NHTSA Service Bulletin 10193118: 2016-2020 Altec Digger Derrick
Official manufacturer communication context for 2016-2020 Altec Digger Derrick, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.
Reviewed June 2026 from NHTSA manufacturer communication and service bulletin records. Carchieve is independent and not affiliated with any vehicle manufacturer or government agency.
A check valve is installed in the control valve for the front bumper winch on certain DC series derricks built from January 2016 through February 2021. Altec has discovered that the check valve has the potential for failure. When the check valve fails, the internal spring can dislodge from the housing and enter the hydraulic system. The hydraulic flow can carry it into the digger/winch control valve and cause one of the spools to bind in the closed position, disabling the function. Altec requires the 035240052 check valve to be replaced no later than the next preventive maintenance interval or 90 days from the receipt of this SIL, whichever comes first.
What this bulletin may mean before buying
Treat this as service research, not a verdict on one car. Before you buy, compare this communication with official recall campaigns, model-level owner complaint patterns, and the exact vehicle’s VIN-decoded specifications. A bulletin can help you ask a seller or dealer sharper questions about software updates, known repairs, warranty extensions and service history.
Affected products listed in this communication
Buyer checklist
- Run the 17-character VIN and confirm the year, make, model, engine and equipment match the listing.
- Check recall campaign pages for safety actions that may require dealer repair.
- Compare this bulletin with common problem pages for the same model and component area.
- Ask the seller or dealer whether the bulletin procedure, update or inspection has already been completed.
- Use the used-car buying checklist and get an independent inspection.
Frequently asked questions
What is NHTSA service bulletin 10193118?
A check valve is installed in the control valve for the front bumper winch on certain DC series derricks built from January 2016 through February 2021. Altec has discovered that the check valve has the potential for failure. When the check valve fails, the internal spring can dislodge from the housing and enter the hydraulic system. The hydraulic flow can carry it into the digger/winch control valve and cause one.
Is a service bulletin the same as a recall?
No. A recall is a safety campaign with a required remedy for affected VINs. A service bulletin or manufacturer communication usually describes diagnostic, repair, software, warranty or service information.
How should a used-car buyer use this bulletin?
Use it as a research signal. Compare it with recalls, owner complaints, service records, a VIN report and an independent inspection before buying.
Check the exact VIN before you buy
Model-level pages show public safety patterns. A full VIN report helps confirm the exact vehicle, decoded specs, recall applicability and buyer checks.
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