Nissan Pathfinder (2005 year). Instruction — part 389
REAR FINAL DRIVE ASSEMBLY
RFD-13
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RFD
2005 Pathfinder
REAR FINAL DRIVE ASSEMBLY
PFP:38300
Removal and Installation
EDS001MB
COMPONENTS
Rear Final Drive
WDIA0116E
1.
Rear final drive assembly
2.
Upper stopper
3.
Propeller shaft
4.
Washer
5.
Lower stopper
6.
Drive shaft
RFD-14
REAR FINAL DRIVE ASSEMBLY
2005 Pathfinder
Rear Final Drive Breather Hose
REMOVAL
1.
Remove the spare tire.
2.
Remove the rear stabilizer bar, using power tool. Refer to
.
3.
Remove the rear propeller shaft from the final drive. Refer to
.
LDIA0166E
1.
Rear final drive breather hose
2.
Plastic connectors
3.
Rear final drive assembly
4.
Metal connector
5.
Paint mark
REAR FINAL DRIVE ASSEMBLY
RFD-15
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RFD
2005 Pathfinder
4.
Remove the drive shafts from the final drive, using power tool.
Then suspend them using suitable wire. Refer to
.
5.
Disconnect the breather hose from the final drive.
6.
Remove the rear wheel sensors. Refer to
.
7.
Place a suitable jack under the rear final drive assembly.
CAUTION:
Do not place the jack on the rear cover (aluminum case).
8.
Remove the bolts and nuts and remove the rear final drive
assembly.
CAUTION:
Secure rear final drive assembly to the jack while removing
it.
INSTALLATION
Installation is in the reverse order of removal.
●
Install the breather hose using the specified routing. Refer to
.
CAUTION:
●
Make sure the painted marking on the metal end of breather hose is to the front of the vehicle
and there are no pinched or restricted areas on the breather hose caused by bending or winding
when installing it.
●
Make sure the breather hose plastic connectors are in the appropriate holes.
●
Check the rear final drive oil level after installation. Refer to
RFD-9, "Checking Differential Gear
.
LDIA0164E
WDIA0117E
RFD-16
REAR FINAL DRIVE ASSEMBLY
2005 Pathfinder
Disassembly and Assembly
EDS001MC
COMPONENTS
1.
Drive pinion lock nut
2.
Companion flange
3.
Front oil seal
4.
Pinion front bearing
5.
Gear carrier
6.
Side oil seal
7.
Side flange (with ABS sensor rotor)
8.
Collapsible spacer
9.
Pinion rear bearing
10. Pinion height adjusting washer
11.
Drive pinion
12. Side bearing adjusting washer
13. Side bearing
14. Side gear thrust washer
15. Circlip
16. Side gear
17. Lock pin
18. Pinion mate gear
19. Pinion mate thrust washer
20. Pinion mate shaft
21. Drive gear
22. Differential case
23. Bearing cap
24. Filler plug
25. Gasket
26. Rear cover
27. Drain plug
WDIA0121E
REAR FINAL DRIVE ASSEMBLY
RFD-17
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2005 Pathfinder
ASSEMBLY INSPECTION AND ADJUSTMENT
●
Before inspection and adjustment, drain the gear oil.
Total Preload Torque
1.
Secure the final drive assembly onto the Tool.
2.
Remove the side flanges using Tools.
3.
Rotate the drive pinion back and forth 2 to 3 times to check for unusual noise and rotation malfunction.
4.
Rotate the drive pinion at least 20 times to check for smooth
operation of the bearing.
5.
Measure total preload, using Tool.
NOTE:
Total preload torque = Pinion bearing torque + Side bearing
torque
●
If the measured value is out of the specification, disassemble it
to check and adjust each part. Adjust the pinion bearing preload and side bearing preload.
Adjust the pinion bearing preload first, then adjust the side bearing preload.
Drive Gear Runout
1.
Remove the rear cover. Refer to
RFD-20, "Differential Assembly"
.
2.
Fit a dial indicator to the drive gear back face.
3.
Rotate the drive gear to measure runout.
●
If the runout is outside of the limit, check the condition of the
drive gear assembly. Foreign material may be caught between
the drive gear and differential case, or the differential case or
drive gear may be deformed.
CAUTION:
Replace drive gear and drive pinion gear as a set.
