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 IC DT 530 Surge Tank Overflowing
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mrpicky
Senior Member

123 Posts

Posted - 12/09/2016 :  11:27:11 AM  Show Profile  Visit mrpicky's Homepage  Reply with Quote
Hello all, the school has an 04 IC DT530 RE300 with a problem. The driver reports no heat and an overflowing surge tank. We replaced the water pump, t-stat, various hoses and belts several months ago. Also, just got an oil sample back and the sample says that there is coolant in the oil. We replaced the o-rings on the sleeves 6 years ago except for the #6 cylinder (too hard to get at.) There is no overheating, the temp gauge stays at 210 when driving. Could combustion gases be getting through that #6 sleeve o-rings? Any advice is appreciated.

Fastback
Top Member

1500 Posts

Posted - 12/09/2016 :  12:10:23 PM  Show Profile  Reply with Quote
Probably best to pull the pan first and pressurize the cooling system and look to see if coolant in the oil is leaking from from the sleeve orings. Combustion gases in cooling system more likely from head or head gasket I would think.

Why yes, the ORIGinal CHARGER is a Fastback

Edited by - Fastback on 12/09/2016 12:11:00 PM
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g0ttadrift
Advanced Member

USA
258 Posts

Posted - 12/09/2016 :  4:49:33 PM  Show Profile  Reply with Quote
We have FE fleet and we had a problem with the air compressor building air and pressurizing the cooling system. We found this because the overflow tube would dump coolant on the ground after a few minutes of it running. We replaced the air compressor and it solved the problem. Something to think about before you do a head gasket. As far as coolant in the oil, that sounds like a head gasket.
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eddo
Advanced Member

USA
311 Posts

Posted - 12/09/2016 :  5:57:42 PM  Show Profile  Reply with Quote
Coolant in the oil of a DT totally sounds like piston liner seals gone bad- especially if #6 is the original set of seals.

My first step would be exactly what Fastback said- drop the pan and pressurize the cooling system.

Edited by - eddo on 12/09/2016 5:59:01 PM
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mrpicky
Senior Member

123 Posts

Posted - 12/12/2016 :  07:03:25 AM  Show Profile  Visit mrpicky's Homepage  Reply with Quote
Ok, thanks for the responses.
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