Answer
Sep 24, 2025 - 03:31 PM
Sounds like you’ve got a hydraulic issue going on there. On the Toyota 8FDU30, if tilt and carriage down aren’t working, first thing I’d check is fluid level — low hydraulic oil can cause strange behavior. If fluid’s fine, then look at the lift/tilt control valve. Sometimes a stuck spool or blocked line will give you dead functions like that.
Also worth checking the tilt cylinders themselves — if they’re bypassing internally, you’ll lose movement. But since you’ve got both tilt and carriage down not responding, it leans more toward a control valve or hydraulic flow problem, not just one cylinder.
Fortunately, this Toyota 8FDU30 Forklift OEM Service & Repair Manual actually has a hydraulic troubleshooting section with pressure test points and step-by-step checks. That’ll let you confirm if the pump’s putting out the right pressure and whether the valve’s directing flow where it should. I recommend grabbing one if you're trying to solve this on your own.
