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Service bulletin SIL 781

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 id10186517
Published by NHTSA2021-02-04
Manufacturer's numberSIL 781
Manufacturer's date2021-01-22
NHTSA componentSTRUCTURE

NHTSA's summary

The receiver hitch capacity and warning placards were not installed on the affected units. Use of the hitch at loads higher than the design ratings due to the lack of these placards can overload the receiver tube, resulting in damage to the receiver tube and/or the bumper. The Receiver Hitch Placards Kit is included with the SIL. Altec requires this kit to be installed by the next preventive maintenance interval.

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

Body and frame

Vehicles listed
ALTEC ST SPRAY TRUCK2017 to 2020

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