Altec A-CLASS

Published

2021-10-18

Model years

2005–2021

Issue: On certain aerial devices, the hydraulic control system for the boom may not work properly in extremely cold temperatures. As a result, the upper and lower booms could continue to move after the joystick or interlock is released. Safety Risk: A boom that continues to move after the operator releases the controls could increase the risk of injury to the operator and nearby people. Corrective Actions: Altec Industries will notify owners by mail and instruct them to install a jumper hose and check valve between the boom tip tank hydraulic lines. Owners will also be instructed to replace the over-center blocking cartridge. These repairs should be done prior to operating the unit in cold weather conditions.