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Service bulletin T79004

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 id10123458
Published by NHTSA2017-11-14
Manufacturer's numberT79004
Manufacturer's date2017-10-01
NHTSA componentTRAILER HITCHES; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

NHTSA's summary

Operation Name: Hendrickson Trailer Commercial Vehicle Systems Document Name: Technical Bulletin - Loading Dock Approach Procedure for Trailers Equipped with SURELOK and Specialized Auto Dump Summary: This document provides loading dock approach procedures for trailers equipped with Hendrickson SURELOK ride height lock systems and a specialized auto dump.

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, Labels and manuals, Trailer hitch

Vehicles listed
HENDRICKSON UNK

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