I do not see the fan drive shaft over the eng. Do you need this shaft. I have two. could you let me know how tall the radiator core is in your unit shown? I am curious as to any radiator differences that might exist using your Hercules vs. the CAT 22 engines here in my CAT "POWER UNITS".
I just looked in my "tractor" book case and found many manuals (like John Deere 36 combine) and various similar equip. implements etc. if you're interested. I could make a list and post it.