2016 Caterpillar CT660 Recall: Castellated nut on the steer axles may not be properly torqued, allowing…
NHTSA campaign 17V641000 · Steering · filed Oct 11, 2017 · verified Jul 30, 2026
The defect
Caterpillar Inc. (Caterpillar) is recalling all 2016 Navistar CT660S trucks equipped with certain Spicer D or E series steer axles. The castellated nut on the steer axles may not be properly torqued, allowing the tie rod to loosen.
The risk
If the tie rod loosens, it may disconnect from the steering knuckle, causing a complete loss of steering and increasing the risk of a crash.
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
Caterpillar will notify owners, and dealers will tighten the castellated nut and tie rod, replacing them as necessary, free of charge. The recall began on December 08, 2017. Owners may contact Caterpillar customer service at 1-800-447-4986.
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
| Make | Model | Model years |
|---|---|---|
| Caterpillar | CT660 | 2016 |
Related recalls
More Caterpillar CT660 recalls
- 2015 Caterpillar CT660 and 1 other model — Affected vehicles may experience brake drag due to an…
- 2012–2013 Caterpillar CT660 — In the affected vehicles, the brake S-cam brackets may…
- 2012–2014 Caterpillar CT660 — Certain side marker lamps and/or reflective tape were not…
- 2012–2013 Caterpillar CT660 — Service Brakes, Air
Source: NHTSA recall database, campaign 17V641000. Data last verified Jul 30, 2026.