WenmarOpen by Wenmar Pro

Service bulletin SB 3113B

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 id10164618
Published by NHTSA2019-09-09
Manufacturer's numberSB 3113B
Manufacturer's date2019-08-20
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

This Service Bulletin informs owners of D series coaches equipped with a Delco 55 SI alternator MCI P/N (07-03-1310) to clean the alternators every 6,000 miles using the procedure as recommended by Delco.

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

Electrical system

Vehicles listed
MCI 4000ISTV2017
MCI D40002016 to 2017
MCI D4000ISTV2016
MCI D40052016 to 2018
MCI D45002016 to 2018
MCI D45052016 to 2018

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