2012 trans 4010 diesel cooling system trouble

[rockzilla]

Hello everyone,

My name is Rocky, I'm new to this forum and I have a 2012 Kawasaki Mule 4010 trans diesel. I just recently got this machine. And I love it. I worked and drove an older gas mule before and never ran into this problem...

Not long into the first ride the coolant light came on. I ran it a little longer and it continue to stay on. So I started reading about it and took a look at the cooling system. The supply and return line are long as hell and I assumed there was air in them. Well after many hours and gallons of coolant, it still comes on... I have tried parking on a hill, warming it up, I lifted the front end up with tl my overhead winch. Using the breather screw etc. It'll stay off and the fan will kick on when I'm driving up hill, but when I start descending... The light comes on and the fan won't work.

If anyone has any ideas, steps to a proper burping, or anything else I'd greatly appreciate it. Also just to be sure I got a new radiator cap, thermostat, and temperature sensor coming in.

Thanks

[KAWMECH]

Diesel mules are an SOB to burp out. It can take up to 45 minutes to truly burp one out. #2, The diesel mule hates to get overheated. If, as you say, you kept driving agter the light came on, then I would go ahead and plan on replacing head gasket. 9 out 10 diesel mules that come to our shop that have been driven after the light came on, we find the head gasket craked.