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M923a2 coolant in air tank

redrustyhill

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scobey montana
Anyone else have this issue? I'm assuming it's a cracked air compressor head? It's not alot of coolant but engine coolant definitely comes out when air tank valve is opened

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WillWagner

The Person You Were Warned About As A Child
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Cracked or just in need of a rebuild, the o-rings and paper gaskets get brittle. Have not seen too many crack. What engine is it? If the aftercooler leaks, the coolant can be drawn into the compressor and end up in the dryer/wet tank, remember, the compressor gets it's air from the intake manifold on the C series engine. If it is an NHC....never mind.
 

redrustyhill

Member
128
3
18
Location
scobey montana
It's the 8.3.

From my understanding coolant only flows through the head, not around the cylinder like in an engine, therefore no coolant passage between head and block for coolant to get into the cylinder?

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redrustyhill

Member
128
3
18
Location
scobey montana
I'm not familiar with the after cooler, only ever dealt with charge air coolers. I didn't realize this engine had an after cooler.

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WillWagner

The Person You Were Warned About As A Child
Super Moderator
Steel Soldiers Supporter
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Location
Monrovia, Ca.
Yes, coolant only in the head. Take the inlet pipe off from the cylinder head to compressor. If no coolant, it is just the compressor. If an aftercooler leaks coolant usually, 8 of 10 times, migrates to the rear cylinders due to drive angle an hydraulics the engine, if the leak is bad enough.
 
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