Infiniti FX35 / FX45. Manual — part 128
ATC-108
< SERVICE INFORMATION >
HEATER & COOLING UNIT ASSEMBLY
HEATER & COOLING UNIT ASSEMBLY
Removal and Installation
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REMOVAL
1.
Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2.
Drain coolant from cooling system. Refer to
CO-10, "Changing Engine Coolant"
(VK45DE).
3.
Remove cowl top cover. Refer to
4.
Remove high-pressure pipe 2 mounting clip.
5.
Remove low-pressure flexible hose bracket mounting bolt. Refer to
ATC-128, "Removal and Installation of
6.
Disconnect low-pressure pipe 1 and high-pressure pipe 2 from
evaporator.
a.
Set a disconnector [high-pressure side (SST: 9253089908), low-
pressure side (SST: 9253089916)] on A/C piping.
b.
Slide a disconnector toward vehicle front until it clicks.
c.
Slide A/C piping toward vehicle front and disconnect it.
CAUTION:
Cap or wrap the joint of low-pressure pipe 1, 2 and high-
pressure pipe 2, 3 with suitable material such as vinyl tape
to avoid the entry of air.
7.
Remove electric throttle control actuator (VQ35DE). Refer to
.
8.
Disconnect two heater hoses from heater core.
9.
Remove instrument panel and pad. Refer to
.
10. Remove blower unit. Refer to
.
RJIA2037E
RJIA2077E
RJIA2041E
HEATER & COOLING UNIT ASSEMBLY
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11. Remove mounting nuts and bolts, and then remove instrument stays (left and right side).
12. Remove mounting bolts from heater & cooling unit assembly.
13. Disconnect drain hose.
14. Remove center and side ventilator ducts, defroster nozzle and side defroster ducts. Refer to
15. Remove steering column mounting bolts and nut.
16. Remove steering member mounting bolts, nut and harness clips.
17. Remove steering member, and then remove heater & cooling unit assembly.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
• Replace O-rings of low-pressure pipe 1 and high-pressure pipe 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 click 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.
RJIA2042E
SJIA1223E
SJIA1656E
ATC-110
< SERVICE INFORMATION >
HEATER & COOLING UNIT ASSEMBLY
NOTE:
• When filling radiator with coolant, refer to
CO-10, "Changing Engine Coolant"
(VQ35DE) or
(VK45DE).
• Recharge the refrigerant.
Heater & cooling unit assembly mounting bolt
: 6.8 N·m (0.69 kg-m, 60 in-lb)
Steering member mounting nut and bolt
: 12 N·m (1.2 kg-m, 9 fl-lb)
Steering column mounting nut and bolt
: 16.7 N·m (1.7 kg-m, 12 fl-lb)
HEATER & COOLING UNIT ASSEMBLY
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Disassembly and Assembly
INFOID:0000000001328212
1.
Heater pipe grommet
2.
Heater core
3.
Heater pipe cover
4.
Aspirator
5.
Aspirator hose
6.
Air mix door motor (driver side)
7.
Air mix door (slide door)
8.
Max. cool door link
9.
Max. cool door lever
10. Ventilator door lever
11.
Ventilator door link
12. Air mix door motor (passenger side)
13. Intake sensor bracket
14. Intake sensor
15. Foot duct (right)
16. Evaporator cover
17. Evaporator cover adaptor
18. Heater pipe bracket
19. Insulator
20. Heater case (right)
21. Low-pressure pipe 2
22. O-ring
23. High-pressure pipe 3
24. Expansion valve
PJIA0157E
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