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The research was carried out under the conditions of harvesting and repair of the Agricultural Base Business Unit (UEBA) "Sierra Maestra", in the New Holland L-521, L-624, L-626 rice harvesters. The objective was estimating and checking the maintainability of the rice harvesters during daily technical maintenance, every 30 hours and during the harvest period under the conditions of "Los Palacios" Agroindustrial Grain Company (EAIG). Through mathematical analysis, average daily and periodic technical maintenance time every 30 h was determined. In the investigation, what the same authors did in 2017 was validated. Among the most significant results is that: for the harvesters evaluated, the maintainability curve shows that there is between 95.8...97% probability that the daily technical maintenance is carried out in two hours; while in technical maintenance every 30 hours the probability is 74...78% in the same period. [ABSTRACT FROM AUTHOR]

The research was carried out in the conditions of harvest and repair of "Sierra Maestra", Agricultural Base Business Unit (UEBA) in New Holland L-521, L-624, L-626 rice harvesters, in the daily technical maintenance operations, every 30 h periods, with the objective of estimating their maintainability. Through mathematical analysis, average time of daily and periodic technical maintenance every 30 h was determined. In the research, the estimation of maintainability for real operation conditions is made for the first time. Among the most significant results is that for the harvesters evaluated, the maintainability curve shows that there is between 95.8 and 97% probability that the daily technical maintenance will be carried out in two hours; while in technical maintenance every 30 h the probability is between 74 and7 8% in the same period of time. [ABSTRACT FROM AUTHOR]