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May 1, 2013 Service bulletin

Mack trucks: new switch mounting bracket was developed to replace existing turn signal switch mounting...

Mack technical service bulletin FSB-364-035 for 2010-2011 Mack Gu, 2010 Mack Cxu and 2012-2014 Mack Granite (Gu) and others.

Bulletin number
FSB-364-035
Component
Exterior lighting: turn signal: switch
Summary
Mack trucks: new switch mounting bracket was developed to replace existing turn signal switch mounting bracket, due to contact between switch fingers and sleeping shaft, that caused switch operation to improperly cancels itself. Model chu, cxu, gu, td.

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