BS ISO 789-1:2018 pdf free

BS ISO 789-1:2018 pdf free.Agricultural tractors一Test procedures
In the case of a third party performing the assessment, the tractor manufacturer and the third party shall work together to select a tractor to be submitted for testing. The tractor submitted for the test shall require a serial number, shall comply with the manufacturer’s product specification, and shall be operated in accordance with the manufacturer’s instructions. The manufacturer shall provide a representative to be present throughout the entire testing of the tractor.
The tractor shall be new and run-in prior to the test in accordance with the manufacturer’s usual instructions. If a third party is responsible for the testing, the third party itself may run-in the tractor provided an authority of the manufacturer or the manufacturer s representative, who will remain responsible for the running-in, is obtained.
The adjustment of the carburettor or injection pump as well as the setting of the governor shall conform to the specifications provided by the manufacturer. The manufacturer may make adjustments in conformity with these specifications prior to testing, but adjustments shall not be made during the test.
Once the test has started, the tractor shall never be operated in a way that is not in accordance with the manufacturer s published instructions in the form of an operating handbook unless specifically required by test criteria and then only by arrangement with the manufacturer.
All repairs made during the tests shall be noted in the test report, together with comments on any practical defects or shortcomings about which there is no doubt.
Fuels and lubricants shall be selected from the range of products commercially available in the country where the equipment is tested, but shall conform to the minimum standards approved by the tractor manufacturer. If the fuel or lubricant conforms to a national or international standard, it shall be mentioned and the standard stated.
The fuel measurement apparatus shall be arranged so the fuel pressure at the carburettor or the fuel injection pump is equivalent to that which exists when the tractor’s fuel tank is half full. The fuel temperature shall be comparable to that which is found during full load operation for 2 h, when the fuel is taken from the tractor fuel tank.BS ISO 789-1 pdf download.