INFINITI QX56 2009 Factory Service Manual

REPAIR FOR COMPONENT PARTSTM-253
< DISASSEMBLY AND ASSEMBLY >
CEF
G H
I
J
K L
M A
B
TM
N
O P
2. Install snap ring in front sun gear using suitable tool.
3. Check operation of 3rd one-way clutch.
a. Hold oil pump assembly and turn front sun gear.
b. Check 3rd one-way clutch for correct locking and unlocking directions.
CAUTION:
If not as shown, check installati on direction of 3rd one-way
clutch.
Front Carrier, Input Clut ch, Rear Internal GearINFOID:0000000004187492
COMPONENTS
SCIA3110E
SCIA3131E
Revision: December 20092009 QX56

TM-254
< DISASSEMBLY AND ASSEMBLY >
REPAIR FOR COMPONENT PARTS
DISASSEMBLY
1. Seal ring 2. O-ring 3. Needle bearing
4. Bearing race 5. Front carrier assembly 6. Needle bearing
7. Snap ring 8. Snap ring 9. Retaining plate
10. Driven plate 11. Input clutch drum 12. Drive plate
13. Rear internal gear
SCIA5244E
Revision: December 20092009 QX56

REPAIR FOR COMPONENT PARTSTM-255
< DISASSEMBLY AND ASSEMBLY >
CEF
G H
I
J
K L
M A
B
TM
N
O P
1. Compress snap ring using suitable tool.
2. Remove front carrier assembly and input clutch assembly from rear internal gear.
3. Remove front carrier assembly from input clutch assembly.
a. Remove bearing race from front carrier assembly.
b. Remove needle bearing from front carrier assembly.
c. Remove snap ring from front carrier assembly. CAUTION:
Do not expand snap ring excessively.
4. Disassemble input clutch assembly.
a. Remove O-ring and seal rings from input clutch assembly.
SCIA5661E
SCIA5232E
SCIA5233E
SCIA5234E
SCIA5235E
Revision: December 20092009 QX56

TM-256
< DISASSEMBLY AND ASSEMBLY >
REPAIR FOR COMPONENT PARTS
b. Remove needle bearing from input clutch assembly.
c. Remove snap ring from input clutch drum using suitable tool.
d. Remove drive plates, driven plates and retaining plate from inputclutch drum.
INSPECTION
Front Carrier Snap Ring
 Check for deformation, fatigue or damage.CAUTION:
If necessary, replace the snap ring.
Input Clutch Snap Ring
 Check for deformation, fatigue or damage.CAUTION:
If necessary, replace the input clutch assembly.
Input Clutch Drum
 Check for deformation, fatigue or damage or burns.CAUTION:
If necessary, replace the input clutch assembly.
Input Clutch Drive Plates
 Check facing for burns, cracks or damage.CAUTION:
If necessary, replace the input clutch assembly.
Input Clutch Retaining Plate and Driven Plates
 Check facing for burns, cracks or damage.CAUTION:
If necessary, replace the input clutch assembly.
Front Carrier Assembly
 Check for deformation, fatigue or damage.
CAUTION:
If necessary, replace the front carrier assembly.
Rear Internal Gear
 Check for deformation, fatigue or damage.CAUTION:
If necessary, replace the rear internal gear.
ASSEMBLY
1. Install input clutch.
SCIA2853E
SCIA2864E
Revision: December 20092009 QX56

REPAIR FOR COMPONENT PARTSTM-257
< DISASSEMBLY AND ASSEMBLY >
CEF
G H
I
J
K L
M A
B
TM
N
O P
a. Install drive plates, driven plates and retaining plate in input clutch drum.
CAUTION:
Take care with order of plates.
b. Install snap ring in input clutch drum using suitable tool.
c. Install needle bearing in input clutch assembly. CAUTION:
Apply petroleum jelly to needle bearing.
d. Install new O-ring and new seal rings in input clutch assembly. CAUTION:
 Do not reuse O-ring and seal rings.
 Apply ATF to O-ring.
 Apply petroleum jelly to seal rings.
SCIA5237E
SCIA2864E
SCIA2853E
SCIA5235E
Revision: December 20092009 QX56

