m6800 no Hyd. pressure

[mike mack]

have a M6800s with no HYD. pressure, where do I start? Fluid level is good.

 

[GeoHorn]

Start with more information. Do you have a FEL (front end loader) and does it work at all?

Does the 3-pt hitch lift...at all?

HOW did you determine there’s no hyd pressure..?? Because of the failure of power steering? Or implements such as FEL/3-pt? Or did you actually put a gauge on it?

 

[North Idaho Wolfman]

Start with filter and then check suction lines then on to the pump.

 

[mike mack]

yes no hyd steering and 3 pt hitch not working or the bucket. They will jump a little but not go up.

 

[mike mack]

All good. The HYD. filters were frozen so thawed them out and good to go. New filters on order Thanks for the help. Mike

 

[fruitcakesa]

All good. The HYD. filters were frozen so thawed them out and good to go. New filters on order Thanks for the help. Mike

Water frozen in the filters?

 

[SidecarFlip]

You need to change the fluid and the filters. Fluid is contaminated, but before that you need to determine how the water got in the gearcase in the first place.

 

[mike mack]

I think it's the weather lots of warm days and cold nights. Condensation There are no leaks in the system and all caps closed and dipstick tight. Ever use methol hydrate??

 

[mike mack]

The fluid was just changed about 20 hrs. ago by the dealer .

 

[amschind]

I have run into a very similar issue on a new to me tractor but without the temperature component. Very sluggish and intermittent operation on power steering, PTO, aux hydraulic lines and 3-point arms. I replaced the pump anyway as I had already planned to do so and thus had one with no change. The supply hose looks great, but I found out that the fluid and filters are in fact old/of unknown age.

My current hope is that stirring up gunk plugged the filters and that a fluid and filter change will fix everything, but I am concerned about my next step if that doesn't get it done.