DC questions

Is there a list of when changes came and what parts interchange amongst the various changes that DCs went through?

Are the 3 lug cast wheels the same on the older narrow front tractor as my DC4 wide front?

It had a PTO but I didn't see a lever like my DC4 has to engage and disengage the PTO, Does trhis mean the PTO parts wouldn't fit?

Are the rest of the hydraulics the same other than the valve on 1 vs 2 spool?

The fenders were decent but had a cast mount to the axle and appear to be shorter without the cast mounts than my fenders attached with u-bolts. When I saw them, I wondered if they would fit mine with the loader uprights mounted to the axle.

Thanks for recent answers here.

So the PTO would not be any spare parts for my live PTO? Poop! Does this make the trans and differential different as well? My PTO does not release 100% but feels to be adjusted correctly per the owners manual that I have a photo copy of. When the post hole digger was up in the air the auger was spinning and would stop when I put it on the ground. Then I'd engage it via the lever by the seat and drill holes.

On the hydraulics, would the complete pumps interchange? I have the 2 spool and am using the up/down pressure on the cultivator lift for the 3 pt (NOT eagle hitch). It was great having downforce for the post hole digger but I'm planning on a spool with float and up/down force for the 3 pt to do other tasks. So my other valve would only lift the loader when it is installed? That would put a 3 spool valve into the future plans because I wasn't sure how much use I could get from the trip bucket.

There is only one PTO/hydraulic housing 4367AA listed in my parts manual, so the one valve pump and two valve pump should interchange.

I am not a hydraulic expert but in looking at the system I don't know why you couldn't get up and down pressure from the upper valve (The one normally used by the eagle hitch. When you pull the lever back (down) in addition to allowing fluid to come back from the cylinder the spool valve sends pressurized fluid out to the filter unit and back into the reservoir. If you eliminated the filter it seems to me you could feed a two way cylinder and get up and down force...not sure what to do about filtration however???