Nissan Pathfinder. Manual — part 684
HEATING AND COOLING UNIT ASSEMBLY
HA-47
< REMOVAL AND INSTALLATION >
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Rear
EXPANSION VALVE : Removal and Installation - Front Expansion Valve
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REMOVAL
1. Discharge the refrigerant. Refer to
2. Remove the cowl top extension. Refer to
EXT-25, "Removal and Installation"
3. Disconnect the high-pressure and low-pressure pipe from the expansion valve.
4. Remove the front expansion valve bolts, then remove the front expansion valve.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• Do not reuse O-rings.
• Apply A/C oil to the O-rings of the front expansion valve for installation.
• After charging refrigerant, check for leaks. Refer to
.
EXPANSION VALVE : Removal and Installation - Rear Expansion Valve
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REMOVAL
1. Discharge the refrigerant. Refer to
2. Remove the luggage side lower finisher (RH). Refer to
INT-31, "LUGGAGE SIDE LOWER FINISHER :
.
3. Disconnect the rear underfloor high-pressure and low-pressure pipes from the rear cooling unit assembly.
4. Remove the rear expansion valve bolts, then remove the rear expansion valve.
CAUTION:
1.
Front heating and cooling unit assembly
2.
Front evaporator
3.
Heater case side cover
4.
Air mix door motor (passenger side)
5.
Front blower unit case
6.
Intake door motor
7.
Front blower motor
8.
Upper floor connecting duct (RH)
9.
Air mix door motor (rear)
10. In-cabin microfilter cover
11. In-cabin microfilter
12. Drain hose
13. Expansion valve grommet
14. Front expansion valve
15. Front heater core
16. Air mix door motor (driver side)
17. Aspirator hose
18. Upper floor connecting duct (LH)
19. Front heater core pipe cover
20. Mode door motor (front)
ALIIA0578ZZ
1.
Rear ventilator duct upper seal
2.
Rear blower motor resistor 2
3.
Rear evaporator
4.
Rear expansion valve
5.
Rear expansion valve grommet
6.
Rear expansion valve bolts
7.
O-ring
8.
Rear evaporator seal
9.
Rear drain hose
10. Rear cooling unit lower housing
11. Rear blower motor 2
12. Rear cooling unit upper housing
HA-48
< REMOVAL AND INSTALLATION >
HEATING AND COOLING UNIT ASSEMBLY
Cap or wrap the joint of the pipe with suitable material such as vinyl tape to avoid the entry of air.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• Do not reuse O-rings.
• Apply A/C oil to the O-rings of the rear expansion valve for installation.
• After charging refrigerant, check for leaks. Refer to
PTC HEATER
HA-49
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PTC HEATER
Exploded View
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Removal and Installation
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REMOVAL
1. Remove the rear blower motor 1 unit assembly. Refer to
VTL-20, "REAR BLOWER MOTOR 1 UNIT
ASSEMBLY : Removal and Installation"
2. Disconnect the harness connectors from the PTC heater.
3. Remove the PTC heater screws, then remove the PTC heater.
INSTALLATION
Installation is in the reverse order of removal.
1.
Rear blower motor 1 unit assembly up-
per housing
2.
Rear shut-off door motor
3.
Rear blower motor 1 unit assembly lower
housing
4.
Rear blower motor 1
5.
Mode door motor (rear)
6.
PTC heater
ALIIA0531ZZ
HA-50
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Compressor
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Oil
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Refrigerant
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Model
DKS-17DT
Type
Variable displacement swash plate
Displacement
175 cm
3
(10.7 cu in)/rev
Number of cylinders
10
Cylinder bore diameter
× stroke
mm (in)
30.5 x 24 mm (1.2 x 0.9 in)
Direction of rotation
Clockwise (viewed from clutch)
Drive belt
Poly V 7 grooves
Disc to pulley clearance
mm (in)
Standard
0.3 – 0.6 mm (0.012 – 0.024 in)
Name
A/C System Oil Type S (DH-PS)
Capacity
m (US fl oz, lmp fl oz)
Total in system
230 (7.8, 8.1)
Compressor (service part) charging
amount
HA-26, "Oil Adjusting Procedure for
Type
HFC-134a (R-134a)
Capacity
0.83
± 0.03 kg (1.83 ± 0.07 lb)
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