Western star: when truck sits, for any extended period, with a diesel exhaust fluid (DEF) system, it would...
Western Star technical service bulletin WSB-49-11 for 2004-2014 Western Star 4900, 2009-2014 Western Star 4700 and 2006-2007 Western Star 4900EX and others.
- Bulletin number
- WSB-49-11
- Component
- Fuel system, diesel: storage: tank assembly
- 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.
Vehicles covered
- Western Star 4900 2004-2014 20072008200920102011201220132014
- Western Star 4700 2009-2014 200920102011201220132014
- Western Star 4900EX 2006-2007 20062007
- Western Star Constellation 2009-2012 2009201020112012
- Western Star 6900 2004-2014 20072008200920102011201220132014
- Western Star 4900 SA 2002-2011 20042005200620072008200920102011
VIN decoder
See the problems and recalls for an exact car
Buying a used Western Star 4900?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history