Where is the filler hole for hydraulic fluid on a Ford 6600 tractor?

On a Ford 6600 tractor, the filler hole for hydraulic fluid is typically located on the top of the transmission case. You can find it near the rear of the tractor, usually marked with a yellow cap. It's important to check the owner's manual for the exact location and to ensure proper fluid levels. Always make sure the tractor is on a level surface before checking or filling the hydraulic fluid.