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Service bulletin MXR-TSIB-030

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 id10144248
Published by NHTSA2018-09-10
Manufacturer's numberMXR-TSIB-030
Manufacturer's date2018-08-15
NHTSA componentEQUIPMENT

NHTSA's summary

Some McNeilus concrete mixers have an optional operator presence ball valve on the optional washout system for the concrete mixer drum. The optional operator presence feature ensures if the operator takes his hand off the valve, the water for the washout system will shut off. This bulletin advises customers to verify that an adjusting nut and a jam nut should be present on the ball valve. If neither nut is present or if only one nut is present and is loose, there can be insufficient spring tension on the operator presence handle. This can lead to the valve opening and water being added to the drum without the driver knowing. Adding water unintentionally could increase the viscosity of the concrete such that the concrete doesn't meet the specifications of the desired concrete mixture. This bulletin applies to mixer trucks built between 01/01/2017 to 10/13/2017.

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
MCNEILUS BRIDGEMASTER V MIXER2017

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