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Service bulletin L778, Rev. D

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 id10129586
Published by NHTSA2018-03-05
Manufacturer's numberL778, Rev. D
Manufacturer's date2017-12-01
NHTSA componentSUSPENSION; TRAILER HITCHES

NHTSA's summary

Operation Name: Hendrickson Trailer Commercial Vehice Systems Document Name: Technical Procedure - HN or HP Spindle, Weld-on ABS Bracket Field Installation Procedure Summary: This document provides installation instructions for weld-on ABS brackets on Hendrickson INTRAAX, VANTRAAX and ULTRAA-K suspension and axle systems with HN or HP spindles.

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

Suspension, Trailer hitch

Vehicles listed
HENDRICKSON HENDRICKSON

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