Infiniti Q45. Manual — part 774
REAR FINAL DRIVE ASSEMBLY
RFD-33
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RFD
10. Apply anti-corrosion oil to the thread and seat of drive pinion
lock nut, and temporarily tighten drive pinion lock nut to drive
pinion.
CAUTION:
Do not reuse drive pinion lock nut.
11. Adjust to the drive pinion lock nut tightening torque and pinion
bearing preload torque.
CAUTION:
●
Adjust to the lower limit of the drive pinion lock nut tight-
ening torque first.
●
If the preload torque exceeds the specified value, replace
collapsible spacer and tighten it again to adjust. Do not
loosen drive pinion lock nut to adjust the preload torque.
●
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
RFD-33, "Differential Assembly"
.
CAUTION:
Do not install rear cover yet.
13. Check and adjust drive gear runout, tooth contact, drive gear to drive pinion backlash, and companion
flange runout. Refer to
,
,
,
RFD-22, "Companion Flange Runout"
Recheck above items. Readjust the above description, if necessary.
14. Check total preload torque. Refer to
RFD-19, "Total Preload Torque"
15. Install rear cover. Refer to
RFD-33, "Differential Assembly"
.
Differential Assembly
1.
Install side gear thrust washers with the same thickness as the
ones installed prior to disassembly or reinstall the old ones on
the side gears.
Tool number
A: ST3127S000 (J-25765-A)
Drive pinion lock nut tightening torque:
147 - 323 N·m (15 - 32 kg-m, 109 - 238 ft-lb)
Drive pinion bearing preload:
2.65 - 3.23 N·m (0.27 - 0.32 kg-m, 24 - 28 in-lb)
PDIA0765J
SDIA0193J
RFD-34
REAR FINAL DRIVE ASSEMBLY
2.
Install side gears and thrust washers into differential case.
CAUTION:
Make sure that the circular clip is installed to side gears.
3.
Align 2 pinion mate gears in diagonally opposite positions, then
rotate and install them into differential case after installing thrust
washer to pinion mate gear.
4.
Align the lock pin holes on differential case with shaft, and install
pinion mate shaft.
5.
Measure side gear end play. If necessary, select the appropriate
side gear thrust washers. Refer to
6.
Drive a lock pin into pinion mate shaft, using a punch.
Make sure lock pin is flush with differential case.
CAUTION:
Do not reuse lock pin.
7.
Align the matching mark of differential case with the mark of
drive gear, then place drive gear.
8.
Apply thread locking sealant into the thread hole of drive gear.
●
Use Genuine High Strength Thread Locking Sealant or
equivalent. Refer to
.
CAUTION:
Drive gear back and threaded holes shall be cleaned and
degreased sufficiently.
SDIA2025E
SDIA0195J
SPD030
SDIA2593E
SDIA2594E
REAR FINAL DRIVE ASSEMBLY
RFD-35
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RFD
9.
Install drive gear on the mounting bolts, and then tighten to the
specified torque. Refer to
.
CAUTION:
●
Tighten bolts in a crisscross fashion.
●
After tightening the bolts to the specified torque, tighten
the bolts additionally by turning the bolts 31 to 36
degrees.
10. Press side bearing inner races to differential case, using the drift
and the base.
CAUTION:
Do not reuse side bearing inner race.
11. Install differential case assembly with side bearing outer races
into gear carrier.
12. Measure side bearing preload. If necessary, select the appropri-
ate side bearing adjusting washers. Refer to
13. Insert selected left and right side bearing adjusting washers in
place between side bearings and gear carrier.
14. Align matching marks on bearing cap with that on gear carrier.
15. Install bearing caps and tighten bearing cap mounting bolts to
the specified torque. Refer to
SDIA0247J
Tool number
A: KV38100300 (J-25523)
B: ST33061000 (J-8107-2)
SPD353
SPD527
SPD558
SDIA1795E
RFD-36
REAR FINAL DRIVE ASSEMBLY
16. Using the drift, drive side oil seals until it becomes flush with the
case end.
CAUTION:
●
Do not reuse oil seal.
●
When installing, do not incline oil seal.
●
Apply multi-purpose grease onto oil seal lips, and gear
oil onto the circumference of oil seal.
17. Check and adjust drive gear runout, tooth contact, drive gear to
drive pinion backlash, and total preload torque. Refer to
,
,
RFD-19, "Total Preload Torque"
Recheck above items. Readjust the above description, if necessary.
18. Apply sealant to mating surface of rear cover.
●
Use Genuine Silicone RTV or equivalent. Refer to
"RECOMMENDED CHEMICAL PRODUCTS AND SEAL-
ANTS"
.
CAUTION:
Remove old sealant adhering to mounting surfaces. Also
remove any moisture, oil, or foreign material adhering to
application and mounting surfaces.
19. Install rear cover on gear carrier and tighten mounting bolts with
the specified torque. Refer to
20. Install side flange with the following procedure.
a.
Attach the protector to side oil seal.
b.
After the side flange is inserted and the serrated part of side
gear has engaged the serrated part of flange, remove the pro-
tector.
c.
Put a suitable drift on the center of side flange, then drive it until
sound changes.
NOTE:
When installation is completed, driving sound of the side flange
turns into a sound which seems to affect the whole final drive.
d.
Confirm that the dimension of the side flange installation (Mea-
surement A) in the figure comes into the following.
Tool number
: KV38100200 (J-26233)
SPD560
PDIA0961E
Tool number
: KV38107900 (J-39352)
SDIA0822E
Measurement A: 326 - 328 mm (12.83 - 12.91 in)
SDIA1039E
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