Nissan March K13. Manual - part 64

CO-20

< REMOVAL AND INSTALLATION >

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WATER PUMP

• Check visually that there is no significant dirt or rusting on water

pump body and vane (A).

• Check that there is no looseness in vane shaft, and that it turns

smoothly when rotated by hand.

• Replace water pump, if necessary.

INSPECTION AFTER INSTALLATION

• Check for leakage of engine coolant using the radiator cap tester adapter (commercial service tool) and the

radiator cap tester (commercial service tool). Refer to 

CO-9, "Inspection"

.

• Start and warm up the engine. Check visually that there is no leakage of engine coolant.

PBIC3313J

THERMOSTAT

CO-21

< REMOVAL AND INSTALLATION >

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THERMOSTAT

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Removal and Installation

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REMOVAL

1.

Drain engine coolant from radiator. Refer to 

CO-9, "Draining"

. 

CAUTION:

Perform this step when engine is cold.

2.

Remove air duct (inlet). Refer to 

EM-24, "Removal and Installation"

.

3.

Disconnect radiator hose (lower) from water inlet. Refer to 

CO-14, "Removal and Installation"

.

4.

Remove water inlet and thermostat.
• Engine coolant leakage from cylinder block, so have a receptacle ready below.

INSTALLATION

Note the following, and install in the reverse order of removal.

Thermostat 

• Install thermostat with making rubber ring (1) groove fit to thermo-

stat flange (A) with the whole circumference. 

1.

Water inlet

2.

Rubber ring

3.

Thermostat

A.

To radiator

Refer to 

GI-4, "Components"

 for symbols in the figure.

JPBIA3387GB

PBIC3315J

CO-22

< REMOVAL AND INSTALLATION >

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THERMOSTAT

• Install thermostat (2) with jiggle valve (A) facing upwards. 

Water Inlet

After installation, install oil level gauge guide (1) as shown in the fig-
ure.

Inspection

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INSPECTION AFTER REMOVAL

Thermostat

• Place a thread (A) so that it is caught in the valves of thermostat

(1). Immerse fully in a container (B) 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 valve lift amount.
• After checking the maximum valve lift amount, lower the water

temperature and check the valve closing temperature. 

• If out of the standard, replace thermostat.

INSPECTION AFTER INSTALLATION

• Check for leakage of engine coolant using the radiator cap tester adapter (commercial service tool) and the

radiator cap tester (commercial service tool). Refer to 

CO-9, "Inspection"

.

• Start and warm up the engine. Check visually that there is no leakage of engine coolant.

1

: Cylinder block

PBIC3812E

2

: Water inlet

JPBIA3426GB

Standard: Refer to 

CO-26, "Thermostat"

.

PBIC3314J

WATER OUTLET

CO-23

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WATER OUTLET

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WITHOUT EGR CONTROL VALVE

JPBIA3465GB

1.

Gasket

2.

Engine coolant temperature sensor

3.

O-ring

4.

EGR control valve

5.

EGR temp sensor

6.

Water outlet

A.

To heater

B.

To radiator

: Engine front

Refer to 

GI-4, "Components"

 for symbols in the figure.