2004 INFINITI QX56 clutch

REPAIR FOR COMPONENT PARTS
AT-307
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Revision: August 20072004 QX56
Direct ClutchUCS002J P
COMPONENTS
DISASSEMBLY
1. Using a flat-bladed screwdriver, remove snap rings from direct
clutch drum.
2. Remove drive plates, driven plates and retaining plate from
direct clutch drum.
INSPECTION

Check the following, and replace direct clutch assembly if necessary.
Direct Clutch Snap Rings

Check for deformation, fatigue or damage.
Direct Clutch Drive Plates

Check facing for burns, cracks or damage.
Direct Clutch Retaining Plate and Driven Plates

Check facing for burns, cracks or damage.
1. Direct clutch drum 2. Driven plate 3. Retaining plate
4. Snap ring 5. Drive plate
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AT-308
REPAIR FOR COMPONENT PARTS
Revision: August 20072004 QX56
ASSEMBLY
1. Install drive plates, driven plates and retaining plate in direct
clutch drum.
CAUTION:
Take care with the order of plates.
2. Using a flat-bladed screwdriver, install snap rings in direct clutch
drum.
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AT-318
ASSEMBLY
Revision: August 20072004 QX56
36. Install direct clutch assembly in reverse brake.
37. Install high and low reverse clutch assembly in direct clutch
assembly.
38. Using a flat-bladed screwdriver, range the drive plate.
39. Install high and low reverse clutch hub, mid sun gear assembly
and rear sun gear assembly as a unit.
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ASSEMBLY
AT-319
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Revision: August 20072004 QX56
CAUTION:
Check that portion A of high and low reverse clutch drum
protrudes approximately 2 mm (0.08 in) beyond portion B of
rear sun gear.
40. Install needle bearing in rear carrier assembly.
CAUTION:
Apply petroleum jelly to needle bearing.
41. Install bearing race in rear carrier assembly.
CAUTION:
Apply petroleum jelly to bearing race.
42. Install rear carrier assembly in direct clutch drum.
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AT-320
ASSEMBLY
Revision: August 20072004 QX56
43. Install needle bearing (rear side) in mid carrier assembly.
CAUTION:
Apply petroleum jelly to needle bearing.
44. Install needle bearing (front side) in mid carrier assembly.
CAUTION:
Apply petroleum jelly to needle bearing.
45. Install mid carrier assembly in rear carrier assembly.
46. Install front carrier assembly, input clutch assembly and rear
internal gear as a unit.
47. Install seal rings in input clutch assembly.
CAUTION:

Do not reuse seal rings.

Apply petroleum jelly to seal rings.
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ASSEMBLY
AT-321
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Revision: August 20072004 QX56
48. Install band servo anchor end pin and lock nut in transmission
case.
CAUTION:
Do not reuse band servo anchor end pin.
49. Install brake band in transmission case.
CAUTION:
Assemble it so that identification to avoid incorrect installa-
tion faces servo side.
50. Install front sun gear assembly to front carrier assembly.
CAUTION:
Apply ATF to front sun gear radial bearing and 3rd one-way
clutch end bearing.
51. Install needle bearing in front sun gear assembly.
CAUTION:
Apply petroleum jelly to needle bearing.
52. Adjust brake band tilting using clips so that brake band contacts
front sun gear drum evenly.
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ASSEMBLY
AT-325
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Revision: August 20072004 QX56
3. Install oil pump assembly in transmission case.
CAUTION:
Apply ATF to oil pump radial bearing.
4. Apply recommended sealant (Genuine RTV Silicone Sealant or
equivalent. Refer to GI-45, "
Recommended Chemical Products
and Sealants" .) to oil pump assembly as shown in illustration.
CAUTION:
Complete remove all moisture, oil and old sealant, etc.
From the oil pump mounting bolts and oil pump mounting
bolt mounting surfaces.
5. Tighten oil pump mounting bolts to specified torque. Refer to AT-
261, "Components" .
CAUTION:
Apply ATF to oil pump bushing.
6. Install O-ring to input clutch assembly.
CAUTION:

Do not reuse O-ring.

