Case 580c backhoe brake fluid

[yanmars]

My brother has a Case 580c backhoe with no brakes. The master cylinder is empty of fluids. There is some dispute if DOT 3 or hydraulic fluid is needed on certain years. Nothing in his manuals and nothing on the master cylinder caps. The serial number on a tag on the engine is 2848980 in small letters, above it in larger print is the number 2870 if this helps in his request. The PTO reservoir is empty also, just PTO fluid? Any help is appreciated. Thanks

 

[Engineer42]

Should be DOT 3. Hyd oil was D model up.

Pto reservoir??? You mean hyd tank?

 

[TractorTech]

Being that the PTO system is a hydraulic pump and motor, a premium hydraulic/transmission oil is the recommendation. Don't expect much from that PTO system though.

And dot 3 is the brake fluid in that system