Nissan Primera P12. Instruction — part 164
WATER PUMP
CO-17
[YD]
C
D
E
F
G
H
I
J
K
L
M
A
CO
WATER PUMP
PFP:21020
Removal and Installation
EBS00SJV
WARNING:
Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure
coolant escaping from the radiator.
REMOVAL
1.
Remove the undercover, splash cover (right).
2.
Remove the drive belts.
3.
Drain engine coolant. Refer to
CO-8, "DRAINING ENGINE COOLANT"
.
CAUTION:
Perform when the engine is cold.
4.
Support the bottom of the oil pan with a floor jack etc, and remove the right engine mount bracket (front
side of the engine).
5.
Remove the water pump pulley.
●
Loosen the pulley bolts after fixing the pulley using a screwdriver etc.
6.
Remove engine mount bracket.
7.
Remove the water pump.
●
Coolant will leak from the cylinder block, so have a receptacle ready below.
CAUTION:
●
Handle the water pump vane so that it does not contact any other parts.
●
Water pump cannot be disassembled and should be replaced as a unit.
INSPECTION AFTER REMOVAL
●
Visually check that there is no significant dirt or rusting on the
water pump body and vane.
●
Check that 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.
JLC294B
SBIA0132E
CO-18
[YD]
WATER PUMP
INSTALLATION
●
Install in the reverse order of removal.
●
Install the water pump pulley with the front mark (painted white, used to prevent errors during assembly)
facing the front of the engine. Refer to the figure above.
INSPECTION AFTER INSTALLATION
●
Check for engine coolant leaks using radiator cap tester. Refer to
.
THERMOSTAT AND WATER PIPING
CO-19
[YD]
C
D
E
F
G
H
I
J
K
L
M
A
CO
THERMOSTAT AND WATER PIPING
PFP:21200
Removal and Installation
EBS00SJW
WARNING:
Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure
coolant escaping from the radiator.
REMOVAL
1.
Remove the undercover and splash cover (right and left).
2.
Drain engine coolant. Refer to
CO-8, "DRAINING ENGINE COOLANT"
.
CAUTION:
Perform when the engine cold.
3.
Remove radiator lower hose from water inlet side.
4.
Remove water inlet and thermostat.
5.
Remove thermostat housing.
MBIA0059E
1.
Thermostat
2.
Water inlet
3.
Thermostat housing
4.
Water inlet pipe
5.
Heater return pipe
6.
Gasket
CO-20
[YD]
THERMOSTAT AND WATER PIPING
INSPECTION AFTER REMOVAL
Thermostat
●
Place a string 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 falls from the thread.
●
Continue heating. Check the full-open lift amount.
●
After checking the full-open lift amount, lower the water temper-
ature and check the valve closing temperature.
Standard values
INSTALLATION
●
Install in the reverse order of removal paying attention to the following.
Thermostat
●
Install the thermostat with the whole circumference of each
flange part fit securely inside the rubber ring.
●
Install the thermostat with the jiggle valve facing upwards.
SLC252B
Item
Thermostat
Valve opening temperature
80 - 84
°
C (176 - 183
°
F)
Full-open lift amount
More than 10 mm/ 95
°
C (0.39 in/ 203
°
F)
Valve closing temperature
Approximately 77
°
C (171
°
F)
JLC300B
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