never had that problem on my 760 but on a 7700 we used to own what would happen is the hyd spool for the auger wouldnt center and it would create a restriction int he system building heat... might be an idea to check linkagesIJ or similair thing of maybe the reel height solinoid hangingIJ Also maybe check for pinched lines. those were some of the things we had to go over on our 760 hyd heating problem.. turnes out when you add rear wheel assist there was an extra fan kit u had to put by the oil cooler... took 2 years to solve the problem till we finally got service guy down who actually new something about the masseys to go... ummm wheres the fan kit on this thing... problem solved lol, hope some of this helps