1998 NISSAN PATROL oil

PROPELLER SHAFT &
DIFFERENTIAL CARRIER
SECTION
PD
CONTENTS
PREPARATION................................................................1
Special Service Tools ..................................................1
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING.....................................................4
NVH Troubleshooting Chart.........................................4
PROPELLER SHAFT......................................................5
Front Propeller Shaft ...................................................5
Rear Propeller Shaft ....................................................5
On-vehicle Service.......................................................6
Removal and Installation .............................................7
Inspection.....................................................................7
Disassembly.................................................................7
Assembly .....................................................................8
ON-VEHICLE SERVICE (Final Drive)..........................10
Front Oil Seal Replacement ......................................10
REMOVAL AND INSTALLATION.................................. 11
Removal ..................................................................... 11
Installation .................................................................. 11
FRONT FINAL DRIVE...................................................12
REAR FINAL DRIVE.....................................................13
DISASSEMBLY..............................................................14
Pre-inspection ............................................................14
Differential Carrier......................................................15
Differential Case ........................................................17
INSPECTION..................................................................19
Ring Gear and Drive Pinion ......................................19
Differential Case Assembly........................................19Bearing.......................................................................19
LIMITED SLIP DIFFERENTIAL.....................................20
Preparation for Disassembly .....................................20
Disassembly...............................................................21
Inspection...................................................................21
Adjustment .................................................................23
Assembly ...................................................................24
ADJUSTMENT...............................................................27
Drive Pinion Height ....................................................27
Tooth Contact.............................................................29
ASSEMBLY....................................................................31
Differential Case Ð 4-pinion type Ð.........................31
Differential Case Ð 2-pinion type Ð.........................32
Differential Carrier......................................................33
DIFFERENTIAL LOCK..................................................37
Actuator and Fork ......................................................37
Disassembly...............................................................38
Inspection...................................................................39
Assembly ...................................................................40
System Description ....................................................43
Component Parts Location ........................................44
Wiring Diagram Ð DIFF/L Ð/LHD Models ...............45
Wiring Diagram Ð DIFF/L Ð/RHD Models ...............47
Electrical Components Inspection .............................49
SERVICE DATA AND SPECIFICATIONS (SDS)..........51
Propeller Shaft ...........................................................51
Final Drive..................................................................52
PD

Tool number
Tool nameDescriptionUnit application
H233B
KV381025S0
Oil seal ®tting tool
V1ST30720000
Drift bar
V2KV38102510
Drift
NT525
Installing front oil seal
X
a: 77 mm (3.03 in) dia.
b: 55 mm (2.17 in) dia.
c: 71 mm (2.80 in) dia.
d: 65 mm (2.56 in) dia.
ST32580000
Differential side bearing
adjusting nut wrench
NT141
Adjusting side bearing pre-
load and backlash (ring gear-
drive pinion)
X
PREPARATION
Special Service Tools (Cont'd)
PD-3

NVH Troubleshooting Chart
Use the chart below to help you ®nd the cause of the symptom. If necessary, repair or replace these parts.
Reference pageÐ
Ð
PD-6
PD-6
PD-19
PD-29
PD-19
PD-14
Ð
Refer to MA section.
Refer to PROPELLER SHAFT in this chart.
Refer to DIFFERENTIAL in this chart.
NVH in FA, RA section
NVH in FA section
NVH in FA section
NVH in RA section
NVH in BR section
NVH in ST section
Possible cause and
SUSPECTED PARTS
Uneven rotation torque
Excessive joint angle
Rotation imbalance
Excessive runout
Rough gear tooth
Improper gear contact
Tooth surfaces worn
Incorrect backlash
Companion ¯ange excessive runout
Improper gear oil
PROPELLER SHAFT
DIFFERENTIAL
AXLE AND SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
STEERING
SymptomPRO-
PELLER
SHAFTNoiseXXXX XXXXXXX
Shake XXXXXXX
VibrationXXXX XX X X
DIFFER-
ENTIALNoiseXXXXXXX XXXXXX
X: Applicable
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
PD-4

