Diesel Engine Thermostat

7 comments

Rate

yaj lleb Associate Join Date: Sep 2012 Posts: 34	Diesel Engine Thermostat 02/03/2013 11:46 AM
	Good day everyone! The theremostat of my cummins nt 855 model diesel engine has a stamp 180 degrees Fahreinheit.I want to know whether this temperature is the lowest temperature that the thermostat would start to open or this is the temperature that the thermostat will open to its maximum opening?..pls give me your understanding about this matter..thanx guys!
	Register to Reply

Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

These comments received enough positive votes to make them "good answers".

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, vote them!

lyn Guru Join Date: Oct 2008 Posts: 42355 Good Answers: 1693	#1 Re: Diesel Engine Thermostat 02/03/2013 11:52 AM
	It is designed to begin opening at ABOUT 180°. It is designed to open to a point that the water circulating in the system is maintained at 180°, after the system stabilizes. Don't worry about the exact temperatures. To understand how one works, put it in a pan of water and heat it up. You'll see how they work. Or Google "How an automotive thermostat works". Never mind: How does the thermostat in a car's cooling system work? - Auto
	Register to Reply Score 1 for Good Answer

yaj lleb Associate Join Date: Sep 2012 Posts: 34	#2 In reply to #1 Re: Diesel Engine Thermostat 02/03/2013 12:17 PM
	sir thanks for the advice. in addition, the operation manual of that engine says that the when the coolant temperature reaches 115 degrees celcious the engine will automatically shut down. is it safe to continuously run the engine at temperature slightly lower than 115 deg celcious, say 113 or 110? i have already experience the temperature reaching to 105 deg celcius and i manually shut off the engine because i am afraid something bad will happen.please help..thanks.
	Register to Reply

lyn Guru Join Date: Oct 2008 Posts: 42355 Good Answers: 1693	#3 In reply to #2 Re: Diesel Engine Thermostat 02/03/2013 12:41 PM
	This is going nowhere fast. Call a service tech. Call a service tech. Call a service tech. Call a service tech. Call a service tech. If the coolant temp. is running at 240F (let's be consistent with our units) the motor will probably fail soon. Call a service tech. Call a service tech. Call a service tech. Call a service tech. Call a service tech. Does the thermostat open? Call a service tech. Do you understand the relationship between oil temp and water temp??Call a service tech. With the cooling water at 180°F what is the oil temp????Call a service tech. Call a service tech.
	Register to Reply Good Answer (Score 2)

No more Good Answers. Go to first "Almost" Good Answer

yaj lleb Associate Join Date: Sep 2012 Posts: 34	#6 In reply to #3 Re: Diesel Engine Thermostat 02/04/2013 9:26 AM
	sir good day...i have mentiond that i have experienced a temperature reaching 95 deg C. before it only reached 85 deg C. . yesterday i cleaned the radiator both the air side and coolant side. I installed my thermostat spare but the same 95 deg. C is reached. Are the oil cooler and coolant pump related to this problem? I apologize for the bother.
	Register to Reply

Guru

Join Date: Oct 2008

Posts: 42355

Good Answers: 1693

#7
In reply to #2

06/06/2016 9:08 PM

Power Engineering (since 02/21/2016)
Member Message:	New Member Power system engineer in substatio

More so when you consider this↑

Tornado Guru Join Date: May 2009 Location: Richland, WA, USA Posts: 21017 Good Answers: 795	#4 Re: Diesel Engine Thermostat 02/03/2013 3:21 PM
	If the radiator cap blows, your engine will suddenly go into ebullient cooling mode. Sorry, you'll just have to look it up. __________________ In vino veritas; in cervisia carmen; in aqua E. coli.
	Register to Reply

Fredski Guru Join Date: Feb 2011 Posts: 7025 Good Answers: 207	#5 Re: Diesel Engine Thermostat 02/03/2013 10:21 PM
	it's clode to the expected "opening" temp...with a zillion varibles
	Register to Reply