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Service bulletin SIL 850

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10210823
Published by NHTSA2022-05-03
Manufacturer's numberSIL 850
Manufacturer's date2022-05-03
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

The body compartment wiring on certain Altec aerial devices, digger derricks, and body-only units built from 2014 to 2021 contains an in-line fuse located close to the lighting in the compartment, while other units are fused upstream, closer to the power source. Altec has learned that the units affected should have an in-line fuse close to the lighting, but this fuse was not installed on some units. In addition, some units may have exposed terminals at the end of certain portions of the wiring in the body. If the exposed terminals contact each other or with ground, the resulting direct short could damage the body compartment lighting. Inspect the body compartment lighting circuit at the unit's next scheduled service interval or within six months of receiving the SIL, whichever comes first. Use the Inspection Procedure or contact Altec to perform the inspection. This inspection and repair are covered under the Altec Warranty Policy and can be performed by Altec, the customer, or the customer's warranty provider. Altec will perform the work for free at an Altec facility. If the customer or the customer's warranty provider performs the work, a warranty claim must be submitted to be reimbursed for the cost of the parts and/or labor.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system

Vehicles listed
ALTEC AERIAL DEVICE2014 to 2021
ALTEC DIGGER DERRICK2014 to 2021
ALTEC SERVICE BODY2014 to 2018
ALTEC SERVICE BODY2020 to 2021

Listing a model year does not mean every vehicle of it is concerned: the document says which.