2021-2023 Nissan Front Axle Thread Damage TSB

Why This Matters

When performing service that requires the removal of a front axle nut, technicians must take specific precautions to avoid damaging the axle threads. Improper removal can lead to significant issues, including costly repairs that may not be covered under warranty. This Technical Service Bulletin (TSB) from Nissan outlines the correct procedure and the essential tool required to prevent such damage.

The Issue: Nissan Front Axle Thread Damage

The front axle nut on affected Nissan vehicles is secured by "staking" it into an axle keyway. This staking mechanism, while effective for securing the nut, must be carefully removed before the nut itself can be unscrewed. If the staking is not properly disengaged, attempting to remove the nut can strip or damage the delicate threads on the axle shaft. Figure 2 in the original bulletin visually demonstrates the type of severe thread damage that can occur from improper removal. This type of damage necessitates further repair or replacement of the axle, adding significant time and cost to a routine service.

Recommended Tool and Procedure

To prevent Nissan front axle thread damage, Nissan mandates the use of a specialized "Cape Chisel" tool. This essential tool is designed to precisely remove the staking from the axle nut without harming the underlying threads. The original part number for this tool was J-52982, which has since been updated to NI-52982. This Cape Chisel became available to Nissan dealers in December 2020 to ensure proper service procedures.

For detailed instructions on using the Cape Chisel and the complete front axle removal and installation process, technicians should refer to the Electronic Service Manual (ESM). The relevant section is found under "TRANSMISSION & DRIVELINE > FRONT AXLE > REMOVAL AND INSTALLATION > FRONT DRIVE SHAFT > LH/RH." This section provides step-by-step guidance to ensure the integrity of the axle components.

Important Warnings

Nissan explicitly states that "Damaged threads, due to improper removal of the stake placed in the nut, will not be covered by warranty." This is a critical point for both technicians and vehicle owners. It underscores the importance of adhering to the specified procedure and using the correct tools. Owners should be aware that if their vehicle's front axle threads are damaged due to improper service, the repair costs may fall to them.

Required Tools or Parts

The primary tool required for this procedure is the specialized Cape Chisel.

• Cape Chisel: Part number NI-52982 (supersedes J-52982).

Additional tools may be purchased from Tech•Mate. Their website is www.techmatetools.com, and they can be reached by phone at 1-833-397-3493.

Bulletin History

This bulletin, NTB21-013A, is an amendment to a previous version, NTB21-013, which was originally published on February 26, 2021. The September 27, 2022, revision (NTB21-013A) updated the list of applied vehicles, provided new Tech•Mate contact information, and added the updated part number for the Cape Chisel. This revision ensures that the most current information is available to technicians.

What Owners Should Know

If your 2021-2023 Nissan Altima, LEAF, Pathfinder, Rogue, or Sentra requires service involving the front axle, it is important to ensure that your service center is aware of and follows Nissan's recommended procedures. While this bulletin is primarily for technicians, understanding the potential for Nissan front axle thread damage can help you have informed conversations about your vehicle's maintenance. Always ensure that qualified technicians perform any work on your vehicle to prevent issues that could void your warranty.

Source: NHTSA ID: 10222717