12/31/2022 0 Comments Driving a mf multipower![]() ![]() The manually operated governor control mechanism is set to provide the high-idle speed specified by the manufacturer. These settings must be maintained for the remainder of the test. During a preliminary power take-off run the manufacturer's representative may make adjustment for the fuel, ignition or injection timing and governor control settings. PTO Performance Power take-off performance runs are made by connecting the power take-off (or the belt pulley if no power take-off is available) to a dynamometer. The tractor is equipped with approximately the amount of added ballast that is to be used during the drawbar runs. Any parts added or replaced during the limber-up run, or any subsequent runs, are mentioned in the individual test reports. Preliminary adjustment of the tractor is permitted at this time. The tractor is limbered up for 12 hours on the drawbar, using each gear with light to heavy loads during the limber-up period. The operator's manual is also used as the guide for selecting the proper fuel and for routine lubrication and maintenance operations". ![]() ![]() Preparation for Test The engine crankcase is drained and refilled with new oil conforming to specifications in the operator's manual. The static tire loads and the tire inflation pressures must conform to the Tire Standards published by the ASAE and SAE. Additional weight may be added to the tractor as ballast if the manufacturer recommends use of such ballast. An official representative of the company is present during the test to see that the tractor gives its optimum performance. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. ![]() The manufacturer selects the tractor to be tested and certifies that it is a stock model. EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. ![]()
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