ITB21-023B

Classification:
Reference:
Date:
FA21-010B
ITB21-023B
December 13, 2023
TRANSFER ASSEMBLY SEAL REPLACEMENT
FOR AWD FRONT DRIVE SHAFT REMOVAL
This bulletin has been amended. See AMENDMENT HISTORY on the last page.
Please discard previous versions of this bulletin.
APPLIED VEHICLES:
2019-2024 QX50 (J55)
2022-2024 QX55 (FJ55)
2014-2020 QX60 (L50)
2014 QX60 Hybrid (L50H)
APPLIED DRIVELINES:
AWD only
SERVICE INFORMATION
When removing the front passenger (RH) side drive shaft on an APPLIED VEHICLE for any reason, transfer
assembly drive shaft oil seal and dust cover seal replacement is required.

Refer to the SERVICE PROCEDURE in this bulletin for transfer assembly drive shaft oil seal and dust
cover seal replacement.

Refer to the ESM and ITB17-001 for additional SERVICE INFORMATION regarding front passenger (RH)
side drive shaft removal and installation.

DO NOT REPLACE the transfer assembly.
o This repair does NOT require transfer assembly removal from the vehicle.
o This repair does NOT require transfer cover removal from the transfer assembly.
o When replacing the drive shaft oil seal and the dust seal on 2019-2024 QX50 and 2022-2024
QX55 vehicles, it is recommended to remove the drive shaft support bearing bracket for additional
clearance.
Infiniti Bulletins are intended for use by qualified technicians, not 'do-it-yourselfers'. Qualified technicians are properly trained
individuals who have the equipment, tools, safety instruction, and know-how to do a job properly and safely. NOTE: If you believe that
a described condition may apply to a particular vehicle, DO NOT assume that it does. See your Infiniti retailer to determine if this
applies to your vehicle.
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REQUIRED SPECIAL TOOL(S)
New or replacement Essential Tools are available from Tech•Mate online: www.techmatetools.com, or by
phone: 1-833-397-3493.
When ordering, keep in mind that the tool part number prefix has changed from “J” to “NI”.
For example, J-52469-1 is now NI-52469-1.
J-52469-1
Seal Protector
Figure 1
J-8092
Driver Handle
J-52280
Driver Handle
Figure 2
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ITB21-023B
J-52282
Seal Installer
Figure 3
J-52390
Seal
Ins
Seal
Installer
Figure 4
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ITB21-023B
SERVICE PROCEDURE
1.

To avoid leak recurrence and damage to the transfer assembly, use care when removing the dust
cover seal and the drive shaft oil seal.

To avoid damage to the transfer assembly and new seals, use an appropriate seal installer and seal
protector during the repair.
Using a suitable tool, remove the dust cover
seal (not shown).

2.
Discard the dust cover seal, it will not be
reused.
Using a suitable tool, remove the drive shaft oil
seal (Figure 5).

Discard the drive shaft oil seal, it will not
be reused.
Drive shaft oil
seal
Suitable tool
Figure 5
To avoid damage to the new dust cover seal and the new drive shaft oil seal, lubricate the seal lips before
installation.
3.
Universal Driver
Handle J-8092
Install the new drive shaft oil seal.
Drive shaft oil
seal
a. Install the new drive shaft oil seal onto
Seal Installer J-52390 (Figure 6).
Seal Installer
J-52390
Figure 6
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ITB21-023B
b. With the help of an assistant, install the
new drive shaft oil seal into the transfer
assembly to the specified depth of
2.0-2.6 mm (0.079-0.102 in.) using
Universal Driver Handle J-8092 and Seal
Installer J-52390 (Figure 7).
Drive shaft oil
seal
Drive shaft oil
seal depth
Figure 7
4.
Install the new dust cover seal.
Suitable tool
Dust cover seal
Figure 8
a. With the help of an assistant, install the
new dust cover seal to the specified depth
of 0.0-0.6 mm (0.000-0.024 in.) using a
suitable tool (Figure 8 and Figure 9).
Dust cover seal
Dust cover seal
depth
Figure 9
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ITB21-023B
Drive Shaft Support Bracket Installation Recommendations (2019-2024 QX50 and 2022-2024 QX55)
To avoid leak recurrence and damage to the transfer assembly and new seals, follow the sequence below on
2019-2024 QX50 and 2022-2024 QX55 vehicles for drive shaft support bearing bracket installation.
1.
Place and hold the drive shaft support bearing
bracket into position, ensuring it is flat against
the engine block and flat against the transfer
assembly and loosely install the bolts
(Figure 10).
Finger tighten
this bolt first
Drive shaft
support bearing
bracket
Finger tighten
this bolt second
Figure 10
2.
While continuing to hold the drive shaft support bearing bracket into position, finger tighten the top drive
shaft support bearing bracket to engine block bolt first, and then finger tighten the lower drive shaft
support bearing bracket to engine block bolt.
3.
Finger tighten the drive shaft support bearing bracket to transfer assembly bolts.
4.
While continuing to hold the drive shaft support
bearing bracket into position, torque the top
drive shaft support bearing bracket to engine
block bolt to specification first, and then torque
the lower drive shaft support bearing bracket to
engine block bolt (Figure 11).

Torque this
bolt first
Drive shaft support bearing
bracket to engine block bolt torque:
48.0 N•m (4.9 kg-m, 35 ft-lb)
Torque this
bolt second
Figure 11
5.
Torque the drive shaft support bearing bracket to transfer assembly bolts to specification.

Drive shaft support bearing bracket to transfer assembly bolt torque: 48.0 N•m (4.9 kg-m, 35 ft-lb)
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ITB21-023B
PARTS INFORMATION
DESCRIPTION
MODEL
PART NUMBER
QUANTITY
NUT-HEX
(Axle Nut)
QX50, QX55
40262-4GA0C
1
QX60, QX60 Hybrid
40262-2Y00A
1
QX50, QX55, QX60, QX60 Hybrid
33114-4BA0A
1
QX60, QX60 Hybrid
40073-0L700
1
QX50, QX55, QX60, QX60 Hybrid
33142-4BA0B
1
QX50, QX55, QX60, QX60 Hybrid
11026-1CA0A
1
QX50, QX55, QX60, QX60 Hybrid
999MP-1XGPP0P (1)
As needed
SEAL-OIL, DRIVE
PINION
(Axle Seal)
PIN-COTTER
(Cotter Pin)
SEAL-OIL
(Dust Cover Seal)
GASKET-FILLER PLUG
(Gasket)
Genuine Nissan Super
Hypoid GL-5 80W-90
(Transfer Oil)
(1) Order this item through the Infiniti Maintenance Advantage program: Phone: 877-INF-IMA1 (877-463-4621).
Website order via link on dealer portal www.NNAnet.com and click on the “Maintenance Advantage” link.
CLAIMS INFORMATION
Reference the current Infiniti Warranty Flat Rate Manual and use the indicated Flat Rate Time (FRT) for the
repair performed.
AMENDMENT HISTORY
PUBLISHED DATE
REFERENCE
DESCRIPTION
October 25, 2021
ITB21-023
Original bulletin published
June 17, 2022
ITB21-023A
Changes throughout
December 13, 2023
ITB21-023B
APPLIED VEHICLES and Tech•Mate contact information
revised
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ITB21-023B