Application of technical diagnostics in the maintenance of the internal combustion engine of diesel multiple units 812 series.

Abstract The aim of the work was to characterize the maintenance of internal combustion engines of diesel multiple units of the 812 series, to process an overview of operational failures, to define methods and procedures for the identification of their actual technical condition. The first chapters are a summary of the prescribed procedures and methods for maintenance from the production of DMU 812 series to the present. The next part is focused on the description of the connection of diagnostic and control sensors in individual cable harnesses. At the end of the work is a proposal of the procedure for diagnosing combustion engine failures. To facilitate the work, a list of codes of individual faults was created with their translation into Slovak. Another tool that this work offers is the description and connection of individual sensor connectors on the engine in the EDC M(S) 5 cable harness.