Tractors and machinery for agriculture and forestry - Guards for power take-off (PTO) drive-shafts - Strength and wear tests and acceptance criteria (ISO 5674:2004, corrected version 2005-07-01)
Agricultural tractors -- Rear-mounted power take-off types 1, 2, 3 and 4 -- Part 3: Main PTO dimensions and spline dimensions, location of PTO— 22 стр.