Change the transmission fluid in a forklift by running the engine until it is warm and placing a pain underneath the forklift. Remove the drain plug from the transmission drain pan, drain the old fluid and replace it with new transmission oil or fluid. Consult the owner's manual to select the proper type for the specific model.Continue Reading
Generally, the transmission fluid in a forklift should be changed every 600 hours. At the same time, check the brake fluid, hydraulic pump fluid and drain the fluid from the water separator, if applicable.
Place the drain pan under the forklift.
Run the forklift's engine for a few minutes to heat up the transmission oil.
Remove the drain plug from the transmission oil pan using the appropriate-sized wrench. Remove the plug and allow the oil to drain.
As the oil drains, inspect the drain plug to look for signs of wear or damage. .
After the oil drains, replace the drain plug. If worn or damaged, replace with a new one.
Place the drain pan under the transmission filter and remove the filter using an oil filter wrench.
Place a little oil around the rubber seal of the filter.
Replace the oil filter tightening just until the rubber seal makes contact. Turn the filter another half turn.
Refill the engine with transmission oil or fluid, depending on the model. Dispose of the old oil in accordance with state and local laws.
Run the forklift for a few minutes and check for leaks. Check it again after one hour.