Service
In production, the gearbox is filled with oil and does not require any further oil changes after that. However, the gearbox is fitted with 3 plugs; one filler plug (1), a level plug (2), and a drain plug (3). The plugs are used when work is done on the gearbox when the oil is drained. When checking the oil level and topping up with oil, the level plug is removed and oil is filled until oil drains from the level plug. Note that the drain plug contains a magnet. When refitted, the plug threads are coated with threadlocker. A "Dry" gearbox contains 1.9 litres of oil.
