WenmarOpen by Wenmar Pro

Service bulletin FDM-TSIB-026

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 id10198992
Published by NHTSA2021-07-07
Manufacturer's numberFDM-TSIB-026
Manufacturer's date2021-06-16
NHTSA componentPOWER TRAIN

NHTSA's summary

This bulletin provides instruction for replacing the mixer pump PTO shaft, mixer pump input yoke, and mixer pump input yoke bearing U-bolts to the current production configuration. The new PTO shaft is larger with greaseable crosses and requires a new mixer pump input yoke and replacing the input yoke bearing U-bolts with bearing straps.

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

Transmission and driveline

Vehicles listed
OSHKOSH S SERIES1978 to 1993
OSHKOSH S SERIES1997, 1998, 1999, 2000
OSHKOSH S-SERIES2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
OSHKOSH S-SERIES2013 to 2022

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

Recalls for the same vehicles and component
06V3900002006-10-12. POWER TRAIN:DRIVELINE

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
FDM-TSIB-0412023-05-06. Service bulletin. This bulletin provides information on topics specific to transmission high temperature warnings reported in the field. The topics listed were helpful in preventing transmission high temperature warning conditions.
FDM-TSIB-0272021-07-07. Service bulletin. This bulletin provides information for vehicle owners that have a Dana series 172 or 175 rear axle without a lubricant drain plug in the bottom of the axle housing.
Hendrickson TB-H2017-10-15. Service bulletin. This document is a sample customer letter and the technical service bulletin from Hendrickson. Hendrickson has determined that load span tag axles on Oshkosh S-Series concrete mixers develop cracking in the axle seat connections. Cracking would be found during routine vehicle inspections.