Cylinder block NISSAN TEANA 2003 User Guide

CO-22
[QR]
WATER PUMP

WATE R P U M PPFP:21020
Removal and InstallationBBS005AA
REMOVAL
1. Drain engine coolant from radiator drain plug at the bottom of radiator and from water drain plug on engine
cylinder block. Refer to CO-10, "
Changing Engine Coolant" and EM-81, "CYLINDER BLOCK" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belt.
2. Remove the following parts.

Undercover and splash guard (RH)

Drive belt; Refer to EM-14, "DRIVE BELTS" .

Drive belt auto-tensioner; Refer to EM-15, "Removal and Installation of Drive Belt Auto-Tensioner" .
3. Remove water pump.

Engine coolant will leak from cylinder block, so have a receptacle ready below.
CAUTION:

Handle water pump vane so that it does not contact any other parts.

Water pump cannot be disassembled and should be replaced as a unit.
4. Remove water pump housing with the following procedure;
a. Remove alternator. Refer to SC-27, "
CHARGING SYSTEM" .
b. Remove oil level gauge and oil level gauge guide. Refer to EM-26, "
OIL PAN AND OIL STRAINER" .
CAUTION:
Plug the oil level gauge guide opening to prevent oil pan from entering foreign materials.
c. Remove mounting bolts for water pipe.
d. Remove water pump housing.
5. Remove exhaust manifold and three way catalyst assembly. Refer to EM-23, "
EXHAUST MANIFOLD
AND THREE WAY CATALYST" .
6. Remove water pipe.
PBIC2253E
1. Water pump 2. Gasket 3. Gasket
4. Water pump housing 5. Gasket 6. Water pipe
7. O-ring

WATER PUMP
CO-23
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INSPECTION AFTER REMOVAL

Visually check if there is no significant dirt or rusting on water
pump body and vane.

Make sure that there is no looseness in vane shaft, and that it
turns smoothly when rotated by hand.

Replace water pump, if necessary.
INSTALLATION
Note the following, and install in the reverse order of removal.

When inserting water pipe end into cylinder block, apply a neutral detergent to O-ring. Then insert it imme-
diately.
INSPECTION AFTER INSTALLATION

Check for engine coolant leaks using radiator cap tester adapter [SST: EG17650301] and radiator cap
tester (commercial service tool). Refer to CO-10, "
LEAK CHECK" .

Start and warm up engine. Visually check if there is no leaks of engine coolant.
KBIA0155E

CO-24
[QR]
THERMOSTAT AND WATER CONTROL VALVE

THERMOSTAT AND WATER CONTROL VALVEPFP:21200
Removal and InstallationBBS005AB
REMOVAL
1. Drain engine coolant from radiator drain plug at the bottom of radiator and from water drain plug on engine
cylinder block. Refer to CO-10, "
Changing Engine Coolant" and EM-81, "CYLINDER BLOCK" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belt.
2. Disconnect radiator hose (lower) at water inlet side. Refer to CO-13, "
RADIATOR" .
3. Remove water inlet and thermostat.
4. Remove water control valve with the following procedure:
a. Disconnect radiator hose (upper) at water control valve housing (water outlet) side.
b. Disconnect harness connector from engine coolant temperature sensor.
c. Remove heater pipe and heater hose.
d. After removing water control valve housing (water outlet), remove water control valve.
1. Thermostat 2. O-ring 3. Water inlet
4. Water control valve 5. O-ring 6. Gasket
7. Water control valve housing (water outlet) 8. Washer 9. Engine coolant temperature sensor
10. Heater hose 11. O-ring 12. Heater pipe
13. Heater hose
PBIC3519E

THERMOSTAT AND WATER CONTROL VALVE
CO-25
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INSPECTION AFTER REMOVAL

Place a string so that it is caught in the valves of thermostat and
water control valve. Immerse fully in a container filled with water.
Heat while stirring. (The example in the figure shows thermo-
stat.)

