INFINITI QX4 2005 Factory Service Manual

AT-280
REPAIR FOR COMPONENT PARTS
Revision: October 20052005 QX56
REPAIR FOR COMPONENT PARTSPFP:00000
Oil PumpECS00CL6
COMPONENTS
DISASSEMBLY
1. Remove oil pump housing from oil pump cover.
2. Remove oil pump housing oil seal using a flat-bladed screw-
driver.
CAUTION:
Be careful not to scratch oil pump housing.
1. O-ring 2. Oil pump cover 3. O-ring
4. Oil pump housing 5. Oil pump housing oil seal
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3. Remove O-ring from oil pump housing.
4. Remove O-ring from oil pump cover.
ASSEMBLY
1. Install new O-ring to oil pump cover.
CAUTION:

Do not reuse O-ring.

Apply ATF to O-ring.
2. Install new O-ring to oil pump housing.
CAUTION:

Do not reuse O-ring.

Apply ATF to O-ring.
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AT-282
REPAIR FOR COMPONENT PARTS
Revision: October 20052005 QX56
3. Install oil pump housing oil seal to the oil pump housing until it is
flush with the face of oil pump housing, using Tool.
CAUTION:

Do not reuse oil seal.

Apply ATF to oil seal.
4. Install oil pump housing in oil pump cover. Tighten oil pump
housing bolt to the specified torque. Refer to AT- 2 5 0 , "
Compo-
nents" .
Front Sun Gear, 3rd One-Way ClutchECS00CL7
COMPONENTS
DISASSEMBLY
1. Using a flat-bladed screwdriver, remove snap ring from front sun
gear.Tool number : ST33400001 (J-26082)
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1. Front sun gear 2. 3rd one-way clutch 3. Snap ring
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REPAIR FOR COMPONENT PARTS
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2. Remove 3rd one-way clutch from front sun gear.
INSPECTION
3rd One-way Clutch

Check frictional surface for wear or damage.
CAUTION:
If necessary, replace the 3rd one-way clutch.
Front Sun Gear Snap Ring

Check for deformation, fatigue or damage.
CAUTION:
If necessary, replace the snap ring.
Front Sun Gear

Check for deformation, fatigue or damage.
CAUTION:
If necessary, replace the front sun gear.
ASSEMBLY
1. Install 3rd one-way clutch in front sun gear.
CAUTION:
Apply ATF to 3rd one-way clutch.
2. Using a flat-bladed screwdriver, install snap ring in front sun
gear.
3. Check operation of 3rd one-way clutch.
a. Hold oil pump assembly and turn front sun gear.
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AT-284
REPAIR FOR COMPONENT PARTS
Revision: October 20052005 QX56
b. Check 3rd one-way clutch for correct locking and unlocking
directions.
CAUTION:
If not as shown in illustration, check installation direction of
3rd one-way clutch.
Front Carrier, Input Clutch, Rear Internal GearECS00CL8
COMPONENTS
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REPAIR FOR COMPONENT PARTS
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DISASSEMBLY
1. Compress snap ring using 2 flat-bladed screwdrivers.
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.
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
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AT-286
REPAIR FOR COMPONENT PARTS
Revision: October 20052005 QX56
4. Disassemble input clutch assembly.
a. Remove O-ring and seal rings from input clutch assembly.
b. Remove needle bearing from input clutch assembly.
c. Remove snap ring from input clutch drum, using flat-bladed
screwdriver.
d. Remove drive plates, driven plates and retaining plate from input
clutch 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.
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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.
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 flat-bladed screw-
driver.
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AT-288
REPAIR FOR COMPONENT PARTS
Revision: October 20052005 QX56
c. Install needle bearing in input clutch assembly.
CAUTION:
Apply petroleum jelly to needle bearing.
d. Install new O-ring and 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.
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
AT- 2 6 0 , "
Locations 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.
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REPAIR FOR COMPONENT PARTS
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3. Compress snap ring using 2 flat-bladed screwdrivers.
4. Install front carrier assembly and input clutch assembly to rear
internal gear.
Mid Sun Gear, Rear Sun Gear, High and Low Reverse Clutch HubECS0 0CL 9
COMPONENTS
DISASSEMBLY
1. Remove needle bearing and bearing races from high and low
reverse clutch hub.
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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
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