2002 NISSAN TERRANO Service Repair Manual

2. Remove extension tube and differential side shaft assembly.
3. Remove differential side flange.
4. Mark side retainers for identification. Remove side retainers.
Be careful not to confuse right and left side retainers and
shims.
5. Extract differential case from final drive housing.
6. Remove side outer races.
Tool number:
ST33290001
Be careful to keep the side bearing outer races together with
their respective inner cones Ð do not mix them up.
7. Remove side oil seal.
NPD005
SPD713
SPD639
SPD309
PD243
DISASSEMBLY (R180A)
Final Drive Housing (Cont'd)
PD-16

8. Loosen drive pinion nut.
Tool number:
ST38060002
9. Remove companion flange with puller.
10. Take out drive pinion together with pinion rear bearing inner
cone, drive pinion bearing spacer and pinion bearing adjusting
washer.
11. Remove front oil seal and pinion front bearing inner cone.
12. Remove pinion front and rear bearing outer races with brass
drift.
13. Remove pinion rear bearing inner cone and drive pinion adjust-
ing washer.
Assembly:
ST30905000
Tool number:
ST30031000
SPD752
SPD640
SPD641
PD349
PD179
DISASSEMBLY (R180A)
Final Drive Housing (Cont'd)
PD-17

Differential Case
1. Remove side bearing inner cones.
To prevent damage to bearing, engage puller jaws in grooves.
Assembly:
ST33065001
Tool number:
q
AST33051001
q
BST33061000
Be careful not to confuse the right and left hand parts.
2. Loosen ring gear bolts in a criss-cross fashion.
3. Tap ring gear off differential case with a soft hammer.
Tap evenly all around to keep ring gear from binding.
4. Separate L.H. and R.H. differential cases.
Put match marks on both L.H. and R.H. differential cases.
SPD642
SPD022
SPD024
SPD643
DISASSEMBLY (R180A)
PD-18

Extension Tube and Differential Side Shaft
1. Remove differential side shaft assembly from extension tube.
2. Cut rear axle bearing collar with cold chisel. Be careful not to
damage differential side shaft.
3. Install differential side shaft into extension tube and secure with
bolts. Remove extension tube retainer from differential side
shaft.
4. Remove grease seal.
SPD644
SPD645
SPD646
SPD647
DISASSEMBLY (R180A)
PD-19

Ring Gear and Drive Pinion
Check gear teeth for scoring, cracking or chipping.
If any damaged part is evident, replace ring gear and drive pinion
as a set (hypoid gear set).
Differential Case Assembly
Check mating surfaces of differential case, side gears, pinion mate
gears, pinion mate shaft and thrust washers.
Bearing
1. Thoroughly clean bearing.
2. Check bearings for wear, scratches, pitting or flaking.
Check tapered roller bearing for smooth rotation. If damaged,
replace outer race and inner cone as a set.
SPD648
SPD715
INSPECTION (R180A)
PD-20

To avoid confusion while calculating bearing shims, it is absolutely
necessary to stay with the metric system. If you measure anything
in inches, the results MUST be converted to the metric system.
Drive Pinion Height
1. First prepare Tools for pinion height adjustment.
q
1Height gauge (ST31211000)
q
2Dummy shaft (ST31212000)
q
3Collar
q
4Feeler gauge
q
5Dummy shaft spacer (ST31851000)
q
6Stopper (ST31852000)
q
7Preload gauge (ST3127S000)
IUse a collar which has the specifications shown at left.
2. To simplify the job, make a chart, like the one below, to orga-
nize your calculations.
LETTERSHUNDREDTHS OF
A MILLIMETER
H: Head number
D¢: Figure marked on dummy shaft
S: Figure marked on height gauge
N: Measuring clearance
3. Write the following numbers down in the chart.
H: Head number
SPD633
SPD753
SPD542
ADJUSTMENT (R180A)
PD-21

D¢: Figure marked on dummy shaft.
S: Figure marked on height gauge.
W: Thickness of drive pinion height adjusting washer which is 3.09
mm (0.1217 in).
4. Set Tool (dummy shaft) as shown at left and tighten drive pin-
ion nut carefully to correct preload of 1.0 to 1.3 N×m (10 to 13
kg-cm, 8.7 to 11.3 in-lb).
Tool number:
q
ADummy shaft (ST31212000)
q
BCollar
q
CDummy shaft spacer (ST31851000)
q
DStopper (ST31852000)
5. Attach Tool (height gauge) to gear carrier, and measure the
clearance between the height gauge and the dummy shaft face.
Tool number
q
AHeight gauge (ST31211000)
q
BDummy shaft (ST31212000)
SPD627
SPD628
SPD754
SPD373
PD091
ADJUSTMENT (R180A)
Drive Pinion Height (Cont'd)
PD-22

6. Substitute these values into the equation to calculate the thick-
ness of the washer.
If values signifying H, D¢and S are not given, regard them as
zero and calculate.
T (Thickness of washer)
=W+Nþ[(HþD¢þ S) x 0.01] þ 0.20
Example:
W = 3.09
N = 0.33
H=+2
D¢=þ1
S=0
T=W+Nþ[(HþD¢þ S) x 0.01] þ 0.20
(1) H ...............................................................................2
þD¢..........................................................................þ(þ1)
+3
(2) þS .............................................................................þ0
+3
(3) +3
x0.01
+0.03
(4) W ..........................................................................3.09
+N ........................................................................+0.33
3.42
(5) þ[+0.03]
3.39
(6) þ0.20
3.19
7. Select the proper washer. (Refer to PD-57.)
If you cannot find the desired thickness of washer, use washer
with thickness closest to the calculated value.
Example:
Calculated value ... T = 3.19 mm
Used washer ... T = 3.18 mm
ADJUSTMENT (R180A)
Drive Pinion Height (Cont'd)
PD-23