Nissan Frontier D40. Manual — part 190
WATER PUMP
CO-21
< ON-VEHICLE REPAIR >
[QR25DE]
C
D
E
F
G
H
I
J
K
L
M
A
CO
N
P
O
• Visually check if there is no significant dirt or rusting on water
pump body and vane.
• Make sure that there is no looseness in vane shaft, and that it turns
smoothly when rotated by hand.
• Replace water pump, if necessary.
INSTALLATION
Installation is in the reverse order of removal.
• When inserting heater pipe end into water pump and thermostat housing, apply a neutral detergent to O-
ring. Then insert it immediately.
INSPECTION AFTER INSTALLATION
• Check for leaks of engine coolant. Refer to
.
• Start and warm up the engine. Visually check if there is no leaks of engine coolant.
PBIC3011E
CO-22
< ON-VEHICLE REPAIR >
[QR25DE]
THERMOSTAT AND THERMOSTAT HOUSING
THERMOSTAT AND THERMOSTAT HOUSING
Exploded View
INFOID:0000000005276092
Removal and Installation Thermostat
INFOID:0000000005276093
REMOVAL
1.
Drain engine coolant from the radiator. Refer to
CO-12, "Changing Engine Coolant"
CAUTION:
• Perform this step when the engine is cold.
• Do not spill engine coolant on drive belt.
2.
Remove the air duct. Refer to
.
3.
Disconnect radiator hose (lower) at water inlet side. Refer to
.
4.
Remove water inlet and thermostat.
INSPECTION AFTER REMOVAL
1.
Gasket
2.
Water outlet
3.
Water pump pulley
4.
Water pump
5.
Thermostat
6.
O-ring
7.
Water inlet
8.
Water pump and thermostat housing 9.
Heater pipe
10. Water hose
11.
Water hose
12. Heater outlet
13. Engine coolant temperature sensor
14. Water control valve
A.
To heater
B.
To electric throttle control actuator
C.
To oil cooler
Front
AWBIA0868GB
THERMOSTAT AND THERMOSTAT HOUSING
CO-23
< ON-VEHICLE REPAIR >
[QR25DE]
C
D
E
F
G
H
I
J
K
L
M
A
CO
N
P
O
• Place a thread so that it is caught in the valve 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.
NOTE:
The full-open lift amount standard temperature for water control
valve is the reference value.
• After checking the full-open lift amount, lower the water tempera-
ture and check the valve closing temperature.
Standard:
• If out of the standard, replace thermostat.
INSTALLATION
Installation is in the reverse order of removal.
Thermostat
• Install thermostat by making rubber ring (1) groove fit to thermostat
flange (A) around the whole circumference.
• Install thermostat with jiggle valve (A) facing upwards. The position
deviation may be within the range of 20
°
(b).
INSPECTION AFTER INSTALLATION
• Check for leaks of engine coolant. Refer to
.
• Start and warm up the engine. Visually check if there is no leaks of engine coolant.
SLC252B
Items
Thermostat
Valve opening temperature
80.5 - 83.5
°
C (177 - 182
°
F)
Full-open lift amount
8 mm/ 95
°
C (0.315 in/ 203
°
F)
Valve closing temperature
77
°
C (171
°
F)
PBIC3317J
JPBIA2314ZZ
CO-24
< ON-VEHICLE REPAIR >
[QR25DE]
THERMOSTAT AND THERMOSTAT HOUSING
Exploded View
INFOID:0000000005276094
Removal and Installation Water Pump and Thermostat Housing
INFOID:0000000005276095
REMOVAL
1.
Drain engine coolant from the radiator. Refer to
CO-12, "Changing Engine Coolant"
2.
Remove water pump. Refer to
.
3.
Remove radiator hose (lower) at water inlet.
4.
Remove thermostat. Refer to
CO-22, "Removal and Installation Thermostat"
.
5.
Remove exhaust manifold cover. Refer to
.
6.
Remove oil level gauge and oil level gauge guide. Refer to
CAUTION:
Plug the oil level gauge guide opening to prevent foreign materials from entering oil pan.
7.
Remove A/C compressor, if equipped, and position aside. Refer to
HA-28, "Removal and Installation for
.
8.
Disconnect electric throttle control actuator, oil cooler and heater hose from heater pipe.
9.
Remove bolt for heater pipe at water pump and thermostat housing.
10. Disconnect heater pipe from water pump and thermostat housing.
11. Remove water pump and thermostat housing.
INSTALLATION
Installation is in the reverse order of removal.
1.
Gasket
2.
Water outlet
3.
Water pump pulley
4.
Water pump
5.
Thermostat
6.
O-ring
7.
Water inlet
8.
Water pump and thermostat housing 9.
Heater pipe
10. Water hose
11.
Water hose
12. Heater outlet
13. Engine coolant temperature sensor
14. Water control valve
A.
To heater
B.
To electric throttle control actuator
C.
To oil cooler
Front
AWBIA0868GB
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст