2002 NISSAN TERRANO Service Repair Manual

Side Bearing Preload
1. To simplify the job, make a chart like the one below to organize
your calculations.
LETTERSHUNDREDTHS OF
A MILLIMETER
A þ Left housing
B þ Right housing
C þ Differential case
D þ Differential case
E þ Left side bearing
F þ Right side bearing
G
1þ Left side retainer
G
2þ Right side retainer
2. Write the following numbers down in the chart.
A & B: Figures marked on final drive housing.
C & D: Figures marked on differential case.
G
1&G2: Figures marked on side retainer.
SPD650
SPD651
SPD652
ADJUSTMENT (R180A)
PD-24

3. Measure how far under the standard thickness [20 mm (0.79
in)] the side bearings are.
It will require tools shown below.
q
1Weight Block (ST32501000)
q
2Master Gauge (KV38101900)
q
3Base Plate
q
4Dial Indicator
4. Place the outer race of the opposite side bearing to the mea-
sured.
5. Place a weight block on the outer race, and a master gauge on
the block.
Tool number:
q
AST32501000
q
BKV38101900
6. Adjust dial indicator scale to zero.
7. Carefully slide master gauge and weight block out from under
dial indicator.
8. Lubricate side bearing and place the bearing outer race and
inner cone to be measured on the opposite side outer race.
If the bearing assembly is placed on the base plate, the bear-
ing width cannot be accurately determined due to its cage
being in contact with the base plate.
9. Place weight block (ST32501000) on side bearing.
10. Slide dial indicator on weight block.
11. Turn weight block a few times to ensure that bearing is prop-
erly seated.
12. Read dial indicator.
INormal indication:
0.10 - 0.30 mm (0.0039 - 0.0118 in)
IIf the needle fluctuates erratically then bearing is either dirty or
defective and should be cleaned or replaced.
SPD048
SPD150
SPD050
SPD591
SPD051
ADJUSTMENT (R180A)
Side Bearing Preload (Cont'd)
PD-25

13. Measure both bearing in the same way and write the left side
bearing measurement next to ªEº and the right side bearing
measurement next to ªFº.
14. Substitute these values into the equation to calculate the thick-
ness of the shim.
If values signifying A, B, C, D, G
1and G2are not given, regard
them as zero and calculate.
Left side:
T
1=(A+C+G1þD)x0.01+0.76þE
Right side:
T
2=(B+D+G2)x0.01+0.76þF
Example
A = 5 E = 0.11
B = 5 F = 0.15
C=3 G
1=4
D=3 G
2=1
Left side: Right side:
T
1=(A+C+G1þD)x0.01+0.76þE
=(5+3+4þ3)x0.01 + 0.76 þ 0.11T2=(B+D+G2)x0.01+0.76þF
=(5+3+1)x0.01 + 0.76 þ 0.15
(1) A ........................................................5 (1) B .......................................................5
+ C.....................................................+3 + D ....................................................+3
88
+G
1...................................................+4 + G2..................................................+1
12 9
þ D.....................................................þ3
9 (2) 9
(2) 9 x0.01
x0.01 0.09
0.09 (3) 0.09
+0.76
(3) 0.09 0.85
+0.76
0.85 (4) 0.85
þ0.15
(4) 0.85 0.70
þ E þ0.11
0.74\T
2= 0.70 mm
\T
1= 0.74 mm
15. Select the proper shims. (Refer to PD-57.)
If you cannot find the desired thickness of shims, use shims
with the total thickness closest to the calculated value.
ADJUSTMENT (R180A)
Side Bearing Preload (Cont'd)
PD-26

Tooth Contact
Gear tooth contact pattern check is necessary to verify correct
relationship between ring gear and drive pinion.
Hypoid gear sets which are not positioned properly in relation to
one another may be noisy, or have short life span or both. With a
pattern check, the most desirable contact for low noise level and
long life can be assured.
1. Thoroughly clean ring gear and drive pinion teeth.
2. Sparingly apply a mixture of powdered ferric oxide and oil or
equivalent to 3 or 4 teeth of ring gear drive side.
3. Hold companion flange steady by hand and rotate the ring gear
in both directions.
SPD357
SPD653
NPD003
ADJUSTMENT (R180A)
PD-27

Extension Tube and Differential Side Shaft
1. Measure rear axle bearing end play.
Rear axle bearing end play (A þ B):
0.1 mm (0.0039 in) or less
The end play can be adjusted with bearing adjusting shim.
(Refer to PD-57.)
2. Install oil seal.
3. Install the spacer, grease seal, extension tube retainer, adjust-
ing shim, shim and shim collar onto the differential side shaft.
4. Install differential side shaft assembly into extension tube.
SPD699
SPD654
SPD655
ASSEMBLY (R180A)
PD-28

Differential Case
1. Measure clearance between side gear thrust washer and dif-
ferential case.
Clearance between side gear thrust washer and differ-
ential case (A þ B):
0.10 - 0.20 mm (0.0039 - 0.0079 in)
The clearance can be adjusted with side gear thrust washer.
(Refer to PD-57.)
2. Apply gear oil to gear tooth surfaces and thrust surfaces and
check to see the turn properly.
3. Install L.H. and R.H. differential cases.
4. Place differential case on ring gear.
5. Apply locking agent [Locktite (stud lock) or equivalent] to ring
gear bolts, and install them.
Tighten bolts in a criss-cross fashion, lightly tapping bolt head
with a hammer.
6. Press-fit side bearing inner cones on differential case with Tool.
Tool number:
q
AST33230000
q
BST33061000
SPD656
SPD643
SPD746
PD353
ASSEMBLY (R180A)
PD-29

Final Drive Housing
1. Press-fit front and rear bearing outer races with Tools.
Tool number:
q
AST30611000
q
BST30621000
q
CST30701000
2. Select pinion bearing adjusting washer and drive pinion bear-
ing spacer, referring to Adjustment.
3. Install drive pinion height adjusting washer in drive pinion, and
press-fit rear bearing inner cone in it, using press and Tool.
Assembly:
ST30905000
Tool number:
ST30901000
4. Place pinion front bearing inner cone in final drive housing.
5. Apply multi-purpose grease to cavity at sealing lips of oil seal.
Install front oil seal.
Tool number:
ST30720000
SPD679
SPD377
SPD581
SPD657
ASSEMBLY (R180A)
PD-30

6. Place drive pinion bearing spacer, pinion bearing adjusting
washer and drive in final drive housing.
7. Insert companion flange into drive pinion by tapping the com-
panion flange with a soft hammer.
8. Tighten pinion nut to the specified torque.
The threaded portion of drive pinion and pinion nut should be
free from oil or grease.
Tool number:
ST38060002
9. Turn drive pinion in both directions several revolutions, and
measure pinion bearing preload.
Tool number:
ST3127S000
Pinion bearing preload:
1.1 - 1.7 N×m (11 - 17 kg-cm, 9.5 - 14.8 in-lb)
When pinion bearing preload is outside the specifications,
replace pinion bearing adjusting washer and spacer with a
different thickness.
10. Select side retainer adjusting washer.
Refer to Adjustment.
11. Press-fit side bearing outer race into side retainer.
Tool number:
q
AST30611000
q
BST30621000
SPD658
SPD659
EPD008
EPD007
SPD332
ASSEMBLY (R180A)
Final Drive Housing (Cont'd)
PD-31