Tool number
: KV38100800 (J-25604-01)
Tool numbers
: KV40104100 (
—
)
: ST36230000 (
—
)
Tool number
: ST3127S000 (J-25765-A)
Total preload torque (With oil seal):
2.84 - 3.75 N·m (0.29 - 0.38 kg-m, 26 - 33 in-lb)
SPD884
When the preload torque is greater than specification
On pinion bearings:
Replace the collapsible spacer.
On side bearings:
Use thinner side bearing adjusting washers by the same amount to
each side. Refer to
RFD-37, "Side Bearing Adjusting Washer"
.
When the preload torque is less than specification
On pinion bearings:
Tighten the drive pinion nut.
On side bearings:
Use thicker side bearing adjusting washers by the same amount to
each side. Refer to
RFD-37, "Side Bearing Adjusting Washer"
.
Runout limit
: 0.05 mm (0.0020 in) or less
SPD886
RFD-18
REAR FINAL DRIVE ASSEMBLY
2005 Pathfinder
Tooth Contact
1.
Remove the rear cover. Refer to
RFD-20, "Differential Assembly"
.
2.
Apply red lead to the drive gear.
NOTE:
Apply red lead to both faces of 3 to 4 gears, at 4 locations evenly
spaced on the drive gear.
3.
Rotate the drive gear back and forth several times. Check the
drive pinion gear to drive gear tooth contact.
CAUTION:
Check tooth contact on drive side and reverse side.
SPD357
SDIA0570E
SDIA0207E
REAR FINAL DRIVE ASSEMBLY
RFD-19
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2005 Pathfinder
4.
If the tooth contact is improperly adjusted, follow the procedure
below to adjust the pinion height (dimension X).
●
If the tooth contact is near the face (face contact), or near the
heel (heel contact), use thicker pinon height adjusting washers
to move the drive pinion closer to the drive gear.
Refer to
RFD-37, "Pinion Height Adjusting Washer"
.
●
If the tooth contact is near the flank (flank contact), or near the
toe (toe contact), use thinner pinion height adjusting washers to
move the drive pinion farther from the drive gear.
Refer to
RFD-37, "Pinion Height Adjusting Washer"
.
Backlash
1.
Remove the rear cover. Refer to
RFD-20, "Differential Assembly"
.
2.
Fit a dial indicator to the drive gear face to measure the back-
lash.
●
If the backlash is outside of the specification, change the thick-
ness of the side bearing adjusting washer.
CAUTION:
Do not change the total thickness of washers as it will change the bearing preload.
SDIA0517E
PDIA0440E
PDIA0441E
Backlash
: 0.10 - 0.15 mm (0.0039 - 0.0059 in)
When the backlash is greater than specification:
Make drive gear back side adjusting washer thicker,
and drive gear tooth side adjusting washer thinner by
the same amount. Refer to
.
When the backlash is less than specification:
Make drive gear back side adjusting washer thinner,
and drive gear tooth side adjusting washer thicker by
the same amount. Refer to
.
SPD513
RFD-20
REAR FINAL DRIVE ASSEMBLY
2005 Pathfinder
Companion Flange Runout
1.
Fit a test indicator to the outer side of the companion flange.
2.
Rotate the companion flange to check for runout.
3.
If the runout is outside of the limit, follow the procedure below to
adjust.
a.
Rotate the companion flange on the drive pinion by 90
°
, 180
°
and 270
°
, while checking for the position where the runout is
minimum.
b.
If the runout value is still outside of the limit after rotating the
companion flange, replace the companion flange.
c.
If the runout value is still outside of the limit after the companion flange has been replaced, possible cause
will be an assembly malfunction of the drive pinion and pinion bearing, or a malfunctioning pinion bearing.
DISASSEMBLY
Differential Assembly
1.
Drain the gear oil, if necessary.
2.
Remove the side flanges.
3.
Remove the rear cover bolts.
4.
Separate the rear cover from the gear carrier, using Tool.
CAUTION:
●
Do not damage the mating surface.
●
Do not insert flat-bladed screwdriver, this will damage the
mating surface.
5.
Mount the carrier on the Tool using two 45 mm (1.77 in) spacers.
6.
For proper reinstallation, paint matching marks on one side of
the bearing cap.
CAUTION:
●
Use paint for matching mark. Do not damage bearing
caps or gear carrier.
●
Bearing caps are line-bored during manufacture. The
matching marks are used to reinstall them in their origi-
nal positions.
Runout limit
: 0.08 mm (0.0031 in) or less
WDIA0231E
Tool number
: KV10111100 (J-37228)
WDIA0123E
Tool number
: KV38100800 (J-25604-01)
SPD888
SDIA1795E
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