Apply ATF to O-ring.
7. Install converter housing to transmission case.
CAUTION:
Do not reuse self-sealing bolt.
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Converter housing mounting bolt:
: 52 N·m (5.3 kg-m, 38 ft-lb)
Self-sealing bolt:
: 61 N·m (6.2 kg-m, 45 ft-lb)
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ATC-1
AUTOMATIC AIR CONDITIONER
J AIR CONDITIONER
CONTENTS
C
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SECTION AT C
A
B
AT C
Revision: August 20072004 QX56 PRECAUTIONS .......................................................... 5
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 5
Precautions for Working with HFC-134a (R-134a) ..... 5
Contaminated Refrigerant ........................................ 5
General Refrigerant Precautions .............................. 6
Precautions for Leak Detection Dye ......................... 6
A/C Identification Label ............................................ 7
Precautions for Refrigerant Connection ................... 7
FEATURES OF NEW TYPE REFRIGERANT
CONNECTION ...................................................... 7
O-RING AND REFRIGERANT CONNECTION ..... 8
Precautions for Servicing Compressor ....................11
Precautions for Service Equipment .........................11
RECOVERY/RECYCLING EQUIPMENT .............11
ELECTRONIC LEAK DETECTOR .......................11
VACUUM PUMP ................................................. 12
MANIFOLD GAUGE SET .................................... 12
SERVICE HOSES ............................................... 12
SERVICE COUPLERS ........................................ 13
REFRIGERANT WEIGHT SCALE ...................... 13
CHARGING CYLINDER ...................................... 13
Wiring Diagrams and Trouble Diagnosis ................ 13
PREPARATION ......................................................... 14
Special Service Tools ............................................. 14
HFC-134a (R-134a) Service Tools and Equipment ... 14
Commercial Service Tools ...................................... 17
REFRIGERATION SYSTEM ..................................... 18
Refrigerant Cycle ................................................... 18
REFRIGERANT FLOW ....................................... 18
Refrigerant System Protection ............................... 18
REFRIGERANT PRESSURE SENSOR ............. 18
PRESSURE RELIEF VALVE .............................. 19
Component Layout ................................................. 20
FRONT REFRIGERATION SYSTEM .................. 20
REAR REFRIGERATION SYSTEM .................... 21LUBRICANT .............................................................. 22
Maintenance of Lubricant Quantity in Compressor ... 22
LUBRICANT ........................................................ 22
CHECKING AND ADJUSTING ............................ 22
AIR CONDITIONER CONTROL ............................... 24
Description .............................................................. 24
Operation ................................................................ 24
AIR MIX DOORS CONTROL .............................. 24
FAN SPEED CONTROL ...................................... 24
INTAKE DOOR CONTROL ................................. 24
MODE DOOR CONTROL ................................... 24
DEFROSTER DOOR CONTROL ........................ 24
MAGNET CLUTCH CONTROL ........................... 25
SELF-DIAGNOSTIC SYSTEM ............................ 25
Description of Control System ................................ 26
Control Operation ................................................... 26
DISPLAY SCREEN .............................................. 27
AUTO SWITCH ................................................... 27
TEMPERATURE DIAL (DRIVER) ........................ 27
TEMPERATURE DIAL (PASSENGER) ............... 27
RECIRCULATION SWITCH () ............................. 27
DEFROSTER () SWITCH .................................... 27
REAR WINDOW DEFOGGER SWITCH ............. 27
OFF SWITCH (HOLD FAN DOWN SWITCH
UNTIL SYSTEM SHUTS OFF) ............................ 27
A/C SWITCH ....................................................... 27
MODE SWITCH .................................................. 27
FRONT FAN SWITCH ......................................... 27
REAR FAN SWITCH (FRONT) ............................ 27
REAR TEMPERATURE/MODE DIAL (FRONT) ... 27
REAR TEMPERATURE/MODE DIAL (REAR) .... 28
REAR FAN CONTROL SWITCH (REAR) ........... 28
Discharge Air Flow ................................................. 29
FRONT ................................................................ 29
REAR .................................................................. 29
System Description (Front) ..................................... 30
CONTROLS AND THEIR FUNCTIONS .............. 30
System Description (Rear) ..................................... 31
CONTROLS AND THEIR FUNCTIONS .............. 31
CAN Communication System Description .............. 32