Provision of forest machines' maintainability and reliability

Improvement of the forest machines (FM) and processing equipment maintainability is a tool helping to increase efficiency of the timber industry as a whole. The lack of regulatory and technical documents on the duration and complexity of maintenance creates difficulties for the organization of rational technical operation of FM and their competitive pricing. To fill this gap a set of performance indicators of FM maintainability is proposed in the paper. Methods for assessing manufacturability during maintenance are discussed. Duration and magnitude of the complexity of activities of maintenance are defined and values of single and integrated maintainability indicators are calculated in experimental studies for forwarders "Komatsu". The resulting equation of the dependence of the complexity of operational planning of maintenance on the number of operations, types of tools, and a minimum number of performers can be used to predict complexity of operational planning of FM maintenance.