Infiniti M35/M45 Y50. Manual — part 152
REFRIGERANT LINES
ATC-159
C
D
E
F
G
H
I
K
L
M
A
B
ATC
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
●
Replace O-rings of high-pressure flexible hose 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.
Removal and Installation of High-pressure Pipe 1 (Engine Compartment)
NJS000HR
REMOVAL
1.
Remove low-pressure flexible hose. Refer to
ATC-157, "Removal and Installation of Low-pressure Flexi-
2.
Remove mounting bolt from high-pressure flexible hose bracket.
3.
Remove high-pressure pipe 1 from vehicle clips.
4.
Disconnect one-touch joints of high-pressure pipe 1.
a.
Set a disconnector (SST: 9253089908) on A/C piping.
RJIA4165E
High-pressure flexible hose bracket mounting bolt
: 4.2 N·m (0.43 kg-m, 37 in-lb)
RJIA4163E
RJIA4167E
ATC-160
REFRIGERANT LINES
b.
Slide a disconnector toward (or upward) vehicle front until it clicks.
c.
Slide A/C piping toward (or upward) vehicle front and disconnect it.
CAUTION:
Cap or wrap the joint of condenser, evaporator and high-pressure pipe 1 with suitable material
such as vinyl tape to avoid the entry of air.
5.
Remove high-pressure pipe 1.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
●
Replace O-rings of high-pressure pipe 1 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.
RJIA4168E
High-pressure flexible hose bracket mounting bolt
: 4.2 N·m (0.43 kg-m, 37 in-lb)
REFRIGERANT LINES
ATC-161
C
D
E
F
G
H
I
K
L
M
A
B
ATC
Removal and Installation of Low-pressure Pipe 1 and High-pressure Pipe 2
NJS000HS
REMOVAL
1.
Set the temperature control switch (passenger side) at 18
°
C (60
°
F), and then disconnect the battery cable
from the negative terminal.
2.
Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
3.
Remove cowl top cover. Refer to
4.
Remove mounting bolt from low-pressure flexible hose bracket.
5.
Remove high-pressure pipe 1 from vehicle clip.
6.
Disconnect one-touch joints.
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 flexible hose, low-
pressure pipe 1 and high-pressure pipe 1, 2 with suitable
material such as vinyl tape to avoid the entry of air.
7.
Remove instrument passenger lower panel and glove box. Refer
to
IP-10, "INSTRUMENT PANEL ASSEMBLY"
.
8.
Remove foot grille (right). Refer to
ATC-148, "Removal of Foot Grilles"
9.
Remove air mix door motor (passenger side). Refer to
10. Remove mode door motor (passenger side). Refer to
11. Remove main link (right) and max. cool door link (right). Refer to
ATC-134, "HEATER & COOLING UNIT
.
12. Remove mounting screws, and then remove evaporator cover.
RJIA4169E
RJIA4117E
RJIA4170E
ATC-162
REFRIGERANT LINES
13. Remove mounting bolt, and then remove low-pressure pipe 1
and high-pressure pipe 2.
CAUTION:
Cap or wrap the joint of expansion valve with suitable mate-
rial such as vinyl tape to avoid the entry of air.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
●
Replace O-rings of low-pressure flexible hose, low-pressure pipe 1 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 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.
RJIA4171E
Low-pressure flexible hose bracket mounting bolt
: 4.2 N·m (0.43 kg-m, 37 in-lb)
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