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Service bulletin SIL 819

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 id10200405
Published by NHTSA2021-08-16
Manufacturer's numberSIL 819
Manufacturer's date2021-08-13
NHTSA componentEQUIPMENT; SUSPENSION

NHTSA's summary

Certain 2017-2020 Ford F350/F450/F550 chassis with Timbren springs installed near the chassis front coil springs can loosen over time and could eventually become disconnected. Altec requires the Timbren springs to be inspected no later than the next preventive maintenance interval or 90 days from the receipt of this SIL, whichever comes first. 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.

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

Equipment and accessories, Suspension

Vehicles listed
ALTEC AERIAL DEVICE2017 to 2020

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