The valve opening temperature is the temperature at which the
valve opens and falls from the thread.

Continue heating. Check the maximum valve lift amount.
NOTE:
The maximum valve lift amount standard temperature for water
control valve is the reference value.

After checking the maximum valve lift amount, lower the water
temperature and check the valve closing temperature.
Standard:

If out of the standard, replace either or both thermostat and water control valve.
INSTALLATION
Note the following, and install in the reverse order of removal.
Thermostat and Water Control Valve

Install thermostat with making rubber ring groove fit to thermo-
stat flange with the whole circumference. (The example in the
figure shows thermostat.)
NOTE:
Same procedure is applied for installation of water control valve.

Install thermostat with jiggle valve facing upwards. (The position
deviation may be within the range of 20 degrees as shown in the
figure.)

Install water control valve with the arrow facing up and the frame
center part facing upwards. (The position deviation may be
within the range of 20 degrees as shown in the figure.)
Heater Pipe Installation
Apply a neutral detergent to O-ring, then quickly insert the insertion part of heater pipe into cylinder block.
INSPECTION AFTER INSTALLATION

Check for leaks of engine coolant using radiator cap tester adapter [SST: EG17650301] and a radiator cap
tester (commercial service tool). Refer to CO-10, "
LEAK CHECK" .

Start and warm up engine. Visually check if there is no leaks of engine coolant and A/T fluid.
SLC252B
Items Thermostat Water control valve
Valve opening temperature 80.5 - 83.5°C (177 - 182°F) 93.5 - 96.5°C (200 - 206°F)
Maximum valve lift 8 mm/ 95°C (0.315 in/ 203°F) 8 mm/ 108°C (0.315 in/ 226°F)
Valve closing temperature 77°C (171°F) 90°C (194°F)
PBIC0157E
PBIC0158E

CO-34
[VQ]
ENGINE COOLANT

ENGINE COOLANTPFP:KQ100
InspectionBBS004WY
LEVEL CHECK

Check if the reservoir tank engine coolant level is within the
“MIN” to “MAX” range when engine is cool.

Adjust the engine coolant level as necessary.
LEAK CHECK

To check for leaks, apply pressure to the cooling system with
radiator cap tester (commercial service tool) and radiator cap
tester adapter (SST).
WARNING:
Do not remove radiator cap when engine is hot. Serious
burns could occur from high-pressure engine coolant
escaping from radiator.
CAUTION:
Higher testing pressure than specified may cause radiator
damage.
NOTE:
In a case engine coolant decreases, replenish radiator with engine coolant.

If anything is found, repair or replace damaged parts.
Changing Engine CoolantBBS004WZ
WARNING:

To avoid being scalded, do not change engine coolant when engine is hot.

Wrap a thick cloth around radiator cap and carefully remove the cap. First, turn the cap a quarter
of a turn to release built-up pressure. Then turn the cap all the way.

Be careful not to allow engine coolant to contact drive belts.
DRAINING ENGINE COOLANT
1. Remove grommet from undercover.
2. Open radiator drain plug at the bottom of radiator, and then remove radiator cap.
When drain all of engine coolant in the system, open water drain plugs on cylinder block. Refer to
EM-229, "
DISASSEMBLY" .
3. Remove reservoir tank as necessary, and drain engine coolant and clean reservoir tank before installing.
SMA412B
Testing pressure
: 157 kPa (1.57 bar, 1.6 kg/cm
2 , 23 psi)
SLC756AA
PBIC2512E

ENGINE COOLANT
CO-35
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4. Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
If contaminated, flush the engine cooling system. Refer to CO-36, "
FLUSHING COOLING SYSTEM" .
REFILLING ENGINE COOLANT
1. Install reservoir tank if removed, and radiator drain plug.
CAUTION:
Be sure to clean drain plug and install with new O-ring.
If water drain plugs on cylinder block are removed, close and tighten them. Refer to EM-233,
"ASSEMBLY" .
2. Make sure that each hose clamp has been firmly tightened.
3. Remove air duct assembly. Refer to EM-131, "
AIR CLEANER AND AIR DUCT" .
4. Disconnect heater hose (left side of vehicle) at the position in
the figure.

