Nissan Frontier D40. Manual - part 198

 

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Nissan Frontier D40. Manual - part 198

 

 

WATER PUMP

CO-53

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5.

Installation of the remaining components is in the reverse order of removal.
• Refill engine coolant system. Refer to 

CO-39, "Changing Engine Coolant"

.

• Apply liquid gasket to the thread of water drain plug (front).

Use Genuine RTV Silicone Sealant or equivalent. Refer to 

GI-22, "Recommended Chemical Prod-

ucts and Sealants"

.

• 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. Refer to 

CO-38, "System Inspection"

.

• Start and warm up engine. Visually check there are no leaks of engine coolant.

CO-54

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WATER INLET AND THERMOSTAT ASSEMBLY

WATER INLET AND THERMOSTAT ASSEMBLY

Exploded View

INFOID:0000000005276118

Removal and Installation

INFOID:0000000005276119

REMOVAL

1.

Remove the engine under cover. Refer to 

EM-138, "Removal and Installation"

.

2.

Drain engine coolant from the radiator. Refer to 

CO-39, "Changing Engine Coolant"

.

CAUTION:

• Perform this step when engine is cold.
• Do not spill engine coolant on drive belts.

3.

Remove air duct and resonator assembly and air cleaner case (upper). Refer to 

EM-139, "Removal and

Installation"

.

4.

Remove the radiator hose (upper) from the radiator.

5.

Remove the coolant reservoir hose from the radiator.

6.

Remove the fan shroud (lower) and (upper). Refer to 

CO-43, "Exploded View"

.

7.

Disconnect radiator hose (lower) and oil cooler hose from water inlet and thermostat assembly.

8.

Remove water inlet and thermostat assembly.

CAUTION:

• Do not disassemble water inlet and thermostat assembly. 
• Replace water inlet and thermostat assembly as a unit, if

necessary.

INSPECTION AFTER REMOVAL

1.

Check valve seating condition at ordinary room temperatures. It should seat tightly.

1.

Water inlet and thermostat assembly 2.

Gasket

PBIC2839E

SLC962AB

WATER INLET AND THERMOSTAT ASSEMBLY

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2.

Check valve operation.
• Place a thread so that it is caught in the valve of the thermo-

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

• The valve opening temperature is the temperature at which

the valve opens and falls from the thread.

• Continue heating. Check the full-open lift amount.
• After checking the full-open lift amount, lower the water tem-

perature and check the valve closing temperature.

• If valve seating at ordinary room temperature, or measured values are out of standard, replace water inlet

and thermostat assembly.

INSTALLATION

Installation is in the reverse order of removal, paying attention to the following.
• Do not spill engine coolant in engine room. Use rag to absorb engine coolant.

INSPECTION AFTER INSTALLATION

• Check for leaks of engine coolant. Refer to 

CO-38, "System Inspection"

.

• Start and warm up engine. Visually check for leaks of engine coolant.

SLC949A

Thermostat

Standard

Valve opening temperature

80.5 - 83.5

°

C (177 - 182

°

F)

Full-open lift amount

8.6 mm / 95

°

C (0.339 in / 203

°

F)

Valve closing temperature

77

°

C (171

°

F)

CO-56

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WATER OUTLET AND WATER PIPING

WATER OUTLET AND WATER PIPING

Exploded View

INFOID:0000000005276120

Removal and Installation

INFOID:0000000005276121

REMOVAL

1.

Drain engine coolant from radiator. Refer to 

CO-39, "Changing Engine Coolant"

.

CAUTION:

• Perform this step when engine is cold.
• Do not spill engine coolant on drive belts.

2.

Remove the intake manifold collector. Refer to 

EM-140, "Removal and Installation"

.

3.

Remove engine coolant temperature sensor as necessary.

CAUTION:

Be careful not to damage engine coolant temperature sensor.

4.

Remove water outlet, heater pipe, water bypass hoses and water pipe.

INSTALLATION

Installation is in the reverse order of removal, paying attention to the following.
• Securely insert each hose, and install clamp at a position where it does not interfere with the pipe bulge.
• When inserting water pipe into water outlet, apply neutral detergent to O-ring.

INSPECTION AFTER INSTALLATION

• Check for leaks of engine coolant. Refer to 

CO-38, "System Inspection"

.

• Start and warm up engine. Visually check for leaks of engine coolant.

1.

Engine coolant temperature sensor

2.

Washer

3.

Water outlet

4.

Heater hose

5.

O-ring

6.

Water pipe

7.

Water hose

8.

Radiator hose (upper)

9.

Water hose

10. Water hose

11.

Gasket

12.

Heater pipe

13. Heater hose

14.

Gasket

WBIA0615E

 

 

 

 

 

 

 

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