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Tractor Talk Discussion Forum

Air cleaner caught FIRE! New Holland 5640 diesel

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Frank Richardso

08-17-2004 10:40:08




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I do some volunteer work at a city owned farm. We have a 199? New Holland 5640 diesel. While mowing recently, smoke started coming out of the air box, when we opened it, it was on FIRE. We put the fire out. When we got the filter out, we found nothing left but the metal pieces. All the filter element and plastic had burned away. The New Holland dealer had never seen this before either. After we cleaned everything up and found no other damage, we replaced the filter with a new one from the dealer. It now has less than 12 hours on it. We pulled it out and found it is covered in black soot. The glue has oozed and burned also. What in the world is making it so hot? Stuck intake valve? Exhaust restriction? We KNOW we had someone try to sabotage the tractor recently and loosened all the wheel lugs. Fortunately no one was hurt. Could they have doen something that would cause this to happen as well?

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RickB

08-18-2004 14:37:44




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 Thermostart in reply to Frank Richardson, 08-17-2004 10:40:08  
A faulty thermostart unit could cause such a fire, I suppose. This is a heating element found in the intake manifold; used as a cold start aid. A faulty control timer for a properly functioning thermostart unit could also be the culprit.



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george shoulderdice

08-17-2004 18:25:19




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 Re: Air cleaner caught FIRE! New Holland 5640 dies in reply to Frank Richardson, 08-17-2004 10:40:08  
Stupid new hollands we bought one five years ago and we had problems ever since we bought it. we spent alot of money trying to get it going but the motor was pouched so we sold it to the scrap metal man for parts. our tractor was also a 5640 diesel. i think its a NH type of thing.



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satisfied

08-17-2004 19:13:25




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 Re: Air cleaner caught FIRE! New Holland 5640 dies in reply to george shoulderdice, 08-17-2004 18:25:19  
I have a 5640 NH and it has 6700 hrs on it and has never been in the shop i wouldn't trade for 2 john deere's the same size



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Is That SO!

08-18-2004 04:03:24




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 Re: Air cleaner caught FIRE! New Holland 5640 dies in reply to satisfied, 08-17-2004 19:13:25  
Wouldn't look to have anyone offer that trade either-



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Jon H

08-17-2004 17:18:52




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 Re: Air cleaner caught FIRE! New Holland 5640 dies in reply to Frank Richardson, 08-17-2004 10:40:08  
If the air cleaner has an aspirator that attaches to the exhaust system,you can get hot exhaust fumes flowing from the muffler to the air cleaner. The is usually caused by a defective venturi in the exhaust system(usually built into the muffler) or somthing is causing an exhaust restriction downstream from the venturi. (rain cap or bent exhaust pipe,or somthing stuffed down into the exhaust pipe.) nothing will plug a paper filter faster than diesel exhaust,and if enough of it is backfeeding into the air cleaner it certainly could melt/burn the filter element.

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TheRealRon

08-17-2004 13:51:45




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 Re: Air cleaner caught FIRE! New Holland 5640 dies in reply to Frank Richardson, 08-17-2004 10:40:08  
Soaking the filter element with carb/choke cleaner is an old trick. Better get some security before some clown drops foundry sand in the crankcase... a local contractor spent $50,000 repairing all his equipment recently.



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Leland

08-17-2004 13:19:05




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 Re: Air cleaner caught FIRE! New Holland 5640 dies in reply to Frank Richardson, 08-17-2004 10:40:08  
Would this happen to have a pre cleaner tube going into cleaner from muffler? might be your problem if you have this.



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Leland

08-17-2004 13:18:16




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 Re: Air cleaner caught FIRE! New Holland 5640 dies in reply to Frank Richardson, 08-17-2004 10:40:08  
Would this happen to have a pre cleaner tube going into cleaner from muffler? might be your problem if you have this.



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Allan in NE

08-17-2004 12:08:24




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 Re: Air cleaner caught FIRE! New Holland 5640 dies in reply to Frank Richardson, 08-17-2004 10:40:08  
Does this engine have an intake mounted EGR system gone amuck?

Allan



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paul

08-17-2004 11:31:20




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 Re: Air cleaner caught FIRE! New Holland 5640 dies in reply to Frank Richardson, 08-17-2004 10:40:08  
Very odd for a diesel. Does it have a turbo? Is some heat getting out of the exaust system and onto the air intake?

As cool air should always be flowing into the cleaner, is the cleaner funtioning? Or is there an airleak behind it, so no air is going through the cleaner, and heat builds up?

Puzzling.

--->Paul



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Frank Richardson

08-17-2004 12:39:26




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 Re: Air cleaner caught FIRE! New Holland 5640 dies in reply to paul, 08-17-2004 11:31:20  
No turbo. I"ll take a closer look as to what another heat source could possibly be.



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Russ

08-17-2004 13:59:31




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 Re: Air cleaner caught FIRE! New Holland 5640 dies in reply to Frank Richardson, 08-17-2004 12:39:26  
NH5640; Is this rig given regular maintenance"
Are all of its repair bills paid within 30 days?
How many people approach this beast with big enuf tooling to loosen the lug nuts?
Did this beast have any air intake problems before the vandalism session?
What would motivate anyone to aggravate the municipality by targeting this machine?
Does this rig get parked in a secure building?
Maybe the filtration material can be dipped in a borax solution and throughly dried to prevent combustion. The heat source has to be isolated or diverted. Good luck in your sleuthing efforts.

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