OPERATIONAL PERFORMANCE TEST / Introduction OPERATIONAL PERFORMANCE TESTS Use operational performance test procedure to quan- titatively check all system and functions on the ma- chine. Purpose of Performance Tests 1. To comprehensively evaluate each operational function by comparing the performance test data with the standard values. 2. According to the evaluation results, repair, adjust, or replace parts or components as necessary to restore the machine’s performance to the desired standard. 3. To economically operate the machine under op- timal conditions. Kinds of Tests 1.
Base machine performance test is to check the operational performance of each system such as engine, travel, swing, and hydraulic cylinders. 2. Hydraulic component unit test is to check the op- erational performance of each component such as hydraulic pump, motor, and various kinds of valves. Performance Standards “Performance Standard” is shown in tables to evalu- ate the performance test data. Precautions for Evaluation of Test Data 1. To evaluate not only that the test data are correct, but also in what range the test data are. 2. Be sure to evaluate the test data based on the machine operation hours, kinds and state of work loads, and machine maintenance conditions.
The machine performance does not always deterio- rate as the working hours increase. However, the machine performance is normally considered to re- duce in proportion to the increase of the operation hours. Accordingly, restoring the machine perform- ance by repair, adjustment, or replacement shall con- sider the number of the machine’s working hours. Definition of “Performance Standard” 1. Operation speed values and dimensions of the new machine. 2. Operational performance of new components adjusted to specifications. Allowable errors will be indicated as necessary. T4-1-1