2007 INFINITI M35 engine hose

TRANSMISSION ASSEMBLY
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Revision: 2007 April2007 M35/M45
INSPECTION
Installation and Inspection of Torque Converter

After inserting a torque converter to a A/T, be sure to check dis-
tance “A” to ensure it is within the reference value limit.
INSTALLATION
Install the removed parts in the reverse order of the removal, while paying attention to the following work.

When installing A/T assembly to the engine assembly, attach the fixing bolts in accordance with the follow-
ing standard.
VQ35DE models
VK45DE models
*: No.2 bolt also secures A/T fluid charging pipe.

Align the positions of tightening bolts for drive plate with those of
the torque converter, and temporarily tighten the bolts. Then,
tighten the bolts with the specified torque. Refer to AT- 2 7 4 ,
"COMPONENTS" .
CAUTION:

When turning crankshaft, turn it clockwise as viewed from
the front of the engine.

When tightening the tightening bolts for the torque con-
verter after fixing the crankshaft pulley bolts, be sure to
confirm the tightening torque of the crankshaft pulley
mounting bolts. Refer to EM-74, "
INSTALLATION" (for
VQ35DE engine), EM-208, "
INSTALLATION" (for VK45DE
engine).

After converter is installed to drive plate, rotate crankshaft several turns and check to be sure that
A/T rotates freely without binding.Distance “A”
VQ35DE models: 25.0 mm (0.98 in) or more
VK45DE models: 22.0 mm (0.87 in) or more
SCIA5694E
Bolt No. 1234
Number of bolts 1 5 2 2
Bolt length
“ ”mm (in)55 (2.17) 65 (2.56) 65 (2.56) 35 (1.38)
Tightening torque
N·m (kg-m, ft-lb)75
(7.7, 55)55
(5.6, 41)47
(4.8, 35)
SCIA3949E
Bolt No. 1 2* 3
Number of bolts 5 1 4
Bolt length
“ ”mm (in)70 (2.76) 70 (2.76) 65 (2.56)
Tightening torque
N·m (kg-m, ft-lb)11 3
(12, 83)74
(7.5, 55)
SCIA7068E
SCIA2288E

TRANSMISSION ASSEMBLY
AT-279
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Revision: 2007 April2007 M35/M45
5. Remove heat insulator.
6. Remove rear propeller shaft. Refer to PR-8, "
Removal and Installation" .
7. Remove front cross bar with power tool. Refer to FSU-27, "
Removal and Installation" .
8. Remove exhaust mounting bracket. Refer to EX-5, "
Removal and Installation" .
9. Remove three way catalyst. Refer to EX-5, "
Removal and Installation" .
10. Remove front propeller shaft. Refer to PR-5, "
Removal and Installation" .
11. Remove control rod. Refer to AT- 2 2 6 , "
Control Rod Removal and Installation" .
12. Remove crankshaft position sensor (POS) (1) from A/T assem-
bly.
CAUTION:

Do not subject it to impact by dropping or hitting it.

Do not disassemble.

Do not allow metal filings, etc., to get on the sensor's
front edge magnetic area.

Do not place in an area affected by magnetism.
13. Remove starter motor. Refer to SC-15, "
VQ35DE ENGINE
MODELS (AWD)" .
14. Remove rear plate cover. Refer to EM-38, "
Removal and Instal-
lation (AWD Models)" .
15. Turn crankshaft, and remove the four tightening bolts for drive
plate and torque converter.
CAUTION:
When turning the crankshaft, turn it clockwise as viewed
from the front of the engine.
16. Support A/T assembly with a transmission jack.
CAUTION:
When setting the transmission jack, be careful not to allow
it to collide against the drain plug.
17. Remove rear engine mounting member with power tool.
18. Remove engine mounting insulator (rear).
19. Disconnect A/T assembly harness connector.
20. Remove air breather hose. Refer to AT- 2 7 2 , "
Removal and Installation" .
21. Remove A/T fluid charging pipe from A/T assembly.
22. Remove O-ring from A/T fluid charging pipe.
23. Disconnect fluid cooler tube from the A/T assembly.
24. Plug up openings such as the A/T fluid charging pipe hole, etc.
25. Remove bolts fixing A/T assembly to engine assembly with power tool.
26. Remove A/T assembly with transfer assembly from vehicle.
CAUTION:

Secure torque converter to prevent it from dropping.

Secure A/T assembly to a transmission jack.
27. Remove transfer assembly from A/T assembly with power tool.
SCIA6506J
LCIA0335E
SCIA2203E

AT-280
TRANSMISSION ASSEMBLY
Revision: 2007 April2007 M35/M45
INSPECTION
Installation and Inspection of Torque Converter

After inserting a torque converter to a A/T, be sure to check dis-
tance “A” to ensure it is within the reference value limit.
INSTALLATION
Install the removed parts in the reverse order of the removal, while paying attention to the following work.

When installing A/T assembly to the engine assembly, attach the
fixing bolts in accordance with the following standard.

