jd590d runs hot

My 1991 JD590D runs hotter than Id like on a hot day.I have a manual Murphy gauge its around 190-200 on a heavy dig. Rad is clean I think water pump is fine no coolant useage etc. it just seems like its borderline on cooling capacity. Others who have owned this model and its sister Hitachi 150 say similar things. Im thinking I want to fix this once and for all. One would think if I got a fan with more pitch in blades this would help the cooling a lot. No idea where to get such a thing.Was...

jd590d runs hot

jd590d runs hot