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CATEGORY LISTINGS > CATERPILLAR > 3406 C15 coolant in oil [ REFRESH ]
Thread Title:

3406 C15 coolant in oil


Created On Sunday December 21, 2008 08:26 Diesel Talk
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talltree
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Note Sunday December 21, 2008 08:26 View thread in raw text format
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Removed oil pan pressure tested coolant system,coolant leaking down from between piston and liner.Is this the head gasket ? Possible cracked head....
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marc7242
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Note Sunday December 21, 2008 09:28 View thread in raw text format
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It can be very difficult to tell, what would normally be done here is to pull the head, send it to a good machine shop to be properly cleaned and pressure tested, and magnafluxed. Nows also the time to have them check the valves, guides, seats, seals, etc. Closely inspect the old head gasket for any sort of tracking in the suspect area. Definatley change all liner o-rings also and depending on the miles you may want to go full overhaul. If the coolant is definately 100% coming from between the piston and liner you may have a cracked liner or counterbore in the block. There is a product you can get at welding supply stores called magnaflux spot check that is an aerosol spray system that can be used to find cracks not visible to the naked eye. If the block is cracked at the counterbore there is a salvage operation so you don't have to replace the block. Its also possible to get coolant in oil at the oil cooler (you would USUALLY also have oil in coolant-I've seen cold water leaks at the cooler o-rings allow coolant into the oil but not vice-versa) or at the water pump. Just be extremely thorough and you'll get the problem fixed. If you don't find anything definative in the inspection process, let us know.
good luck
marc
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talltree
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Note Tuesday December 23, 2008 03:29 View thread in raw text format
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Pulled head found cracks between exhaust valves at 3,4,5..time for a complete inframe,,
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marc7242
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Note Tuesday December 23, 2008 18:18 View thread in raw text format
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I see that more often than not c15s and c13s when the head comes off. It might not be a bad idea to have it pressure tested anyways, just to pinpoint the source of the coolant.
marc
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talltree
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Note Wednesday December 24, 2008 02:33 View thread in raw text format
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Not going to waste time,with the head. Got complete inframe kit,new head.. Please see my other post on the rods. I do mosts all detroits in our shop and cummins, are Cat guy took a walk .I dont blame him.
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gambino1994
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Note Monday December 29, 2008 17:30 View thread in raw text format
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I got a 3406E 998k miles. I'm goin thru the same problem coolant in oil. I'm going to pressure test tomorow hopefully. How much coolant was in your oil?? My oil analysis is the only thing telling me there is contamination. My oil was/is still jet black and there's no visible sign of oil in coolant. I'm just wonderin how much pressure i need to apply to the coolant to see a result if it is liner o-rings or head issue....
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catmech
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Note Monday December 29, 2008 23:33 View thread in raw text format
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what does your radiator pressure cap say its pressure is? go to all most that pressure and you should be ok
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gambino1994
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Note Sunday January 04, 2009 17:26 View thread in raw text format
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I put about 18psi to the radiator and I've got coolant coming down from #1 cylinder but cant see for sure since oil pump is in the way. If I decide to remove the oil pump what are the torque specs for the 3/8" bolts holding it on? Or should I assume its the #1 liner o-rings?
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CATEGORY LISTINGS > CATERPILLAR [ REFRESH ]
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SELECT Advert_Number, Banner_Name, FName, LName, CompanyName FROM Advert_Imp a LEFT OUTER JOIN Seller s ON a.Company_ID = s.SellerID WHERE Show_Advert=1 AND Size_Type=1 ORDER BY NEWID()
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SELECT Imps_Available FROM Advert_Imp WHERE Advert_Number = UPDATE Advert_Imp SET Imps_Available = #Imps_Available1# WHERE Advert_Number = SELECT Impressions FROM Advert_Imp_Trans WHERE Advert_Number = AND Month(Date)=#CurrentMonth# AND Year(Date)=#CurrentYear# UPDATE Advert_Imp_Trans SET Impressions = #Impressions1# WHERE Advert_Number = AND Month(Date)=#CurrentMonth# AND Year(Date)=#CurrentYear# INSERT INTO Advert_Imp_Trans (Advert_Number, Date, Impressions, Clicks) VALUES (#Advert_Number#, #CurrentNow#, 1, 0)
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