Resumo

GONZALEZ-ROJAS, Deyvis; HERNANDEZ-GOMEZ, Antihus A.  e  SHKILIOVA, Liudmila. Adaptability of tractors Maxxum Marries 150 and New Holland TM-7010 for operations of technical maintenance. Rev Cie Téc Agr [online]. 2017, vol.26, n.2, pp. 23-30. ISSN 2071-0054.

Maxxum Case 150 and New Holland TM - 7010 tractors are part of the new technologies introduced in Cuba which works in “Jesus Rabí” Enterprise Unit (UEB), Matanzas Province. The objective of the present investigation is to determine the level of adaptability of these tractors, to know the reality about the fulfillment of the daily technical maintenance operations (every 10 h) and Technical Maintenance Type 1 (MT-1) every 50 h, as well as the working comfort of operators during their execution in real conditions of operation. Quality standards and observation methods combined with other procedures or techniques like interview, questionnaire and timing are used in order to determine the level of adaptability. The level of adaptability for the technical service was determined by calculating the quantitative maintainability indicators that characterize the adaptation of the machines design for technical maintenance operations. It was found that in the production conditions not all operators of Maxxum tractors comply strictly with the periodicity of technical maintenance, only 92% of the lubrication points for both cases are lubricated. Comfort coefficient of the position; coefficient of accessibility and coefficient of the working tension during the maintenance operations reach values ​​of 0.66 and 0.67; 0.74 and 0.73; 1.66 and 1.69 for Maxxum Case 150 and New Holland TM-7010 tractors, respectively

Palavras-chave : Quality standards; interview; questionnaire; timing.

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