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Service bulletin FDM-TSB-003

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 id10199840
Published by NHTSA2021-08-04
Manufacturer's numberFDM-TSB-003
Manufacturer's date2021-07-08
NHTSA componentEQUIPMENT

NHTSA's summary

This bulletin provides information and instruction on removing the water add valve from the charge hopper location and installing a new air operated valve at the water manifold located on the frame rail. Moving the water add valve eliminates freezing issues and improves water system performance.

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

Vehicles listed
OSHKOSH S SERIES

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