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Message: <blockquote data-quote="Tazza" data-source="post: 26009" data-attributes="member: 82">The pedals freeze up? san you explain this a bit more? it sounds like you have a restriction somewhere that is causing the oil to heat up. The controls should still be free to move though and not freeze up, unless its a newer electronic machine. I know my 753G has pedal lockouts that are controled by the computer, yours may be the same? If thats the case, it could be a safety device engaging to prevent damage to the hydraulic system.Ok the things that can cause hydraulic oil to heat:Blocked oil cooler fins or a bad cooling fan. This is usually used for the engines radiator too, so the engine temp should rise if this was a problem.Pump cavitation due to air in the system or blocked pickup screen filter.Aux hydraulics stuck on causing the oil to run over the relief valve. Normally when this happens, you will have a lack of lift and tilt power.Those are the fet things i can think of off the top of my head. I don't think a bad pump would cause this, if the pump was bad it would simply not pump as much oil but won't over heat the entire system. Your lift and tilt would be very slow and lack power all the time as well.</blockquote>