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I got a question on my U model, but its on all macks.

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i got a question. my serial number of my u model is U685ST11692. on that triangular thing on the inside of the cab there is a number. it doesnt relate with the serial of my truck cause this one starts with like 48 or someting like that. this is the best picture i got of it. i looked in my service manual and it said it was the cab serial number. what does it mean? im confusing my self.


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The cab serial number is really of no use once the truck is assembled from the factory. The cab serial number was used during production to build the cab on it's respective line which was independent of the chassis assembly line. Once the cab and chassis are married together, any correspondence follows the assigned vehicle identification number or serial number of the truck.


Dog.jpg.487f03da076af0150d2376dbd16843ed.jpgPlodding along with no job nor practical application for my existence, but still trying to fix what's broke.



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