Nissan Pathfinder (2011 year). Instruction — part 228
DLN-362
< UNIT DISASSEMBLY AND ASSEMBLY >
[FRONT FINAL DRIVE: R180A]
FRONT FINAL DRIVE
2. Remove the carrier cover bolts and separate the carrier 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.
3. Remove side oil seal, using suitable tool.
CAUTION:
Do not damage gear carrier.
4. Remove snap ring (hole side) using suitable tool.
5. Remove differential side shaft assembly out of gear carrier using
suitable tool.
NOTE:
Tap on differential side shaft assembly from side gear side.
6. Remove snap ring (differential side shaft side).
7. Press differential side shaft out of differential side shaft bearing.
CAUTION:
Do not drop differential side shaft.
Tool number
: KV10111100 (J-37228)
PDIA0699E
PDIA0713E
PDIA0714E
PDIA0715E
PDIA0718E
2011 Pathfinder
FRONT FINAL DRIVE
DLN-363
< UNIT DISASSEMBLY AND ASSEMBLY >
[FRONT FINAL DRIVE: R180A]
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Differential Assembly
1. Remove differential side shaft assembly. Refer to
DLN-354, "Removal and Installation"
.
2. Remove side seal from gear carrier using suitable tool.
3. For proper reinstallation, paint matching marks on one side of
the side bearing cap and gear carrier.
CAUTION:
• For matching marks, use paint. Do not damage side bear-
ing cap or gear carrier.
• Side bearing caps are line-board during manufacture. The
matching marks are used to reinstall them in their original
positions.
4. Remove the side bearing caps.
5. Lift the differential case assembly out of the gear carrier.
CAUTION:
• Keep side bearing outer races together with side bearing
inner races. Do not mix them up.
• Keep side bearing adjusting washers together with side
bearings.
6. Remove housing spacer.
7. Remove side bearing inner race using Tools as shown.
CAUTION:
• Do not remove side bearing inner race unless it is being
replaced.
• Place copper plates between the vise and the side bearing
inner race and drive gear to prevent damage.
PDIA0700E
PDIA0701E
SPD919
Tool number
A: ST33051001 (J-22888-20)
B: ST33061000 (J-8107-2)
PDIA0827E
2011 Pathfinder
DLN-364
< UNIT DISASSEMBLY AND ASSEMBLY >
[FRONT FINAL DRIVE: R180A]
FRONT FINAL DRIVE
• Keep side bearing outer races together with side bearing
inner races. Do not mix them up.
8. For proper reinstallation, paint matching marks on the differential
case and drive gear.
CAUTION:
Use paint for matching marks. Do not damage differential
case or drive gear.
9. Remove the drive gear bolts.
10. Tap the drive gear off the differential case using suitable tool.
CAUTION:
Tap evenly all around to keep drive gear from bending.
11. Remove the lock pin of the pinion mate shaft from the drive gear
side using suitable tool.
12. Remove the pinion mate shaft.
13. Turn the pinion mate gear, then remove the pinion mate gear,
pinion mate thrust washer, side gear and side gear thrust
washer from the differential case.
SPD022
PDIA0496E
SPD025
SDIA0031J
SDIA0032J
2011 Pathfinder
FRONT FINAL DRIVE
DLN-365
< UNIT DISASSEMBLY AND ASSEMBLY >
[FRONT FINAL DRIVE: R180A]
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Drive Pinion Assembly
1. Remove the differential assembly.
2. Remove the drive pinion lock nut using suitable tool.
3. Put matching marks on the companion flange and drive pinion
using paint.
CAUTION:
Use paint to make the matching marks. Do not damage the
companion flange or drive pinion.
4. Remove the companion flange using suitable tool.
5. Press the drive pinion assembly (with rear inner bearing race
and collapsible spacer) out of the gear carrier.
CAUTION:
Do not drop drive pinion assembly.
6. Remove the drive pinion rear bearing inner race and drive pinion
height adjusting washer using Tool.
PDIA0702E
PDIA0703E
PDIA0704E
Tool number
: ST30031000 (J-22912-01)
S-PD179
2011 Pathfinder
DLN-366
< UNIT DISASSEMBLY AND ASSEMBLY >
[FRONT FINAL DRIVE: R180A]
FRONT FINAL DRIVE
7. Remove the front oil seal using suitable tool.
CAUTION:
Do not damage gear carrier.
8. Remove the drive pinion front bearing inner race.
9. Remove the drive pinion front and rear bearing outer races by
tapping them uniformly using suitable tool.
CAUTION:
Do not damage gear carrier.
INSPECTION AFTER DISASSEMBLY
Clean the disassembled parts. Then inspect the parts for wear or damage. If wear or damage are found, follow
the measures below.
Drive Pinion and Drive Gear
• If the drive pinion and drive gear teeth do not mesh or line-up correctly, determine the cause and adjust,
repair, or replace as necessary.
• If the drive pinion or drive gear are worn, cracked, damaged, pitted or chipped (by friction) noticeably,
replace with new drive pinion and drive gear.
• Drive pinion and drive gear are supplied in matched sets only. Matching numbers on both drive pinion and
drive gear are etched for verification. If a new drive pinion and drive gear set are being used, verify the num-
bers of each drive pinion and drive gear before proceeding with assembly.
