Page 113 of 142

HEATER & COOLING UNIT ASSEMBLY
ATC-113
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2006 November2007 350Z
12. Remove mounting bolts from heater & cooling unit assembly.
13. Remove steering column assembly mounting nuts and bolt.
14. Remove steering member mounting bolts, and then remove steering member.
15. Remove heater & cooling unit assembly.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
Replace O-rings of low-pressure pipe 2 and 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.
NOTE:
When filling radiator with coolant, refer to CO-10, "Changing Engine Coolant" .
Recharge the refrigerant.
SJIA1221E
SJIA1222E
Heater & cooling unit assembly mounting bolts
: 6.9 N·m (0.7 kg-m, 61 in-lb)
Steering member and steering column assembly mounting nuts and bolt
: 12 N·m (1.2 kg-m, 9 ft-lb)
Page 123 of 142
REFRIGERANT LINES
ATC-123
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2006 November2007 350Z
REFRIGERANT LINESPFP:92600
HFC-134a (R-134a) Service ProcedureNJS0001U
SETTING OF SERVICE TOOLS AND EQUIPMENT
Discharging Refrigerant
WARNING:
Avoid breathing A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose and
throat. Remove HFC-134a (R-134a) from A/C system using certified service equipment meeting
requirements of SAE J-2210 [HFC-134a (R-134a) recycling equipment] or J-2209 [HFC-134a (R-134a)
recovery equipment]. If accidental system discharge occurs, ventilate work area before resuming ser-
vice. Additional health and safety information may be obtained from refrigerant and lubricant manu-
facturers.
Evacuating System and Charging Refrigerant
WJIA0614E
WJIA0615E
Page 126 of 142

ATC-126
REFRIGERANT LINES
Revision: 2006 November2007 350Z
3. Remove engine cover (1), (2). Refer to EM-17, "INTAKE MANIFOLD COLLECTOR" .
4. Remove air cleaner case (LH) and air duct (LH). Refer to EM-15, "
AIR CLEANER AND AIR DUCT" .
5. Remove mounting nuts (A) from low-pressure flexible hose (1).
6. Remove mounting nuts (B) from high-pressure flexible hose (2).
CAUTION:
Cap or wrap the joint of compressor, low-pressure flexible
hose and high-pressure flexible hose with suitable material
such as vinyl tape to avoid the entry of air.
7. Disconnect compressor connector (C).
8. Remove drive belt. Refer to EM-12, "
DRIVE BELTS" .
9. Remove mounting bolts (A) from compressor, using power tools.
10. Remove compressor (1) upward of vehicle.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
Replace O-rings of low-pressure flexible hose and high-pressure flexible hose with new ones, and
then apply compressor oil to it when installing it.
When recharging refrigerant, check for leaks.
Check Disc to Pulley ClearanceNJS000IE
Check the clearance (B) between pulley assembly (1) and clutch
disc (2) around the entire periphery with feeler gauge (A).
If specified clearance is not obtained, replace compressor.
PJIA0178E
PJIA0179E
Disc to pulley
clearance: 0.30 - 0.60 mm (0.012 - 0.024 in)
SJIA1918E
Page 128 of 142

ATC-128
REFRIGERANT LINES
Revision: 2006 November2007 350Z
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
Replace O-rings of low-pressure flexible hose and low-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.
Removal and Installation of High-pressure Flexible HoseNJS0001Z
REMOVAL
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2. Remove tower bar. Refer to FSU-20, "
TOWER BAR" .
3. Remove engine cover (1), (2). Refer to EM-17, "
INTAKE MANIFOLD COLLECTOR" .
4. Remove air cleaner case (LH) and air duct (LH). Refer to EM-15, "
AIR CLEANER AND AIR DUCT" .
5. Remove mounting bolt (A) from high-pressure flexible hose
bracket (1).
6. Disconnect one-touch joint between high-pressure flexible hose
(1) and condenser with disconnector (SST: 9253089912) (A).
CAUTION:
Cap or wrap the joint of high-pressure flexible hose and
condenser with suitable material such as vinyl tape to avoid
the entry of air.
7. Remove mounting nut (A) from high-pressure flexible hose (1),
and then remove high-pressure flexible hose.
CAUTION:
Cap or wrap the joint of high-pressure flexible hose and
compressor with suitable material such as vinyl tape to
avoid the entry of air.Low-pressure flexible hose bracket mounting bolt
: 4.2 N·m (0.43 kg-m, 37 in-lb)
PJIA0183E
PJIA0184E
PJIA0185E
Page 129 of 142
REFRIGERANT LINES
ATC-129
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2006 November2007 350Z
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.
High-pressure flexible hose bracket mounting bolt
: 4.2 N·m (0.43 kg-m, 37 in-lb)
Page 131 of 142

