Dieseltech

Well-known Member
Location
Akron, Indiana
Neighbor has a Kawasaki Mule that the cooling fan wants to run all the time, and ended up running the battery down as he is hard of hearing. With the machine cold, the fan started running again shortly after the charger was placed on the battery. Any idea where to start looking? Thanks in advance..
 
Yuuuupppp. Find anything screwed into the cooling system somewhere and unplug a wire. You should find it pretty quickly. Most of the time it is near the radiator or thermostat housing. Just pull some wires off.:)
 
Start with the wire going to fan then trace it back to radiator or follow radiator hose back to engine.
 
On my mule 2500 the temperature switch for the far was in the top tank of the radiator. I would suspect this to be the issue. They are some what tempermental and troublesome cooling system and had a tendency to airbound the radiators with any minor leak since the tubes go under the floor and the radiator is the high point, air goes in and doesn't come out, and being the switch is at the top it's the first thing to not be submerged, then they overheat. Many people wired the fan to come on with the keyswitch and run continuously, so if it is a vehicle he recently acquired might be worth seeing if someone messed with the wiring in the past. But if it just recently started doing this I would head after the switch first
 

diesel mules have two radiators with a switch on each radiator... I ordered an aftermarket switch, and it did just that... got a factory switch and it worked fine. As others have said... bad about air locking and manual shows two different ways to purge the air out of the system.
 

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