Bearing
• If bearings are chipped (by friction), pitted, worn, rusted, scratched, or unusual noise is coming from bearing,
replace with new bearing assembly (as a new set).
• Bearing must be replaced with a new one whenever disassembled.
Side Gear and Pinion Mate Gear
• If any cracks or damage are found on the surface of the teeth, replace with new one.
• If any worn or chipped marks are found on the side of the side gear and pinion mate gear which contact the
thrust washer, replace with new one.
• Replace both side gear and pinion mate gear as a set when replacing side gear or pinion mate gear.
Side Gear Thrust Washer and Pinion Mate Thrust Washer
• If any chips (by friction), damage, or unusual wear are found, replace with new one.
Gear Carrier
• If any wear or cracks are found on the contact sides of gear carrier, replace with new one.
Companion Flange
• If any chips (about 0.1mm, 0.004 in) or other damage on the companion flange surface which contacts the
front oil seal lips are found, replace with new one.
ADJUSTING AND SELECTING WASHERS
Side Gear Back Clearance
• Assemble the differential parts if they are disassembled. Refer to
.
PDIA0716E
PDIA0705E
2011 Pathfinder
FRONT FINAL DRIVE
DLN-367
< UNIT DISASSEMBLY AND ASSEMBLY >
[FRONT FINAL DRIVE: R180A]
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1. Place the differential case straight up so that the side gear to be
measured is upward.
2. Using feeler gauges, measure the clearance between the side
gear back and differential case at three different points, while
rotating the side gear. Average the three readings to calculate
the clearance. (Measure the clearance of the other side as well.)
• If the side gear back clearance is outside of the specification,
use a thicker or thinner side gear thrust washer to adjust.
Refer to
DLN-377, "Inspection and Adjustment"
CAUTION:
• Insert feeler gauges with the same thickness on both
sides to prevent side gear from tilting.
• Each gear should rotate smoothly without excessive
resistance during differential motion.
• Select a side gear thrust washer for right and left individually.
NOTE:
Side gear back clearance is clearance between side gear and differential case for adjusting side gear
backlash.
Drive Pinion Height
1. Make sure all parts are clean and that the bearings are well lubricated.
2. Assemble the drive pinion bearings onto the Tool.
PDIA0460E
Side gear back clearance: Refer to
If the side gear back clearance is greater than
specification:
Use a thicker side gear thrust washer.
If the side gear back clearance is less than spec-
ification:
Use a thinner side gear thrust washer.
PDIA0576E
Tool number
:
—
(J-34309)
SPD769
2011 Pathfinder
DLN-368
< UNIT DISASSEMBLY AND ASSEMBLY >
[FRONT FINAL DRIVE: R180A]
FRONT FINAL DRIVE
•
Drive pinion front bearing;
make sure the J-34309-3 drive
pinion front bearing seat is secured tightly against the J-
34309-2 gauge anvil. Then turn the J-34309-7 drive pinion
front bearing pilot to secure the drive pinon front bearing in its
proper position.
•
Drive pinion rear bearing;
the J-34309-8 drive pinion rear
bearing pilot is used to center the drive pinion rear bearing
only. The J-34309-4 drive pinion rear bearing locking seat is
used to lock the drive pinion rear bearing to the assembly.
•
Installation of J-34309-9 and J-34309-16;
place a suitable
2.5 mm (0.098 in) thick plain washer between J-34309-9 and
J-34309-16. Both surfaces of J-34309-9 and J-34309-16 must
be parallel with a clearance of 2.5 mm (0.098 in).
3. Install the drive pinion rear bearing inner race into the gear car-
rier. Then insert the drive pinion height adjusting washer selec-
tor tool, J-34309-1, gauge screw assembly.
4. Assemble the drive pinion front bearing inner race and the J-
34309-2 gauge anvil. Assemble them together with the J-34309-
1 gauge screw in the gear carrier. Make sure that the drive pin-
ion height gauge plate, J-34309-16, will turn a full 360
°
. Tighten
the two sections together by hand.
5. Turn the assembly several times to seat the drive pinon bear-
ings.
SPD197A
SPD893
SPD199A
SPD770
2011 Pathfinder
FRONT FINAL DRIVE
DLN-369
< UNIT DISASSEMBLY AND ASSEMBLY >
[FRONT FINAL DRIVE: R180A]
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6. Measure the turning torque at the end of the J-34309-2 gauge
anvil using Tool.
7. Place the J-34309-10 “R180A” drive pinion height adapter onto
the gauge plate and tighten it by hand.
CAUTION:
Make sure all machined surfaces are clean.
8. Position the side bearing discs, Tool, and arbor firmly into the
side bearing bores. Install the side bearing caps and tighten the
side bearing cap bolts to the specified torque. Refer to
9. Select the correct standard drive pinion height adjusting washer
thickness. Select by using a standard gauge of 3 mm (0.12 in)
and your J-34309-101 feeler gauge. Measure the distance
between the J-34309-10 drive pinion height adapter, including
the standard gauge and the arbor.
10. Write down the exact measurement (the value of feeler gauge).
Tool number
: ST3127S000 (J-25765- A)
Turning torque specification:
1.0 - 1.6 N·m (0.11 - 0.16 kg-m, 9 - 14 in-lb)
PDIA0566E
SPD208A
Tool number
:
—
(J-25269-18)
SPD211A
SPD204A
SPD775
2011 Pathfinder
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