Altec has learned that the structural subbase welds on certain DH derricks built from July 2016 to...
Altec technical service bulletin SIL-3157 for 2016-2023 Altec Digger Derrick.
- Bulletin number
- SIL-3157 (SIL-3157)
- Component
- Unknown or other
- Summary
- Altec has learned that the structural subbase welds on certain DH derricks built from July 2016 to December 2023 could contain stitch welds rather than the required continuous welds, which could result in cracks forming in the subbase.
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