TM-258
< DISASSEMBLY AND ASSEMBLY >
REPAIR FOR COMPONENT PARTS
2. Install front carrier assembly.
a. Install snap ring to front carrier assembly.CAUTION:
Do not expand snap ring excessively.
b. Install needle bearing in front carrier assembly. CAUTION:
 Take care with the direction of needle bearing. Refer to
TM-229, "Location of Adjusting Shims, Needle Bearings,
Thrust Washers and Snap Rings".
 Apply petroleum jelly to needle bearing.
c. Install bearing race in front carrier assembly. CAUTION:
Apply petroleum jelly to bearing race.
d. Install front carrier assembly to input clutch assembly.
3. Compress snap ring using suitable tool.
4. Install front carrier assembly and input clutch assembly to rear internal gear.
Mid Sun Gear, Rear Sun Gear, High and Low Reverse Clutch HubINFOID:0000000004187493
COMPONENTS
SCIA5234E
SCIA5233E
SCIA5232E
SCIA5661E
Revision: December 20092009 QX56

REPAIR FOR COMPONENT PARTSTM-259
< DISASSEMBLY AND ASSEMBLY >
CEF
G H
I
J
K L
M A
B
TM
N
O P
DISASSEMBLY
1. Remove needle bearing and bearing races from high and low reverse clutch hub.
2. Remove snap ring from mid sun gear assembly using suitable tool.
CAUTION:
Do not expand snap ring excessively.
1. Needle bearing 2. Bearing race 3. Snap ring
4. High and low reverse clutch hub 5. Needle bearing 6. Snap ring
7. 1st one-way clutch 8. Rear sun gear 9. Seal ring
10. Mid sun gear
SCIA5343E
SCIA5238E
SCIA2855E
Revision: December 20092009 QX56

TM-260
< DISASSEMBLY AND ASSEMBLY >
REPAIR FOR COMPONENT PARTS
3. Remove high and low reverse clutch hub from mid sun gearassembly.
a. Remove needle bearing from high and low reverse clutch hub.
4. Remove rear sun gear assembly from mid sun gear assembly.
a. Remove snap ring from rear sun gear using suitable tool.
SCIA2856E
SCIA2857E
SCIA2858E
SCIA2859E
Revision: December 20092009 QX56

REPAIR FOR COMPONENT PARTSTM-261
< DISASSEMBLY AND ASSEMBLY >
CEF
G H
I
J
K L
M A
B
TM
N
O P
b. Remove 1st one-way clutch from rear sun gear.
5. Remove seal rings from mid sun gear.
INSPECTION
High and Low Reverse Clutch Hub Snap Ring, Rear Sun Gear Snap Ring
 Check for deformation, fatigue or damage.
CAUTION:
If necessary, replace the snap ring.
1st One-way Clutch
 Check frictional surface for wear or damage.CAUTION:
If necessary, replace the 1st one-way clutch.
Mid Sun Gear
 Check for deformation, fatigue or damage.CAUTION:
If necessary, replace the mid sun gear.
Rear Sun Gear
 Check for deformation, fatigue or damage.CAUTION:
If necessary, replace the rear sun gear.
High and Low Reverse Clutch Hub
 Check for deformation, fatigue or damage.CAUTION:
If necessary, replace the high and low reverse clutch hub.
ASSEMBLY
SCIA4633E
SCIA2861E
Revision: December 20092009 QX56

TM-262
< DISASSEMBLY AND ASSEMBLY >
REPAIR FOR COMPONENT PARTS
1. Install new seal rings to mid sun gear.CAUTION:
 Do not reuse seal rings.
 Apply petroleum je lly to seal rings.
2. Install 1st one-way clutch to rear sun gear. CAUTION:
Apply petroleum jelly to 1st one-way clutch.
3. Install snap ring to rear sun gear using suitable tool.
4. Install rear sun gear assembly to mid sun gear assembly.
5. Install needle bearing to high and low reverse clutch hub. CAUTION:
 Take care with the direction of needle bearing. Refer to
TM-229, "Location of Adjusting Shims, Needle Bearings,
Thrust Washers and Snap Rings".
 Apply petroleum jelly to needle bearing.
SCIA2861E
SCIA4633E
SCIA2859E
SCIA2858E
SCIA2857E
Revision: December 20092009 QX56