Nissan Altima L32. Manual - part 202

WATER PUMP

CO-45

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5. Turn the crankshaft pulley approximately 20

° clockwise so that

the timing chain on the timing chain tensioner side is loose.

NOTE:

When installing the timing chain tensioner, engine oil should be

applied to the oil hole and tensioner.

6. Install the timing chain tensioner.
7. Remove the stopper pin.

8. Install IVT control valve cover and water pump cover.
a. Before installing, remove all traces of sealant from mating surface of water pump cover and IVT control

valve cover using a scraper.

Also remove traces of sealant from the mating surface of the front cover.

b. Apply a continuous bead of RTV Silicone Sealant or equivalent, to mating surface of IVT control valve

cover and water pump cover. Refer to 

GI-15, "Recommended Chemical Products and Sealants"

.

9. Install water drain plug on water pump side of cylinder block. Refer to 

CO-35, "Changing Engine Coolant"

.

10. Install idler pulley. Refer to 

EM-122, "Removal and Installation of Drive Belt Auto-tensioner"

.

11. Installation of remaining components is in the reverse order of removal.

• After installation refill engine coolant and check for leaks. Refer to 

CO-35, "Changing Engine Coolant"

and 

CO-34, "System Inspection"

.

CAUTION:

Do not spill coolant in engine compartment. Use a shop cloth to absorb coolant.

• 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 concern.

PBIC0848E

SLC448B

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THERMOSTAT AND THERMOSTAT HOUSING

THERMOSTAT AND THERMOSTAT HOUSING

Removal and Installation

INFOID:0000000004205469

WARNING:

Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure

coolant escaping from the radiator. 

REMOVAL

CAUTION:

Perform when engine is cool.
1. Drain engine coolant from the radiator. Refer to 

CO-35, "Changing Engine Coolant"

.

2. Remove drive belts. Refer to 

EM-121, "Removal and Installation"

.

3. Remove water drain plug on water pump side of the engine. Refer to 

EM-206, "Disassembly and Assem-

bly"

.

4. Disconnect lower radiator hose.
5. Remove engine coolant inlet and thermostat assembly.

• Do not disassemble engine coolant inlet and thermostat.

Replace them as a unit, if necessary.

INSPECTION AFTER REMOVAL

AWBIA0180GB

1.

Gasket

2.

Thermostat assembly

SLC962AA

THERMOSTAT AND THERMOSTAT HOUSING

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• Place a thread so that it is caught in the valves of the thermostat.

Immerse fully in a container filled with water. Heat while stirring. 

• The valve opening temperature is the temperature at which the

valve opens and the falls from the thread.

• Continue heating. Check the full-open lift amount.

NOTE:

The full-open lift amount standard temperature for the thermostat is

the reference value.

•  After checking the full-open lift amount, lower the water tempera-

ture and check the valve closing temperature. 

INSTALLATION

Installation is in the reverse order of removal.

• Install thermostat with jiggle valve facing upward.

• After installation refill engine coolant and check for leaks. Refer to

CO-35, "Changing Engine Coolant"

 and 

CO-34, "System Inspec-

tion"

.

CAUTION:

Do not spill coolant in engine compartment. Use a shop cloth

to absorb coolant.

SLC949A

Thermostat

Standard Values

Valve opening temperature

82

°C (180°F)

Full-open lift amount

8.6 mm / 95

°C (0.339 in / 203°F)

Valve closing temperature

77

°C (171°F)

SLC948A

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WATER OUTLET AND WATER PIPING

WATER OUTLET AND WATER PIPING

Removal and Installation

INFOID:0000000004205470

WARNING:

Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure

coolant escaping from the radiator. 

REMOVAL

CAUTION:

Perform when the engine is cold.
1. Drain engine coolant from drain plugs on radiator and both sides of cylinder block. Refer to 

CO-35,

"Changing Engine Coolant"

.

2. Remove engine cover using power tool. 
3. Remove air duct and air cleaner case assembly. Refer to 

EM-129, "Removal and Installation"

.

4. Remove radiator upper hose and heater hose.
5. Remove connector(s) from heater pipe.
6. Disconnect engine coolant temperature sensor electrical connector on water outlet.
7. Remove water outlet, heater pipe, water connector, and water bypass pipe nuts and bolts.

INSTALLATION

1. Installation is 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 heater pipe and water bypass pipe into water connector, apply neutral detergent to new

O-rings.

CAUTION:

ALBIA0476GB

1.

Water outlet

2.

Gasket

3.

O-ring

4.

Heater pipe

5.

Water connector

6.

Water bypass pipe

7.

Engine coolant temperature sensor

8.

Washer

A.

To electric throttle control actuator

B.

To heater

C. To radiator

D.

From heater or transmission oil cool-
er (if equipped)