In maintenance work machines; 1. Longevity 2. Efficient operation 3. The processes required for economic operation are called maintenance. Where, when and how to maintain the machines should be performed as specified in the maintenance instructions of the manufacturers. The most important condition for maintenance is record keeping. This is possible if the working hours, which show the working hours of the machine, are active. The operator should write down the value he reads from the working hour at the end of the day.

(evaluation of the general condition of the machine, checking and tightening of loose bolts) Completion It is the process of checking the oil, hydraulic and water used in the engine and other elements of the construction machine and completing it if it is missing. (engine oil, hydraulic oil, cooling water, accumulator fluid) Replacement It is the process of replacing some parts and auxiliary fluids used in machines with new ones at the end of their useful life. (engine oil, filters, tire, etc.) Adjustment If there is a situation that is above or below the operating instruction values in the work machines, it is the process that must be done in order to reach the specified value.