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March 1, 2015 Service bulletin

Western star: truck parked extended time, and DEF freezes and with ice expaning breaks DEF line fitting...

Western Star technical service bulletin SB-49-16 for 2013 Western Star 4700.

Bulletin number
SB-49-16
Component
Engine and engine cooling: engine: diesel
Summary
Western star: truck parked extended time, and def freezes and with ice expaning breaks def line fitting connection to suction port and would need replacing. Model 4700.

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