Align the positions of tightening bolts for drive plate with those of
the torque converter, and temporarily tighten the bolts. Then,
tighten the bolts with the specified torque. Refer to AT- 2 7 8 ,
"COMPONENTS" .
CAUTION:

When turning crankshaft, turn it clockwise as viewed from
the front of the engine.

When tightening the tightening bolts for the torque con-
verter after fixing the crankshaft pulley bolts, be sure to
confirm the tightening torque of the crankshaft pulley
mounting bolts. Refer to EM-74, "
INSTALLATION" .

After converter is installed to drive plate, rotate crankshaft
several turns and check to be sure that A/T rotates freely without binding.

Install crankshaft position sensor (POS). Refer to EM-38, "Removal and Installation (AWD Models)" .

After completing installation, check A/T fluid leakage, A/T fluid level and A/T position. Refer to AT- 1 3 ,
"Checking A/T Fluid" , AT- 2 2 8 , "Checking of A/T Position" . Distance “A”: 25.0 mm (0.98 in) or more
SCIA5694E
Bolt No. 1 2 3 4
Number of bolts 1 5 2 1
Bolt length
“ ”mm (in)55 (2.17) 65 (2.56) 35 (1.38) 40 (1.57)
Tightening torque
N·m (kg-m, ft-lb)75
(7.7, 55)47
(4.8, 35)34
(3.5, 25)
SCIA4600E
SCIA2288E

ATC-3
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Revision: 2007 April2007 M35/M45 INSPECTION FLOW .......................................... 110
Memory Function ................................................. . 111
INSPECTION FLOW ......................................... . 111
Ambient Sensor Circuit ......................................... 112
COMPONENT DESCRIPTION .......................... 112
AMBIENT TEMPERATURE INPUT PROCESS .. 112
DIAGNOSIS PROCEDURE FOR AMBIENT
SENSOR ............................................................ 112
COMPONENT INSPECTION ............................. 114
In-vehicle Sensor Circuit ....................................... 115
COMPONENT DESCRIPTION .......................... 115
DIAGNOSIS PROCEDURE FOR IN-VEHICLE
SENSOR ............................................................ 116
COMPONENT INSPECTION ............................. 117
Sunload Sensor Circuit ......................................... 118
COMPONENT DESCRIPTION .......................... 118
SUNLOAD INPUT PROCESS ........................... 118
DIAGNOSIS PROCEDURE FOR SUNLOAD
SENSOR ............................................................ 118
COMPONENT INSPECTION ............................ 120
Intake Sensor Circuit ............................................ 121
COMPONENT DESCRIPTION ......................... 121
DIAGNOSIS PROCEDURE FOR INTAKE SEN-
SOR .................................................................. 121
COMPONENT INSPECTION ............................ 122
CONTROLLER ....................................................... 123
Removal and Installation of Multifunction Switch . 123
REMOVAL ......................................................... 123
INSTALLATION ................................................. 123
AUTO AMP ............................................................. 124
Removal and Installation of Unified Meter and A/C
Auto Amp. ............................................................ 124
REMOVAL ......................................................... 124
INSTALLATION ................................................. 124
AMBIENT SENSOR ................................................ 125
Removal and Installation ...................................... 125
REMOVAL ......................................................... 125
INSTALLATION ................................................. 125
IN-VEHICLE SENSOR ............................................ 126
Removal and Installation ...................................... 126
REMOVAL ......................................................... 126
INSTALLATION ................................................. 126
SUNLOAD SENSOR .............................................. 127
Removal and Installation ...................................... 127
REMOVAL ......................................................... 127
INSTALLATION ................................................. 127
INTAKE SENSOR ................................................... 128
Removal and Installation ...................................... 128
REMOVAL ......................................................... 128
INSTALLATION ................................................. 128
BLOWER UNIT ....................................................... 129
Removal and Installation ...................................... 129
REMOVAL ......................................................... 129
INSTALLATION ................................................. 129
Disassembly and Assembly ................................. 130
BLOWER MOTOR .................................................. 131
Removal and Installation ...................................... 131
REMOVAL ......................................................... 131
INSTALLATION ................................................. 131INTAKE DOOR MOTOR .........................................132
Removal and Installation ......................................132
REMOVAL .........................................................132
INSTALLATION .................................................132
IN-CABIN MICROFILTER .......................................133
Removal and Installation ......................................133
FUNCTION ........................................................133
REPLACEMENT TIMING ..................................133
REPLACEMENT PROCEDURES .....................133
HEATER & COOLING UNIT ASSEMBLY ...............134
Removal and Installation ......................................134
REMOVAL .........................................................134
INSTALLATION .................................................135
Disassembly and Assembly ..................................137
MODE DOOR MOTOR ............................................139
Removal and Installation ......................................139
REMOVAL .........................................................139
INSTALLATION .................................................139
AIR MIX DOOR MOTOR .........................................140
Removal and Installation ......................................140
REMOVAL .........................................................140
INSTALLATION .................................................140
UPPER VENTILATOR DOOR MOTOR ..................141
Removal and Installation ......................................141
REMOVAL .........................................................141
INSTALLATION .................................................141
HEATER CORE .......................................................142
Removal and Installation ......................................142
REMOVAL .........................................................142
INSTALLATION .................................................142
DUCTS AND GRILLES ...........................................143
Removal and Installation ......................................143
COMPONENT LAYOUT ....................................143
REMOVAL .........................................................145
INSTALLATION .................................................149
REFRIGERANT LINES ...........................................150
HFC-134a (R-134a) Service Procedure ...............150
SETTING OF SERVICE TOOLS AND EQUIP-
MENT ................................................................150
Components .........................................................152
VQ35DE ............................................................152
VK45DE .............................................................153
Removal and Installation of Compressor ..............153
REMOVAL .........................................................153
INSTALLATION .................................................156
Check Disc to Pulley Clearance ...........................156
Removal and Installation of Low-pressure Flexible
Hose and Pipe ......................................................157
REMOVAL .........................................................157
INSTALLATION .................................................157
Removal and Installation of High-pressure Flexible
Hose .....................................................................158
REMOVAL .........................................................158
INSTALLATION .................................................159
Removal and Installation of High-pressure Pipe 1
(Engine Compartment) .........................................159
REMOVAL .........................................................159
INSTALLATION .................................................160
Removal and Installation of Low-pressure Pipe 1

