Is the problem the pre-coolor or something else?

I've replaced a pre-cooler in a 2007 International 9200i because apparently it got soaked in radiator fluid (See picture1.jpg). I got one on the junk yard to replace pre-cooler#1 but for some reason it did the same thing (see picture2.jpg). (notice the radiator fluid inside the pre cooler). Is radiator fluid supposed to go into this pre-cooler? Now I'm going to replace it with a new one but I'm not sure if this will do the same thing. This pre-cooler is not cheap. Cost $1500 for a new one.

 

Your original cooler is bad, and so is the one from the junk yard. You should not see coolant with a good cooler. The coolant stains means it has failed.

 

I'd replace the coolant diverter valve diaphragm with that new cooler. They had a service bulletin a while back, but I can't find it now. It was restricting coolant flow to the pre-cooler and the higher temps in the cooler could cause premature failure. It was simple, 4 screws a replace the diaphragm. They should be checked when ever you replace the pre-cooler. I think the new diaphragm has a white center, but I'm not sure, I wish I could find the bulletin.

 

never buy parts from a junk yard

 

we already installed the pre cooler and done. Does that mean re-doing it again with the diaphram?

 

get the diaphragm installed or it's going to do it again

 

You don't have to pull the cooler back off, you just have to drain the coolant and find the valve. Not sure where the diverter valve is for your arrangement, looking at the pics, yours is different than ours. It'd probably be at the other end of one of the coolant hoses going to the cooler, I'd guess. On our Pete's, it's bolted right to the cooler.

 

I found the service bulletine, it is SEBD6867. I cannot find it online, so here's a quick summery:

C11 (S/N: KCA1-UP)
C13 (S/N: KCB1-UP)
C15 (S/N: BXS1-UP; MXS1-UP; NXS1-UP)

When replacing a precooler on the serial numbers listed above, inspect the coolant diverter valve diahragm. If the diaphragm does not have a white teflon disk, replace the diaphragm using the 319-6059 Diaphragm Kit.

It also says that if a coolant sample indicates engine oil, the diverter valve should be checked.

 

Thanks, Grapeape. Looks like I'm going to be down another day to install this valve. My mechanic said to replaced the whole valve. I rather get this replaced than spend on a new pre-cooler.

 

I have a C13 cat motor and I am getting oil in the reservoir. I have already changed the oil cooler. Could this be a pre cooler issue.