Оригинальный текст - Английский - Stop those irritating and costly external leaks...

Stop those irritating and costly external leaks before your unit is fitted into the car by using a simple method of "Air decay". Simply feed a regulated low pressure air supply.
Into the transmission and torque converter, normaly via the breather. Seal all open areas using either the original par tor alternatively suitable bung. When the unit reaches pressure close off the tap and walt to see if the gauge decreases even the smallest leaks show up very quickly.