The DB41B is a tracked, off road back yard derrick product
Altec technical service bulletin CSN 755 for 2017-2020 Altec Digger Derrick.
- Bulletin number
- CSN 755
- Component
- Equipment: other: owners/service/other manual
- Summary
- The DB41B is a tracked, off road back yard derrick product. The upper boom extend function is intended to be disabled when the Hydraulic Overload Protection (HOP) system is activated. HOP activates correctly when the affected units are operated from the lower controls. However, Altec has discovered that upper boom extend is not disabled when HOP is activated while operating these units from the radio controls. This is caused by an issue with the derrick control system firmware. Altec requires the derrick control system firmware version to be inspected using the AXIS Service Interface and following the Inspection and Update Procedure beginning on page 2. If the inspection indicates that the derrick firmware version is incorrect, the firmware must be updated as described.
Vehicles covered
- Altec Digger Derrick 2017-2020 2017201820192020
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