Nissan Terrano r20e. Instruction — part 400
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 clear ring gear and dive 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.
SPD005
SPD695
NPD003
ADJUSTMENT (H233B)
PD-52
Differential Carrier
1. Press-fit front and rear bearing outer races with Tools.
Tool number:
q
A
ST30611000
q
B
ST30621000
q
C
ST30613000
2. Select drive pinion height adjusting washer, referring to Adjust-
ment.
3. Install drive pinion adjusting washer in drive pinion, and press-
fit pinion rear bearing inner cone in it with press and Tool.
Tool number:
ST30901000
4. Place pinion front bearing inner cone in gear carrier.
5. Apply multi-purpose grease to cavity at sealing lips of oil seal.
Install front oil seal.
Tool number:
q
A
ST30720000
q
B
KV38102510
SPD580
SPD377
SPD581
YPD009
ASSEMBLY (H233B)
PD-53
6. Install drive pinion bearing spacer, pinion bearing adjusting
shim and drive pinion in gear carrier.
7. Insert companion flange into drive pinion by tapping the com-
panion flange with a soft hammer.
8. Tighten pinion nut to specified torque.
The threaded portion of drive pinion and pinion nut should be
free from oil or grease.
Tool number:
KV38104700
9. Turn drive pinion in both directions several times, and measure
pinion bearing preload.
Tool number:
ST3127S000
Pinion bearing preload:
1.7 - 2.5 N
⋅
m (17 - 26 kg-cm, 15 - 23 in-lb)
10. Install differential case assembly with side bearing outer races
into gear carrier.
SPD712
SPD697
SPD040
SPD149
PD383
ASSEMBLY (H233B)
Differential Carrier (Cont’d)
PD-54
11. Position side bearing on gear carrier with threads properly
engaged; screw in adjusters lightly at this stage of assembly.
Tool number:
ST32580000
12. Align mark on bearing cap with that on gear carrier and install
bearing cap on gear carrier.
I
Do not tighten at this point to allow further tightening of side
bearing adjusters.
13. Tighten both right and left side bearing adjusters alternately and
measure ring gear backlash and total preload at the same time.
Adjust right and left side bearing adjusters by tightening them
alternately so that proper ring gear backlash and total preload
can be obtained.
Ring gear-to-drive pinion backlash:
0.15 - 0.20 mm (0.0059 - 0.0079 in)
I
When checking preload, turn drive pinion in both direc-
tions several times to set bearing rollers.
Tool number:
ST3127S000
The total pinion bearing preload value with the differential case
assembly should be in accordance with the same value measured
without the differential case assembly. (See point 9.)
The relationship between both is:
Pinion bearing preload
With differential case assembly
Without differential case assembly
kg-cm
N
⋅
m
kg-cm
N
⋅
m
14
1.4
17 - 23
1.7 - 2.3
15
1.5
18 - 24
1.8 - 2.4
16
1.6
19 - 25
1.9 - 2.5
17
1.7
20 - 26
2.0 - 2.6
SPD684
SPD265
SPD246
SPD149
ASSEMBLY (H233B)
Differential Carrier (Cont’d)
PD-55
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