2012 Terex Digger Derrick Problems, Complaints & Recalls

Problem: Terex South Dakota (TSD) is recalling certain 2007-2016 vehicles equipped with Terex C4000, FC, HR, HRX, SCM, TC, TCX, TL, TPL, and XT aerial devices and digger derricks used for utility line work. In the event of a short circuit of a tool plugged into the onboard electrical socket, the GFPE breaker may not trip at the proper current before the user receives a shock.

Risk: Without proper protection against electrical shock, the user has a greater risk of injury.

Fix: TSD will notify owners, and dealers will replace the breakers with GFCI breakers that will trip at a lower current, free of charge. The recall began on June 27, 2017. Owners may contact TSD Customer Service Department at 1-800-982-8975. TSD's number for this recall is SN658.

Problem: Terex South Dakota (TSD) is recalling certain 2012-2017 Digger Derricks and Aerial Devices, models C4000, C5000, C6000, C7000, General, HR, OM, RM,RMX, SC, SCM, TC, TCX, TL, TM, and XT, built on Freightliner chassis with SmartPlex engine controls. The vehicles have a switch to monitor whether the hood is open or not. If the switch thinks that the hood is open, the vehicle software may disable the Aerial or Digger Derrick remote engine control functions.

Risk: If the hood switch prevents the remote engine controls from shutting the vehicle engine down in the event of a hydraulic issue on the Aerial or Digger Derrick, it may increase the risk of an injury.

Fix: TSD will notify owners, and dealers will reprogram the vehicles to only disable the engine start function if the switch indicates that the hood is open, free of charge. The recall began on June 28, 2017. Owners may contact TSD Customer Service Department at 1-800-982-8975. TSD's number for this recall is SN659.

Problem: Terex is recalling certain model year 2012-2013 Aerial Devices and Digger Derricks manufactured September 2012 through February 2013. The lock valve cavity in the outrigger cylinder may be machined incorrectly and the seals may be damaged.

Risk: Damaged seals may allow the outrigger to drift. If the outrigger cylinder drifts, stability may be affected and the unit may overturn, increasing the risk of injury.

Fix: Terex will notify owners, and dealers will inspect the affected outriggers to determine if they were machined correctly. The inspection and any necessary repairs will be performed free of charge. The recall began on May 30, 2013. Owners may contact Terex at 1-605-884-3892. Terex's recall campaign number is SN607.

Problem: Terex South Dakota, Inc. (Terex) is recalling certain model year 1999-2012 XL4000 Digger Derrick utility trucks. The shims and spacers used to adjust the length of the hydraulic cylinder may give, causing the rod eye and threads to fatigue while lifting loads.

Risk: The hydraulic cylinder may separate from the digger derick arm, allowing it to collapse without warning, increasing the risk of injury to the operator or those nearby.

Fix: Terex will notify owners, and dealers will inspect and replace the rod eye and threads, as necessary. The existing shims and spacer will be replaced with a hardened spacer. All repairs will be made at no charge to the owner. The recall began on May 23, 2013. Owners may contact Terex at 1-605-882-4000.