Case 446 hydraulics

Recently, something got jammed in the rototiller. The hydraulic hose blew off the resivoir, and all the fluid came out. I replaced the flexible hose, tightened it, and replaced the hydraulic fluid with hydraulic fluid. The tractor sputtered for less than a second when I turned it on, and it hasn't moved since.

I have since heard that the Case 446 dosen't use hydraulic fluid for the hydraulic system, but instead uses motor oil. If that is true, (is it?) have I damaged the hydraulic pump by putting hydraulic fluid in it? Should I drain it and put motor oil in it? If I have to replace the hydraulic pump, do I use hydraulic fluid or motor oil?

Also I have just heard that I may have to bleed the air out of the line, and that the tractor will run if I do that. It makes sense to me. Is that true? If so, where do I bleed the line from?

Also, can someone tell me where the hydraulic pump is located on the tractor?

Thanks.

Mike McPhillips

There should be almost no pressure on that line.

Do you have the case PTO valve on the back of the tractor? Or, do you possibly have a direct hose connection pump to tiller?

Oh, and yes do change the oil. Case recommends 30w or 20w40 but a 15w40 or 15w50 works fine.

I have a 1971 Wards garden tractor with hydrostatic drive and hydraulic lift that I bought new and they recommend Dexron automatic fluid. Using engine oil in your area would get very thick during the winter. I use my tractor for pushing snow and for plowing the garden. It has hauled many loads of firewood over the years too. Hal

I have a lot of equipment around the house, including a 1940 ford tractor. I don't abuse it.

The first mechanic that changed the pump thought someone had put gravel in resivoir. The pump he put in gave out when i hooked the rototiller up the following spirng. No rototilling. Just hooked it up and the pump blew. He charged me a lot to replace that pump - I thought he overcharged me. So I took it to a different mechanic, and he charged me less than 1/2 of what the first guy did.

That pump has been in about 3 years. As I explained, this time, the flexible hose blew off, and I replaced the fluid with actual hydraulic fluid. As far as I know, the pump was working when I replaced the fluid. The tractor actually engaged forward for a brief second (actually less than a second). So I wonder now if the hydraulic fluid ruined the pump, or if the hydraulic fluid, which is less viscous than the oil, is simply not viscus enough to drive the tractor. Does that make sense, or am I off base.

I will be doing the work myself, this time, which is why i have all the questions.

MM