Nissan Qashqai J11. Manual - part 168

CO-76

< REMOVAL AND INSTALLATION >

[K9K]

WATER PUMP

• Visually make sure there is no significant dirt or rusting on the

water pump body and vane.

• Make sure there is no looseness in the vane shaft, and that it turns

smoothly when rotated by hand.

• If there are any unusualness, replace the water pump assembly.

INSPECTION AFTER INSTALLATION

• Check for engine coolant leaks using reservoir tank cap tester. Refer to 

CO-19, "Inspection"

.

MBIB0546E

THERMO PLUNGER UNIT

CO-77

< REMOVAL AND INSTALLATION >

[K9K]

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THERMO PLUNGER UNIT

Exploded View

INFOID:0000000010438937

Refer to 

GI-4, "Components"

 for symbol marks in the figure.

Removal and Installation

INFOID:0000000010438938

REMOVAL

CAUTION:

Make sure that the engine is cool down before operating, in order to avoid hot coolant outflow, as the
electric pump is turned on even if the engine is off. On the other hand the pump is turned off when the
engine is on. In this case as the electric pump is working, the thermostat will have to stay open due to
high temperatures.
1.

Remove the battery negative cable.

2.

Lift the vehicle. 

3.

Remove front fender protector (LH). Refer to 

EXT-32, "Removal and Installation"

4.

Drain the engine coolant. 

CO-65, "Draining"

5.

Remove the ground cable bolt.

6.

Disconnect thermo plunger unit connector.

7.

Remove the thermo plunger connection caps.

8.

Remove the thermo plunger connection nuts using the appropriate tool.

9.

Remove the water hose from thermo plunger unit.

10. Remove the thermo plunger unit fixing bolts.  

11. Remove the thermo plunger unit.

1.

Water hose

2.

Clamp Thermo plunger control unit

3.

Thermo plunger control unit

4.

Earth lead

5.

Bracket stay

6.

Water hose 

7.

Water hose clip

E1BIA1144GB

CO-78

< REMOVAL AND INSTALLATION >

[K9K]

THERMO PLUNGER UNIT

INSTALLATION

NOTE:
• Thermo plunger caps must be correctly installed after removal.
• The hoses must be fully pushed onto pipe before tightening the clamp.
• Clamp must be fixed 5mm MIN from end of hose.

Installation is basically the reverse order of the removal.

 Thermo plunger bracket stay bolt: 10 N.m (1 kg-m, 7 ft-lb)

THERMOSTAT

CO-79

< REMOVAL AND INSTALLATION >

[K9K]

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THERMOSTAT

Inspection

INFOID:0000000010416388

• 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 example in the figure shows the thermostat.) 

• 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 tempera-

ture and check the valve closing temperature. 

• If the measured value is out of the standard value or unusual valve

seating condition is found, replace water inlet and thermostat
assembly.

SLC949A

Items

Temperature 

°

C (

°

F)

Start of opening

Refer to 

CO-81, "Thermostat"