kattywumpus
Gold Member
Anyone know what the thermostat part number is for DK40SE? Is this something I can get at NAPA? No cab heat looks like the thermostat stuck open.
Replacement Thermostat for DK40SE
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k0ua
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murphy1244
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thermostat#E5800-73011 gasket#E5500-73272 Feel the top hose to see if coolant is get thru. Does the temp gauge go up?
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kattywumpus
Gold Member
Yes, the temp gauge does go up after several minutes. My guess is the engine reaches operating temperature after 20 or 30 minutes, but no hot coolant is getting to the cab heater.
k0ua
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is it possible you have an air bubble in the heater hoses?..
murphy1244
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How does one get a air bubble out of a heater hose? I've done lots of car work and have never run into this. Is this a tractor thing?
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kattywumpus
Gold Member
Anything possible. I did think of that but since the engine normally doesn't take long to reach operating temperature and its a lot easier to change the thermostat then open the cab roof I figured I try changing the thermostat first.
k0ua
Epic Contributor
I have seen several posts on this. I suppose kinda like vapor lock.. apparently it can happen. I will see what I can find.
k0ua
Epic Contributor
here is one.. it is a John Deere, but I suppose it could happen to a Kioti.. seems the air bubble gets trapped up in the heater core and stays there.
http://www.tractorbynet.com/forums/.../265483-obtaining-heat-inside-3320-cab-2.html
http://www.tractorbynet.com/forums/.../265483-obtaining-heat-inside-3320-cab-2.html
murphy1244
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Now I got it, Cause the heater core is mounted so high up the water pump must have a hard time moving it. Where as a car its like 6 inches higher than the pump. Am always learning. katty, have you been in the cooling system lately?