Enhance heater hose as high as possible.
5. Fill radiator and reservoir tank to specified level.
CAUTION:
Never adhere the engine coolant to electronic equipments
(alternator etc.).

Pour engine coolant through engine coolant filler neck
slowly of less than 2 (1-3/4 lmp qt) a minute to allow air
in system to escape.

Use NISSAN Genuine Engine Coolant or equivalent
mixed with water (distilled or demineralized). Refer to
MA-14, "
RECOMMENDED FLUIDS AND LUBRICANTS".

When engine coolant overflows disconnected heater hose, connect heater hose, and continue filling the
engine coolant.
6. Install air duct assembly. Refer to EM-131, "
AIR CLEANER AND AIR DUCT" .
7. Install radiator cap.Radiator drain plug:
: 1.2 N·m (0.12 kg-m, 11 in-lb)
PBIC2810E
Engine coolant capacity
(With reservoir tank at “MAX” level)
: Approx. 8.2 (7-1/4 lmp qt) [VQ23DE]
: Approx. 8.8 (7-3/4 lmp qt) [VQ35DE]SMA182B
Reservoir tank engine coolant capacity
(At “MAX” level)
: 0.8 (3/4 lmp qt)
SMA412B

CO-36
[VQ]
ENGINE COOLANT

8. Warm up until opening thermostat. Standard for warming-up time is approximately 10 minutes at 3000
rpm.

Make sure thermostat opening condition by touching radiator hose (lower) to see a flow of warm water.
CAUTION:
Watch water temperature gauge so as not to overheat engine.
9. Stop engine and cool down to less than approximately 50°C (122°F).

Cool down using fan to reduce the time.

If necessary, refill radiator up to filler neck with engine coolant.
10. Refill reservoir tank to “MAX” level line with engine coolant.
11. Repeat steps 3 through 9 two or more times with radiator cap installed until engine coolant level no longer
drops.
12. Check cooling system for leaks with engine running.
13. Warm up engine, and check for sound of engine coolant flow while running engine from idle up to 3,000
rpm with heater temperature controller set at several position between “COOL” and “WARM”.

Sound may be noticeable at heater unit.
14. Repeat step 13 three times.
15. If sound is heard, bleed air from cooling system by repeating step 3 through 9 until engine coolant level no
longer drops.
FLUSHING COOLING SYSTEM
1. Install reservoir tank if removed, and radiator drain plug.
CAUTION:
Be sure to clean drain plug and install with new O-ring.
If cylinder block water drain plugs are removed, close and tighten them. Refer to EM-233, "
ASSEM-
BLY" .
2. Remove air duct assembly. Refer to EM-131, "
AIR CLEANER AND AIR DUCT" .
3. Disconnect heater hose (left side of vehicle) at the position in
the figure.

Enhance heater hose as high as possible.
4. Fill radiator and reservoir tank with water and install radiator cap.

When engine coolant overflows disconnected heater hose, connect heater hose, and continue filling the
engine coolant.
5. Install air duct assembly. Refer to EM-131, "
AIR CLEANER AND AIR DUCT" .
6. Run engine and warm it up to normal operating temperature.
7. Rev engine two or three times under no-load.
8. Stop engine and wait until it cools down.
9. Drain water from the system. Refer to CO-34, "
DRAINING ENGINE COOLANT" .
10. Repeat steps 1 through 9 until clear water begins to drain from radiator.Radiator drain plug:
: 1.2 N·m (0.12 kg-m, 11 in-lb)
PBIC2810E

WATER PUMP
CO-47
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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

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

CO-50
[VQ]
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