Infiniti QX56 (Z62). Manual — part 495
DLN-180
< UNIT DISASSEMBLY AND ASSEMBLY >
[FRONT FINAL DRIVE: R180A]
DRIVE PINION
7.
Using drift [SST: ST33200000 (J-26082)], press the pinion front
bearing inner race to drive pinion as far as drive pinion nut can
be tightened.
8.
Install front oil seal as shown in figure with the drifts (A and B).
CAUTION:
• Never reuse oil seal.
• When installing, never incline oil seal.
• Apply multi-purpose grease onto oil seal lips, and gear oil
onto the circumference of oil seal.
9.
Install companion flange (1).
NOTE:
When reusing drive pinion, align the matching mark (B) of drive
pinion with the matching mark (A) of companion flange, and then
install companion flange (1).
10. Temporarily tighten drive pinion lock nut to drive pinion.
CAUTION:
• Apply anti-corrosion oil to the thread and seat of the drive
pinion lock nut
• Never reuse drive pinion lock nut.
11. Tighten to drive pinion lock nut using flange wrench (A), while
adjusting pinion bearing preload torque using preload gauge (B).
CAUTION:
• Adjust to the lower limit of the drive pinion lock nut tight-
ening torque first.
• After adjustment, rotate drive pinion back and forth 2 to 3
times to check for unusual noise, rotation malfunction,
and other malfunctions.
12. Install differential case assembly. Refer to
CAUTION:
PDIA0709E
A: Drift [SST: ST30720000 (J-25405)]
B: Drift [SST: ST27863000 (
—
)]
PDIA0717E
PDIA0799J
A: Flange wrench (commercial service tool)
B: Preload gauge [SST: ST3127S000 (J-25765-A)]
Pinion bearing preload
: Refer to
WDIA0382E
DRIVE PINION
DLN-181
< UNIT DISASSEMBLY AND ASSEMBLY >
[FRONT FINAL DRIVE: R180A]
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Never install carrier cover yet.
13. Check and adjust drive gear runout, tooth contact, drive gear to drive pinion backlash. Refer to
14. Install side shaft. Refer to
15. Check and adjust companion flange runout. Refer to
.
16. Check total preload torque. Refer to
.
17. Install carrier cover. Refer to
.
Adjustment
INFOID:0000000006222399
PINION GEAR HEIGHT
1.
Make sure all parts are clean and that the bearings are well
lubricated.
2.
Assemble the pinion gear bearings into the differential shim
selector tool [SST:
—
(J-34309)].
• Pinion front bearing; make sure the J-34309-3 pinion front
bearing seat is secured tightly against the J-34309-2 gauge
anvil. Then turn the pinion front bearing pilot, J-34309-7, to
secure the bearing in its proper position.
• Pinion rear bearing; the pinion rear bearing pilot, J-34309-8,
is used to center the pinion rear bearing only. The pinion rear
bearing locking seat, J-34309-4, is used to lock the 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 pinion rear bearing inner race into gear carrier. Then
place the pinion preload shim selector tool, J-34309-1, gauge
screw assembly.
4.
Assemble the pinion front bearing inner race and the J-34309-2
gauge anvil. Assemble them together with the J-34309-1 gauge
screw in gear carrier. Make sure that the pinion height gauge
plate, J-34309-16, turns a full 360 degrees. Tighten the two sec-
tions together by hand.
SPD769
SPD197A
SPD893
SPD199A
DLN-182
< UNIT DISASSEMBLY AND ASSEMBLY >
[FRONT FINAL DRIVE: R180A]
DRIVE PINION
5.
Turn the assembly several times to seat the bearings.
6.
Measure the turning torque at the end of the J-34309-2 gauge
anvil using preload gauge [SST: ST3127S000 (J-25765-A)].
7.
Place the J-34309-10 “R180A” 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, J-25269-18, and arbor firmly into
the side bearing bores. Install the bearing caps and tighten bear-
ing cap mounting bolts to the specified torque. Refer to
9.
Select the correct standard pinion height adjusting washer thick-
ness. Select by using a standard gauge of 3 mm (0.12 in) and J-
34309-101 feeler gauge. Measure the distance between the J-
34309-11 pinion height adapter including the standard gauge
and the arbor.
SPD770
Turning torque specifica-
tion
: 1.08 – 1.66 N·m (0.11 –
0.16 kg-m, 10 – 14 in-lb)
PDIA0566E
SPD208A
SPD211A
SPD204A
DRIVE PINION
DLN-183
< UNIT DISASSEMBLY AND ASSEMBLY >
[FRONT FINAL DRIVE: R180A]
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10. Write down exact measurement (the value of feeler gauge).
11. Correct the pinion height washer size by referring to the “pinion
head number”.
There are two numbers painted on the drive pinion. The first
one refers to the drive pinion and drive gear as a matched
set. This number should be the same as the number on the
drive gear. The second number is the “pinion head height
number”. It refers to the ideal pinion height from standard
for quietest operation. Use the following chart to determine
the correct pinion height washer.
12. Select the correct pinion height adjusting washer. For selecting adjusting washer, refer to the latest parts
information.
13. Remove the J-34309 differential shim selector tool from the final
drive housing. Then disassemble to retrieve the pinion bearings.
COMPANION FLANGE RUNOUT
SPD775
Pinion head height number
Add or remove from the standard pinion height ad-
justing washer thickness measurement
−
6
−
5
−
4
−
3
−
2
−
1
0
+1
+2
+3
+4
+5
+6
Add 0.06 mm (0.0024 in)
Add 0.05 mm (0.0020 in)
Add 0.04 mm (0.0016 in)
Add 0.03 mm (0.0012 in)
Add 0.02 mm (0.0008 in)
Add 0.01 mm (0.0004 in)
Use the selected washer thickness
Subtract 0.01 mm (0.0004 in)
Subtract 0.02 mm (0.0008 in)
Subtract 0.03 mm (0.0012 in)
Subtract 0.04 mm (0.0016 in)
Subtract 0.05 mm (0.0020 in)
Subtract 0.06 mm (0.0024 in)
SPD542
SPD205A
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