INFINITI M35 2007 Factory Service Manual

ATC-150
REFRIGERANT LINES
Revision: 2007 April2007 M35/M45
REFRIGERANT LINESPFP:92600
HFC-134a (R-134a) Service ProcedureNJS000HM
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

REFRIGERANT LINES
ATC-151
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2007 April2007 M35/M45
*1AT C - 2 6 , "LUBRICANT RETURN
OPERATION"
*2ATC-169, "Checking for Refrigerant
Leaks"
*3ATC-171, "CHECKING PROCE-
DURE"
*4ATC-100, "PERFORMANCE TEST
DIAGNOSIS"
*5AT C - 7 , "CONTAMINATED REFRIG-
ERANT"
SJIA1275E

ATC-152
REFRIGERANT LINES
Revision: 2007 April2007 M35/M45
ComponentsNJS000HN
Refer to AT C - 7 , "Precautions for Refrigerant Connection" .
VQ35DE
SJIA1700E

REFRIGERANT LINES
ATC-153
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2007 April2007 M35/M45
VK45DE
Removal and Installation of CompressorNJS000HO
REMOVAL
VQ35DE (For serial number: Up to JNKAY01E27M 308990, JNKAY01F07M 458010)
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2. Remove air cleaner case and air duct. Refer to EM-19, "
AIR CLEANER AND AIR DUCT" .
3. Remove engine undercover, using power tools.
SJIA1701E
SJIA1790E

ATC-154
REFRIGERANT LINES
Revision: 2007 April2007 M35/M45
4. Remove mounting nuts from low-pressure flexible hose and
high-pressure flexible hose.
CAUTION:
Cap or wrap the joint of low-pressure flexible hose and
high-pressure flexible hose with suitable material such as
vinyl tape to avoid the entry of air.
5. Disconnect compressor (magnet clutch and ECV) connectors.
6. Remove A/C compressor belt. Refer to EM-16, "
DRIVE BELTS" .
7. Remove mounting bolts, and then remove damper bracket.
8. Remove mounting bolts from compressor, using power tools.
9. Remove compressor downward of the vehicle.
VQ35DE (For serial number: From JNKAY01E27M 308991, JNKAY01F07M 458011)
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2. Remove air cleaner case and air duct. Refer to EM-19, "
AIR CLEANER AND AIR DUCT" .
3. Remove engine undercover, using power tools.
RJIA4155E
RJIA4157E
RJIA4158E
SJIA1983E

REFRIGERANT LINES
ATC-155
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2007 April2007 M35/M45
4. Remove mounting nuts from low-pressure flexible hose and
high-pressure flexible hose.
CAUTION:
Cap or wrap the joint of low-pressure flexible hose and
high-pressure flexible hose with suitable material such as
vinyl tape to avoid the entry of air.
5. Disconnect compressor (magnet clutch and ECV) connectors.
6. Remove A/C compressor belt. Refer to EM-16, "
DRIVE BELTS" .
7. Remove mounting bolts from compressor, using power tools.
8. Remove compressor downward of the vehicle.
VK45DE
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2. Remove air cleaner case and air duct. Refer to EM-177, "
AIR CLEANER AND AIR DUCT" .
3. Remove engine undercover, using power tools.
4. Remove mounting nut between low-pressure flexible hose and low-pressure pipe. Refer to ATC-157,
"Removal and Installation of Low-pressure Flexible Hose and Pipe" .
RJIA4155E
RJIA4158E
SJIA1791E

ATC-156
REFRIGERANT LINES
Revision: 2007 April2007 M35/M45
5. Remove mounting nuts from low-pressure pipe and high-pres-
sure flexible hose.
CAUTION:
Cap or wrap the joint of low-pressure pipe and high-pres-
sure flexible hose with suitable material such as vinyl tape
to avoid the entry of air.
6. Remove A/C compressor belt. Refer to EM-174, "
DRIVE BELTS" .
7. Disconnect compressor (magnet clutch and ECV) connectors.
8. Remove mounting bolts from compressor, using power tools.
9. Remove compressor downward of the vehicle.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:

Replace O-rings of low-pressure flexible hose, low-pressure pipe (VK45DE) 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 ClearanceNJS000I7
Check clearance around entire periphery of clutch disc.
If specified clearance is not obtained, replace compressor.
RJIA4154E
RJIA4156E
Disc to pulley
clearance: 0.3 - 0.6 mm (0.012 - 0.024 in)
RHA087E

REFRIGERANT LINES
ATC-157
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2007 April2007 M35/M45
Removal and Installation of Low-pressure Flexible Hose and PipeNJS000HP
REMOVAL
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2. Remove engine cover. Refer to EM-15, "
ENGINE ROOM COVER" (VQ35DE) or EM-173, "ENGINE
ROOM COVER" (VK45DE).
3. Remove air cleaner case and air duct. Refer to EM-19, "
AIR CLEANER AND AIR DUCT" (VQ35DE) or
EM-177, "
AIR CLEANER AND AIR DUCT" (VK45DE).
4. Remove cowl top cover. Refer to EI-18, "
COWL TOP" .
5. Remove mounting bolt from low-pressure flexible hose bracket.
6. Disconnect one-touch joint between low-pressure flexible hose
and low-pressure pipe 1.
a. Set a disconnector (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 and low-
pressure pipe 1 with suitable material such as vinyl tape to
avoid the entry of air.
7. Remove mounting nut from low-pressure flexible hose
(VQ35DE).
CAUTION:
Cap or wrap the joint of compressor and low-pressure flexi-
ble hose with suitable material such as vinyl tape to avoid
the entry of air.
8. Remove mounting nuts from low-pressure flexible hose and low-
pressure pipe (VK45DE).
CAUTION:
Cap or wrap the joint of compressor, low-pressure flexible
hose and low-pressure pipe with suitable material such as
vinyl tape to avoid the entry of air.
INSTALLATION
Installation is basically the reverse order of removal.
RJIA4159E
RJIA4160E
RJIA4162E
RJIA4161E

ATC-158
REFRIGERANT LINES
Revision: 2007 April2007 M35/M45
CAUTION:

Replace O-rings of low-pressure flexible hose and low-pressure pipe (VK45DE) 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 HoseNJS000HQ
REMOVAL
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2. Remove engine cover. Refer to EM-15, "
ENGINE ROOM COVER" (VQ35DE) or EM-173, "ENGINE
ROOM COVER" (VK45DE).
3. Remove air cleaner case and air duct. Refer to EM-19, "
AIR CLEANER AND AIR DUCT" (VQ35DE) or
EM-177, "
AIR CLEANER AND AIR DUCT" (VK45DE).
4. Remove mounting bolt from high-pressure flexible hose bracket.
5. Disconnect one-touch joint between high-pressure flexible hose
and condenser.
a. Set a disconnector (SST: 9253089912) on A/C piping.
b. Slide a disconnector backward until it clicks.
c. Slide A/C piping backward and disconnect it.
CAUTION:
Cap or wrap the joint of condenser and high-pressure flexi-
ble hose with suitable material such as vinyl tape to avoid
the entry of air.
6. Remove low-pressure pipe (VK45DE). Refer to ATC-157, "
Removal and Installation of Low-pressure Flex-
ible Hose and Pipe" .
7. Remove mounting nut from high-pressure flexible hose, and
then remove high-pressure flexible hose.
CAUTION:
Cap or wrap the joint of compressor and high-pressure flex-
ible hose 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)
RJIA4163E
RJIA4164E
RJIA4166E

REFRIGERANT LINES
ATC-159
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2007 April2007 M35/M45
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-
ble Hose and Pipe" .
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