PRECAUTIONS
ATC-13
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Revision: 2007 April2007 M35/M45

After compressor service operation, turn the compressor shaft by hand more than five turns in
both directions. This will equally distribute lubricant inside the compressor. After the compressor
is installed, let the engine idle and operate the compressor for one hour.

After replacing the compressor magnet clutch, apply voltage to the new one and check for normal
operation.
Precautions for Service EquipmentNJS000FU
RECOVERY/RECYCLING EQUIPMENT
Be certain to follow the manufacturer’s instructions for machine operation and machine maintenance. Never
introduce any refrigerant other than that specified into the machine.
ELECTRICAL LEAK DETECTOR
Be certain to follow the manufacturer’s instructions for tester operation and tester maintenance.
VACUUM PUMP
The lubricant contained inside the vacuum pump is not compatible
with the specified lubricant for HFC-134a (R-134a) A/C systems.
The vent side of the vacuum pump is exposed to atmospheric pres-
sure. So the vacuum pump lubricant may migrate out of the pump
into the service hose. This is possible when the pump is switched off
after evacuation (vacuuming) and hose is connected to it.
To prevent this migration, use a manual valve placed near the hose-
to-pump connection, as follows.

Usually vacuum pumps have a manual isolator valve as part of
the pump. Close this valve to isolate the service hose from the
pump.

For pumps without an isolator, use a hose equipped with a man-
ual shut-off valve near the pump end. Close the valve to isolate
the hose from the pump.

If the hose has an automatic shut-off valve, disconnect the hose
from the pump. As long as the hose is connected, the valve is
open and lubricating oil may migrate.
Some one-way valves open when vacuum is applied and close
under no vacuum condition. Such valves may restrict the pump’s
ability to pull a deep vacuum and are not recommended.
MANIFOLD GAUGE SET
Be certain that the gauge face indicates HFC-134a or R-134a. Be
sure the gauge set has 1/2″-16 ACME threaded connections for ser-
vice hoses. Confirm the set has been used only with refrigerant
HFC-134a (R-134a) and specified lubricants.
RHA270DA
SHA533D

ATC-134
HEATER & COOLING UNIT ASSEMBLY
Revision: 2007 April2007 M35/M45
HEATER & COOLING UNIT ASSEMBLYPFP:27110
Removal and InstallationNJS000HF
REMOVAL
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2. Drain coolant from cooling system. Refer to CO-11, "
Changing Engine Coolant" (VQ35DE) or CO-40,
"Changing Engine Coolant" (VK45DE).
3. Remove cowl top cover. Refer to EI-18, "
COWL TOP" .
4. Disconnect low-pressure flexible hose and high-pressure pipe 1
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 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.
5. Remove electric throttle control actuator. Refer to EM-21,
"INTAKE MANIFOLD COLLECTOR" (VQ35DE) or EM-179, "INTAKE MANIFOLD" (VK45DE).
6. Disconnect two heater hoses from heater core.
7. Remove instrument panel & pad. Refer to IP-10, "
INSTRUMENT PANEL ASSEMBLY" .
8. Remove blower unit. Refer to ATC-129, "
BLOWER UNIT" .
9. Remove clips of vehicle harness from steering member.
10. Remove mounting nuts and bolts, and then remove instrument stays.
RJIA4117E
RJIA4118E
RJIA4119E

ATC-136
HEATER & COOLING UNIT ASSEMBLY
Revision: 2007 April2007 M35/M45
CAUTION:

Replace O-rings of low-pressure flexible hose 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-11, "Changing Engine Coolant" (VQ35DE) or CO-40,
"Changing Engine Coolant" (VK45DE).

Recharge the refrigerant.
Heater & cooling unit assembly mounting bolt
: 6.9 N·m (0.7 kg-m, 61 in-lb)
Instrument stay mounting nut and bolt
: 12 N·m (1.25 kg-m, 9 ft-lb)

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