REFRIGERANT LINES
ATC-131
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2006 November2007 350Z
When recharging refrigerant, check for leaks.
Removal and Installation of Low-pressure Pipe 1 and High-pressure Pipe 2NJS00021
REMOVAL
1. Set the temperature control dial at 18°C (60°F).
2. Open the driver and passenger window, and then disconnect the battery cable from the negative terminal.
CAUTION:
After the battery cables are disconnected, never open/close the driver and/or front passenger door
with the window in the full up position. The automatic window adjusting function will not work and
the side roof panel may be damaged.
3. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
4. Remove cowl top cover. Refer to EI-20, "
COWL TOP" .
5. Remove mounting bolt (A) from low-pressure flexible hose
bracket (1).
6. Remove high-pressure pipe 1 (2) from vehicle clip (B).
7. 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.
8. Disconnect one-touch joint between high-pressure pipe 1 (3)
and high-pressure pipe 2 (4) with disconnector (SST:
9253089908) (A).
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.
9. Remove instrument passenger panel lower. Refer to IP-10, "
INSTRUMENT PANEL ASSEMBLY" .
10. Remove blower unit. Refer to ATC-108, "
BLOWER UNIT" .
11. Remove air mix door motor and mode door motor. Refer to AT C - 11 7 , "
AIR MIX DOOR MOTOR" and
AT C - 11 6 , "
MODE DOOR MOTOR" .
12. Remove mounting screws, and then remove evaporator cover.High-pressure flexible hose bracket mounting bolt
: 4.2 N·m (0.43 kg-m, 37 in-lb)
PJIA0180E
PJIA0176E
RJIA1411E
Page 132 of 142

ATC-132
REFRIGERANT LINES
Revision: 2006 November2007 350Z
13. Remove mounting bolt (A), and then remove low-pressure pipe
1 (1) and high-pressure pipe 2 (2).
CAUTION:
Cap or wrap the joint of evaporator, low-pressure pipe 1, 2
and high-pressure pipe 1, 2 with suitable material 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 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 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 Liquid TankNJS00022
REMOVAL
1. Remove condenser. Refer to ATC-133, "Removal and Installation of Condenser" .
2. Clean liquid tank and its surrounding area, and remove dust and rust from liquid tank.
CAUTION:
Be sure to clean carefully.
3. Remove mounting bolts (A), (B) from liquid tank (1).
4. Lift liquid tank bracket upward. Remove liquid tank bracket from
protruding part of condenser.
5. Slide liquid tank upward, and then remove liquid tank.
SJIA1898E
Low-pressure flexible hose bracket mounting bolt
: 4.2 N·m (0.43 kg-m, 37 in-lb)
SJIA1919E
RJIA1440E
Page 133 of 142

REFRIGERANT LINES
ATC-133
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2006 November2007 350Z
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
Make sure liquid tank bracket is securely installed at protru-
sion of condenser.
Make sure liquid tank bracket does not move to a position
below center of liquid tank.
Replace O-rings of condenser pipe with new ones, and then
apply compressor oil to it when installing it.
When recharging refrigerant, check for leaks.
Removal and Installation of CondenserNJS00023
REMOVAL
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2. Drain engine coolant. Refer to CO-10, "
Changing Engine Coolant" .
3. Remove cover for condenser mounting bolt.
4. Remove tower bar. Refer to FSU-20, "
TOWER BAR" .
5. Remove engine cover (1), (2). Refer to EM-17, "
INTAKE MANIFOLD COLLECTOR" .
6. Remove air cleaner case (LH) and air duct (LH). Refer to and EM-15, "
AIR CLEANER AND AIR DUCT" .
7. Remove radiator fan shroud after removing radiator upper hose.
8. Remove mounting bolt for condenser.
9. Remove mounting bolt (A) from high-pressure flexible hose
bracket (1).
10. Disconnect one-touch joint between high-pressure flexible hose
(1) and condenser with disconnector (SST: 9253089912).
CAUTION:
Cap or wrap the high-pressure flexible hose and condenser
with suitable material such as vinyl tape to avoid the entry
of air.
Disconnect one-touch joint between high-pressure pipe 1 (2)
and condenser with disconnector (SST: 9253089908).
CAUTION:
Cap or wrap the joint of high-pressure pipe 1 and con-
denser with suitable material such as vinyl tape to avoid the
entry of air.
RJIA1441E
SJIA0249E
PJIA0183E
PJIA0189E