IHC 284 3 point hitch hydraulics quit.

[exendogirl]

IHC 284 3 point hitch lifted fine one day and the next day didn't. Mower deck is on the ground. Changed the hydro fluid, which was milky, and the filter, but to no avail. The mower is still on the ground. Tried turning the lift speed valve in and out, but that did no good either. I'm completely lost, as these tractors seem to be orphans anyway. Could some give me a direction. Any advice is greatly appreciated!

 

[Mrfred54]

Is the pump turning. It is mounted to the front of the crankshaft. Maybe bad coupling

 

[exendogirl]

The pump is turning, and there are no visable leaks. The rockshaft can be jacked up and down, so it still moves freely.

 

[used red MN]

IHC 284 3 point hitch lifted fine one day and the next day didn't. Mower deck is on the ground. Changed the hydro fluid, which was milky, and the filter, but to no avail. The mower is still on the ground. Tried turning the lift speed valve in and out, but that did no good either. I'm completely lost, as these tractors seem to be orphans anyway. Could some give me a direction. Any advice is greatly appreciated!

I see you posted about this last November. I would recommend you get a service manual to help you out.
Service Manual for IH 284 from YT
Also check your PMs (letter icon)