Diff Question

brandon07 · Dec 31, 2005

Yesterday I was bush hogging some real thick stuff with my new 990 for about 2 hr's I only stopped I think 4 times and wouldn't have did that but needed to clean off the grille. So after I got finished I had to drive past a creek so I dipped up some water and just washed some of the sticks and leaves and such off the tractor with some cold creek water and when I dumped it on the rear diff around that area I noticed steam, so then I felt the rear diff and it was pretty hot. So my question is, is it supposed to get that hot? It was about 70 degree's outside we are having some really strange weather for this time of the year. I checked the fluid level and it was fine. Can someone help me understand why it was so hot?
Thanks
Brandon

5030 · Dec 31, 2005

My Massey 1085 gets hot as does my M9000 Kubota. Actually, 30 degrees above ambient temperature is allright. The difference between flywheel horsepower and PTO horsepower has to go somewhere. It becomes heat derived through friction between moving assemblies and the oil carries the heat throughout your gearcase and that's what you feel or see as steam.

When the paint starts to blister.....you have a problem /forums/images/graemlins/grin.gif

brandon07 · Dec 31, 2005

Thanks

checkers · Jan 1, 2006

Brandon,
I wouldn't worry about the diff being hot. I have aimost 2000 hrs on a 4610 and I frequently wash it off as I do a lot of fertilizing and the diff always steams when the water hits it.