This Examination Thesis was done at the Blekinge Institute of Technology of Karlskrona. The work is a part of the education to Bachelor of Science in product development.The task consists of changing the steering wheel transmission of the DYNAPAC CA soil compactor machine made by Svedala Compaction Equipment AB.During the work we have followed the Fredy Olsson product development method. The work is divided in two parts: The Concept phase and The Primary Construction phase.In the Concept phase we first defined the project. After that we did investigations to find different solutions, which were electronic solution, hydraulic solution, gears and shafts, synchronous belts, single wire and double wires

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