[AT] radiator core replacement
Louis
louis at kellnet.com
Thu Feb 17 20:32:41 PST 2005
Ken,
I agree with heating the bolts, but beware! If the bolt goes into a
blind hole, the heat build up somehow can cause the cast to break out
the bottom of the hole. If the old core is junk, I take a sawzall and
get it out of my way. I then drill a small hole through the center of
the bolt, through the entire length of the bolt. That seems to relieve
the bolt somewhat. Then heat. I am speaking from experience. Once I
started to do that the bolts seem to come out easier and haven't had a
tank crack around the bolt. If you let the bolt cool enough, you can
also put oil in through the hole. That also seems to help. I then run
a tap in all the threaded holes. Be careful with that also. I had a
tap break off in a hole of a radiator, with no warning. It didn't
creak, squeak, or anything, it was turning pretty easy and snap. That
was a job. I would heat the tap red hot with a brazing tip on my torch,
then drill on it. I would have to sharpen my bit every time. Thank
goodness for Drill Doctor. It took me about 45 minutes to get the
broken tap out, but I got it out and then helicoiled the hole. Good as
new.
Lou
-----Original Message-----
From: at-bounces at lists.antique-tractor.com
[mailto:at-bounces at lists.antique-tractor.com] On Behalf Of ken knierim
Sent: Thursday, February 17, 2005 8:46 PM
To: Antique tractor email discussion group
Subject: RE: [AT] radiator core replacement
Dean, Robert,
Thanks for the information. I was thinking it would take a lot of
4-letter lubrication to get these things apart, and it sounds like
heating them and hitting them with a detuned rattle-wrench is a good
method. Fortunately I have a parts radiator on the Case project that I
can use to learn some of the tricks without destroying anything
valuable.
Thanks again!
Ken
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