Front Oil Seal Replacement
1. Remove propeller shaft.
2. Loosen drive pinion nut.
Tool number:
KV40104000
3. Remove companion ¯ange.
4. Remove front oil seal.
5. Apply multi-purpose grease to cavity at sealing lips of oil seal.
Press front oil seal into carrier.
6. Install companion ¯ange and drive pinion nut.
7. Install propeller shaft.
Tool number: KV381025S0
PD237
SPD737
SPD738
SPD739
ON-VEHICLE SERVICE (Final Drive)
PD-10

Removal
+Remove propeller shaft.
+Remove drive shaft. Refer to FA section (``FRONT AXLE Ð
Knuckle Flange'').
+Remove axle shaft.
Refer to RA section (``REAR AXLE'').
+Remove front and rear ®nal drive mounting bolts.
CAUTION:
+Be careful not to damage spline, sleeve yoke and front oil
seal when removing propeller shaft.
+Before removing the ®nal drive assembly or rear axle
assembly, disconnect the ABS sensor harness connector
from the assembly and move it away from the ®nal drive/
rear axle assembly area. Failure to do so may result in the
sensor wires being damaged and the sensor becoming
inoperative.
Installation
+Fill ®nal drive with recommended gear oil.
+Pay attention to the direction of gasket.
SPD103
SPD123
SPD767
REMOVAL AND INSTALLATION
PD-11

Pre-inspection
Before disassembling ®nal drive, perform the following inspection.
+Total preload
1) Turn drive pinion in both directions several times to set bearing
rollers.
2) Check total preload with Tool.
Tool number: ST3127S000
Total preload (with front oil seal):
Drive pinion bearing
New parts
1.7 - 2.5 Nzm (17 - 25 kg-cm, 15 - 22 in-lb)
Used parts
1.5 - 1.7 Nzm (15 - 17 kg-cm, 13 - 15 in-lb)
+Ring gear to drive pinion backlash
Check ring gear-to-drive pinion backlash with a dial indicator at
several points.
Ring gear-to-drive pinion backlash:
0.15 - 0.20 mm (0.0059 - 0.0079 in)
+Ring gear runout
Check runout of ring gear with a dial indicator.
Runout limit:
0.08 mm (0.0031 in)
+Tooth contact
Check tooth contact. Refer to ADJUSTMENT (PD-27).
+Side gear to pinion mate gear backlash
Measure clearance between side gear thrust washer and dif-
ferential case with a feeler gauge.
Clearance between side gear thrust washer and differ-
ential case:
0.15 - 0.20 mm (0.0059 - 0.0079 in)
SPD149
SPD246
SPD247
SPD004
DISASSEMBLY
PD-14

Be careful to keep the side bearing outer races together with
their respective inner cones Ð do not mix them up.
6. Loosen drive pinion nut with Tool.
Tool number: KV38104700
7. Remove companion ¯ange with puller.
8. Take out drive pinion together with pinion rear bearing inner
cone, drive pinion bearing spacer and pinion bearing adjusting
shim with soft hammer.
9. Remove front oil seal and pinion front bearing inner cone.
10. Remove pinion bearing outer races with a brass drift.
SPD011
SPD012
SPD686
SPD687
SPD563
DISASSEMBLY
Differential Carrier (Cont'd)
PD-16

Disassembly
1. Remove side bearing inner cone with Tool.
2. Loosen ring gear bolts in a criss-cross pattern.
3. Tap ring gear off gear case with a soft hammer.
Tap evenly all around to keep ring gear from binding.
4. Loosen screws on differential cases A and B using a press.
5. Separate differential cases A and B. Draw out component parts
(discs and plates, etc.).
Put marks on gears, discs and plates so that they can be rein-
stalled in their original positions from which they were
removed.
Inspection
CONTACT SURFACES
1. Clean the disassembled parts in suitable solvent and blow dry
with compressed air.
2. If following surfaces are found with burrs or scratches, smooth
with oil stone.
V1Differential case A
V2Differential case B
V3Pressure ring
V4Thrust washer
V5Pinion mate shaft
V6Thrust block
V7Pinion mate gear
V8Side gear
SPD476
SPD507
SPD503
LIMITED SLIP DIFFERENTIAL
PD-21