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Service bulletin FT4556R1

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 id10162328
Published by NHTSA2019-07-08
Manufacturer's numberFT4556R1
Manufacturer's date2019-06-28
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

Alternator Cable Rubbing on Thermostat Hose

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

Engine

Vehicles listed
NOVA BUS LFS ARTIC2017 (the catalog's model; the bulletin names a series or trim of it)

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

Recalls for the same vehicles and component
20191712019-04-05. Engine

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
LI5427E2023-12-22. Service bulletin. Improved durability of engine-side heat exchanger hoses.
FT46512023-08-17. Service bulletin. Failure of DEF sensor GEN 6 within the expected 5-years lifespan.
FT52432023-02-25. Service bulletin. ECP radiator failures deemed to be due to overpressure events.
APS5370E2023-02-24. Service bulletin. The Delco-Remy alternator is obsolete. Air cooled ductless (Almott) alternator, power cable and hardware kit to replace the Delco-Remy oil-cooled alternator.
PC1025R32022-02-04. Service bulletin. radiator leaking coolant
PC1025R22022-01-03. Service bulletin. Radiator leaking coolant
PC1025R12021-11-04. Service bulletin. Radiator leaking coolant
BS3457E2021-05-24. Service bulletin. Surge tank coolant supply Justify Coolant supply to MK2 radiator might be erratic and create air pocket in radiator
FT4869R12021-04-02. Service bulletin. Surge tank cover Chafing on Components
LI4494E2021-03-04. Service bulletin. Engine compartment junction block scheduled maintenance. This document is an addendum to Nova Bus Maintenance Manual section 19-401, outlining the need to monitor the condition of junction blocks and correct when required.