Assembly instructions to secure quality in final assembly

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The preparations of assembly process for process changes at Scania final assembly work-shops are prepared at development line in Södertälje. The work is done by assembly per-sonnel, product preparators and product engineers together. The process preparation is anchored and delivered before start of production to the final assembly factories of Scania in Södertälje, Zwolle, Anger and Sao Paolo. This way of working was introduced year 2000 and to day, Scania perceive a need of analysing and improve the assembly in- structions/product description. The task with this thesis are consequently that through analyse of the different types of assembly instructions available inside and outside of Scania produce a proposal for Scania, how to describe the truck to facilitate and insure the quality of the final assembly. A current state analysis have been done to identify and map out which instructions who are available to day, which are the needs of the assembly personnel are in a quality se-cured assembly point of view and how the final assembly factories want the product to be described. Furthermore a extensive benchmarking been carried through to identify how other producing companies creates assembly instructions and what they contain. Through systematic analysing of the material and with help of SPS (Scania Production System) proposals have created to describe the product in the future so that a truck should look the same independent of which final assembly it was build in. The results that have been created are:

• Decision template, shall work as a template to know when an instruction should be made.
• Tempo description, a instruction who describes the truck in a part level.
• Introduction kit, should be created when there are a major introduction.
• Work order, a simple way for the operator to get required information for a specific truck.
• Bench marking, describes how competitors and factory's with similar production does it to day.

During the work, a feeling of that it might not are the tools that hade greatest need of be-ing deve...