Infiniti G35 (V35) Sedan. Manual — part 1424
VTL-34
< ON-VEHICLE REPAIR >
HEATER & COOLING UNIT ASSEMBLY
HEATER & COOLING UNIT ASSEMBLY
Exploded View
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1.
Aspirator
2.
Aspirator hose
3.
Front heater duct
4.
Foot duct (left)
5.
Defroster seal
6.
Packing
7.
Ventilator seal
8.
Ventilator door (left)
9.
Ventilator door (right)
10. Foot duct (right)
11.
Defroster door lever
12.
Foot door lever
13. Ventilator door lever
14.
Ventilator door link
15.
Main link
16. Mode door motor bracket
17.
Mode door motor
18.
Air mix door motor (passenger side)
19. Intake sensor
20.
Intake sensor bracket
21.
O-ring
22. Low-pressure pipe 1
23.
High-pressure pipe 2
24.
Expansion valve
25. Cooler pipe grommet
26.
Insulator
27.
Evaporator cover adapter
28. Heater pipe bracket
29.
Case packing
30.
Heater & cooling unit case (left)
31. Heater pipe grommet
32.
Heater core
33.
Air mix door motor (driver side)
*
34. Foot door (left)
35.
Rear ventilator door
36.
Foot door (right)
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HEATER & COOLING UNIT ASSEMBLY
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Removal and Installation
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REMOVAL
1.
Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2.
Drain engine coolant from cooling system. Refer to
3.
Remove cowl top cover. Refer to
EXT-18, "Removal and Installation"
.
4.
Disconnect one-touch joint between low-pressure pipe 1 (1) and
low-pressure pipe 2 (2) with disconnector (SST: 9253089916)
(A).
CAUTION:
Cap or wrap the joint of low-pressure pipe 1 and low-pres-
sure pipe 2 with suitable material such as vinyl tape to
avoid the entry of air.
5.
Disconnect one-touch joint between high-pressure pipe 1 (3)
and high-pressure pipe 2 (4) with disconnector (SST:
9253089908).
CAUTION:
Cap or wrap the joint of high-pressure pipe 1 and high-pres-
sure pipe 2 with suitable material such as vinyl tape to avoid the entry of air.
6.
Remove clamp (A), and then disconnect heater hoses (1).
7.
Remove instrument panel & pad. Refer to
IP-12, "Removal and Installation"
8.
Remove blower unit. Refer to
VTL-30, "Removal and Installation"
9.
Remove clips of vehicle harness from steering member.
10. Remove mounting nuts (A), and then remove instrument stays (1).
37.
Max. cool door lever
38.
Foot door link
39. Defroster door link
40.
Max. cool door link
41.
Main link sub
42. Evaporator cover
43.
Heater & cooling unit case (right)
44.
Evaporator
45. Drain hose
46.
Clamp
47.
Air mix door (Slide door)
48. Air mix door adapter
49.
Heater pipe cover
50.
Max. cool door (left)
51. Defroster door (left)
52.
Center case
53.
Defroster door (right)
54. Max. cool door (right)
*
With left and right ventilation temperature separately system.
Refer to
for symbols in the figure.
Refer to
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< ON-VEHICLE REPAIR >
HEATER & COOLING UNIT ASSEMBLY
11. Remove clamp (A), and then remove drain hose (1).
12. Remove mounting bolts (A) from heater & cooling unit assembly
(1).
13. Remove front defroster nozzle, side defroster nozzles and ventilator duct. Refer to
DEFROSTER NOZZLE, SIDE DEFROSTER NOZZLES AND VENTILATOR DUCT : Removal and Instal-
lation"
.
14. Remove steering column mounting bolts (A) and nuts (B). Refer to
IP-12, "Removal and Installation"
15. Remove steering member mounting bolts (C).
16. Remove steering member (1), and then remove heater & cooling unit (2).
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Refer to
for symbols in the figure.
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HEATER & COOLING UNIT ASSEMBLY
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INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
• Replace O-rings of low-pressure pipe 1, 2 and high-pressure pipe 1, 2 with new ones, and then apply
compressor oil to it when installing it.
• Female-side piping connection is thin and easy to deform. Slowly insert the male-side piping
straight in axial direction.
• Insert piping securely until a clicks is heard.
• After piping connection is completed, pull male-side piping by hand to make sure that connection
does not come loose.
• When recharging refrigerant, check for leaks.
NOTE:
• Perform 4WAS front actuator adjustment (WITH 4WAS). Refer to
NEUTRAL POSITION ADJUSTMENT : Description"
• When filling radiator with engine coolant, refer to
.
• Recharge the refrigerant.
Heater & cooling unit (1)
assembly mounting bolt
(A)
: 6.9 N·m (0.7 kg·m, 61 in-
lb)
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