New Holland LT185.B, 2006 yr, 1600 hrs. Picked up a load of top soil and I drove about 300 yards to dump it on my ditch bank and the bucket would not go up...it's stuck resting all the way down. No noise, no anything. Tilt and everything else is normal. I had only been operating it for about an hour, and lightly.

The foot pedals are free and clear of dirt under them. I have full hydraulic fluid. No breaks in the lines.

The left pedal (vertical movement) feels locked, like it does when my seat belt isn't clasped. I cycled ignition and drove the loader around and that did not help. Also there are no dummy lights on and I cycled the safety brake on/off and seat belt clasp several times too.

Has anyone an idea of what I can check next?

If the verticals control is "locked", I would check to see if there is a safety interlock that prevents up or down movement while in motion. In other words, certain conditions need to be met in order to raise or lower the bucket.

From your description, there is at least one connected to the seatbelt.

Thanks. There are safety features that keep boom from moving but it should have boom lift when moving or still. Just as long as the seat belt is clasped, seat is being sat in, and the brake is off. Someone on another site said to remove a solenoid or two in hydraulic box and see if they're stuck/frozen. I'm going to check all the wiring relating to seat and belt and see if something wrong there also, but they seem to be fine because all the other features work OK.

Solenoids and relays are frequently used as interlock controllers and are subject to failure.

There may be a "lock" on the peddle or there may be a line lock that halts the movement of the hydraulic fluid.