{"nhtsa_id":10191599,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-05-04","date":"2021-04-09","document_id":"SIL 795","mfr_campaign":null,"replaces":null,"component":"STRUCTURE","mfr_system":null,"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.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10191599-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10191599-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10191599","components":[{"id":"structure-body","name":"Body and frame","parent":null}],"codes":[],"topics":["maintenance"],"vehicles":[{"make":"ALTEC","model":"DIGGER DERRICK","year_from":2005,"year_to":2020,"match":null,"vehicle_ids":[]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}