Some customers have reported cracks occurring in the stationary frame tubes above the chassis frame rails...
Altec technical service bulletin SIL 795 for 2005-2020 Altec Digger Derrick.
- Bulletin number
- SIL 795
- Component
- Structure
- Summary
- Some customers have reported cracks occurring in the stationary frame tubes above the chassis frame rails of some HD35A pressure diggers built from 2005 through 2020. Investigation has shown this to be caused by improper orientation of the spacer blocks welded to the bottom of the stationary frame tubes. Altec requires the stationary frame on each unit to be inspected no later than the next preventive maintenance interval. If the inspection shows that the spacer blocks are oriented incorrectly, the unit must be repaired no later than 30 days after the inspection using the Repair Procedure provided in the notification.
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