAX” level) 0.8 (3/4)
Cap relief pressureStandard 78 - 98 (0.78 - 0.98, 0.8 - 1.0, 11 - 14)
Limit 59 (0.59, 0.6, 9)
Leakage test pressure 157 (1.57, 1.6, 23)
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)

CVT FLUID COOLER SYSTEM
CVT-189
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CVT

CVT FLUID COOLER SYSTEMPFP:21600
CVT Fluid Cooler Removal and InstallationBCS001MX
COMPONENTS
1. Harness bracket 2. CVT fluid cooler inlet tube assembly 3. Transaxle assembly
4. Hose clamp 5. Inlet water hose 6. Hose clamp
7. Outlet water hose 8. Heater hose 9. Hose clamp
10. CVT fluid cooler outlet tube assem-
bly11. CVT fluid cooler valve assembly
A. O-ring
Refer to GI section to make sure icons (symbol marks) in the figure. Refer to GI-10, "
Components" .
However, refer to the following symbols for others.
: Apply engine coolant or equivalent.
SCIA7740E

CVT-190
CVT FLUID COOLER SYSTEM

REMOVAL
WARNING:
Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure
engine coolant escaping from the radiator.
1. Remove engine undercover.
2. Drain engine coolant. Refer to CO-34, "
Changing Engine Coolant" .
CAUTION:
Perform when the engine is cold.
3. Remove air duct (inlet). Refer to EM-131, "
Removal and Installation" .
4. Remove battery. Refer to SC-13, "
Removal and Installation" .
5. Remove air cleaner case (upper and lower), resonator, mass air flow sensor and air duct assembly. Refer
to EM-131, "
Removal and Installation" .
6. Remove fuse and fusible link block from battery bracket.
7. Remove battery bracket.
8. Remove battery bracket mounting.
SCIA2749E
SCIA2750E
SCIA2751E