This part of ISO 6489 specifies the dimensional requirements and location for category 0, 1, 2, 3, 4 and 5 drawbars mounted on the rear of agricultural tractors.
ISO 6489-3:2004 Referenced Document
ISO 14396 Reciprocating internal combustion engines - Determination and method for the measurement of engine power - Additional requirements for exhaust emission tests in accordance with ISO 8178
ISO 500-1 Agricultural tractors - Rear-mounted power take-off types 1, 2, 3 and 4 - Part 1: General specifications, safety requirements, dimensions for master shield and clearance zone*, 2014-04-01 Update
ISO 5673-2 Agricultural tractors and machinery - Power take-off drive shafts and power-input connection - Part 2: Specification for use of PTO drive shafts, and position and clearance of PTO drive line and PIC for various attachments*, 2005-02-01 Update
ISO 789-1 Agricultural tractors - Test procedures - Part 1: Power tests for power take-off*, 2018-02-01 Update
ISO 6489-3:2004 history
2021ISO 6489-3:2021 Agricultural vehicles - Mechanical connections between towed and towing vehicles - Part 3: Tractor drawbar
2004ISO 6489-3:2004 Agricultural vehicles - Mechanical connections between towed and towing vehicles - Part 3: Tractor drawbar
1992ISO 6489-3:1992 Agricultural vehicles; mechanical connections on towing vehicles; part 3: tractor drawbar