How to maintain the forklift gearbox?

Every item needs our good maintenance before it can last longer, and the time accompanying us will increase. How to maintain the gearbox of the forklift?
Remember to park the forklift in a horizontal position after every 100 hours of operation. Unscrew the fuel filler cap on the forklift gearbox cover and check the oil level with the oil level gauge. The oil level should be scribed above and below the oil level gauge. Between, when the amount of oil is insufficient, it should be added in time.
And the lubricating oil of the gearbox is gear oil. Pay attention to keep the gear oil clean. There should be no mechanical impurities in the oil, otherwise it will accelerate the wear of the gear. When refueling, pay attention to the cleaning of the fueling tool and the fuel filler.