# Service bulletin WSB\-49\-11

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.

- Type: Service bulletin
- NHTSA id: 10054667
- Published by NHTSA: 2014\-02\-13
- Manufacturer's number: WSB\-49\-11
- Manufacturer's date: 2013\-12\-01
- NHTSA component: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY

## NHTSA's summary

WESTERN STAR: WHEN TRUCK SITS, FOR ANY EXTENDED PERIOD, WITH A DIESEL EXHAUST FLUID \(DEF\) SYSTEM, IT WOULD CRYSTALLIZED, IN THE TANK, AROUND FLOAT, ON DEF LEVEL SENDING UNIT TUBE AND NEEDS TO BE CLEANED. \*PE

## The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

## Components

Fuel system, Fuel tank

## Vehicles listed

- 2009 to 2014 WESTERN STAR 4700
- 2004 to 2014 WESTERN STAR 4900
- 2002 to 2011 WESTERN STAR 4900 SA
- 2006 to 2007 WESTERN STAR 4900EX
- 2004 to 2014 WESTERN STAR 6900
- 2009 to 2012 WESTERN STAR CONSTELLATION

## Other bulletins for the same vehicles and component

- [0607\-17](/bulletins/10158039.md), 2019-04-08, Service bulletin: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY. SPN 96 \(MCM\) \(GHG17\)
- [707\-13](/bulletins/10142015.md), 2018-06-18, Service bulletin: FUEL SYSTEM, DIESEL; FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES; FUEL SYSTEM, GASOLINE. 707\-13 Description and Operation of the HC Doser Fuel Supply Pressure Control Valve \- Two Filter System
- [706\-13](/bulletins/10142009.md), 2018-06-18, Service bulletin: FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:FUEL RAIL. 706\-13 SPN 157\-FMI 10, 15, 17, 18 \- GHG14
- [611\-13](/bulletins/10141884.md), 2018-06-18, Service bulletin: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY; FUEL SYSTEM, DIESEL. 611\-13 Removal and Installation of the GHG14 Six\-Gallon Diesel Exhaust Fluid Tank Header
- [0127\-17](/bulletins/10133579.md), 2018-04-16, Service bulletin: FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES; FUEL SYSTEM, OTHER. 0127\-17 SPN 1077 FMI 14 \(GHG14\) \(GHG17\) \(MCM\)
- [1110\-14](/bulletins/10120482.md), 2017-10-21, Service bulletin: FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES. 1110\-14 EPA10 DOC Inlet Pressure Sensor
- [WS\-49\-13](/bulletins/10055515.md), 2014-06-05, Service bulletin: FUEL SYSTEM, DIESEL: PRE\-HEATER; FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY. WESTERN STAR: AT RETURN LINE FITTING, DURING COLD EXTREME TEMPERATURES, THE DIESEL EXHAUST FLUID \(DEF\) TANK WOULD FREEZE. \*PE
- [SB\-49\-11](/bulletins/10055494.md), 2014-06-04, Service bulletin: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY. WESTERN STAR: IF DIESEL EXHAUST FLUID \(DEF\) SYSTEMS IS SITTING FOR EXTENDED TIME, IN TANK, WILL CRYSTALLIZE AROUND FLOAT OF LEVEL SENDING UNIT TUBE AND NEEDS CLEANING TO PREVENT A FALSE OR INCORRECT GAUGE READING. MODEL CONSTALLATION, 4700, 4800, 4900, 5900, 6900. NO YEARS LISTED. \*PE
- [FSC\-410A](/bulletins/10030666.md), 2009-11-09, Service bulletin: FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:FILLING/CHARGING; FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY; FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY. WESTERN STAR SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. CERTAIN VEHICLES MAY HAVE BEEN BUILT WITH 25 INCH DIAMETER FUEL TANK LEVEL SENDER ARMS AND FLOATS THAT MAY CONTACT THE TANK WALL AND GET STUCK, POSSIBLY RESULTING IN AN INACCURATE FUEL LEVEL GAUGE READING. \*PE

JSON: [/v1/bulletins/10054667](/v1/bulletins/10054667)

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