2015–2018 Terex C4000, 2015–2018 Terex C5000, 2015–2018 Terex C6000 and 1 other model Recall: Welds between the coupler and hex shaft may be undersized, causing them to…
NHTSA campaign 18V520000 · Equipment · filed Aug 7, 2018 · verified Jul 30, 2026
The defect
Terex south Dakota, Inc. (Terex) is recalling certain 2015-2018 Terex C4000, C5000, C6000, and General digger derricks. The welds between the coupler and hex shaft may be undersized, causing them to fail and the auger to fall unexpectedly.
The risk
If the auger falls, it can increase the risk of injury to the user or bystanders.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
Terex will notify owners, and dealers will either repair the weld or replace the affected component, free of charge. The recall began October 3, 2018. Owners may contact Terex customer service at 1-605-882-4000. Terex's number for this recall is SN665.
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Affected vehicles
Related recalls
More Terex C4000 recalls
- 2019–2026 Terex C4000 and 5 other models — An insufficient weld on the plate weldment may crack…
- 2022 Terex C4000 and 6 other models — A seam in the boom structure may have been improperly…
- 2022 Terex C4000 and 2 other models — Outrigger cylinder may have been machined incorrectly…
- 2008 Terex C4000 and 4 other models — TEREX TELELECT, INC
Other campaigns involving Terex vehicles
- 2025 Terex HR40 and 5 other models — Control valve may have been assembled with an incorrect…
- 2012–2025 Altec Aerial Device and 3 other models — Cable step wire rope assembly may be improperly secured…
- 2023–2024 Terex TL-Series and 1 other model — Jib extension hydraulic cylinder rod may have a weak weld…
Source: NHTSA recall database, campaign 18V520000 (manufacturer number SN665). Data last verified Jul 30, 2026.