Is the K1 loader designed to fit the 235? The 235 is pretty small. I have a KMW K-95 loader on my 244. The 244 is one generation older and one size larger that your 235. My tractor has an IH Hydraulic adapter package installed to allow a loader to be powered. The IH part number for the package is 1288 102 C92. It is mounted on the left rear of the tractor just under the left rocker arm. It is placed between the hitch housing and the hydraulics system pressure relief valve. It looks like the adapter for a 235 is 1288 348 C91. If you can't get that you will have to custom plumb the loader.
Bill