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Service bulletin FDM-TSIB-014

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 id10181120
Published by NHTSA2020-10-19
Manufacturer's numberFDM-TSIB-014
Manufacturer's date2020-09-08
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

This bulletin provides instruction and information on required vehicle hydraulic system updates that address performance deficiencies in the vehicle?s hydraulic system. The hydraulic water pump return hose needs to be rerouted directly to the hydraulic reservoir to eliminate the possibility of motor seal failure during different hydraulic load scenarios. The mixer motor drain hose needs to be rerouted to prevent oil overheating. Failure to complete these required system updates could lead to component failure.

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

Engine

Vehicles listed
OSHKOSH S SERIES

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