[AT] IH 656

[Mike M]

I would second what Bill said, I like the hack saw idea, and if you go
low and slow, you may be able to save the threads. I have a couple of
old screw drivers that I heated and bent the end to a U shaped hook for
things like this. You could reach through, and keep outward pressure on
the section you are working on, so it comes out in the right direction.

Good Luck!
Mike M

On 7/20/2022 12:25 PM, Bill Brueck wrote:
>
> Drilling and tapping sounds reasonable. What’s on the inside at this
> point?  If it’s another fitting for an oil line to feed the sending
> unit, be careful you don’t dig too far.
>
> Another approach would be to split a hack saw blade lengthwise so you
> can get it into the opening and relieve the broken brass at 2, maybe 4
> points.  Then run the brass thru a couple of heat/cool cycles gently
> with propane. I expect then you could then chip out the pieces.  I
> keep a couple of broken screw drivers shafts, sharpened to a point to
> one side, just for projects like this.
>
> For the debris removal, since this is a pressurized opening, just
> start the engine up with the hole open.  It’ll make a mess but it
> should clean things out.
>
> B²
>
> Bill Brueck
>
>    Pine Island, MN USA
>
> *From:* AT <at-bounces at lists.antique-tractor.com> *On Behalf Of
> *Gunnells, Brad R
> *Sent:* Wednesday, July 20, 2022 9:28 AM
> *To:* Antique tractor email discussion group
> <at at lists.antique-tractor.com>
> *Subject:* [AT] IH 656
>
> Ok, seems we need a little tractor talk here (but I wish I weren’t
> asking this!).
>
> My dad went to replace the oil pressure sending unit on his IH 656.
> The sending unit was fitted into a brass elbow that screwed into the
> block. When he put the wrench on the sending unit it broke the elbow.
> So…here we are. We presumed that being brass it shouldn’t weld itself
> to the block and should just spin out with an easy out. Wrong! That
> little bastard is stuck in there good! Feeling a twist in the easy-out
> we didn’t want to risk breaking it off in there and compound the
> problem. We thought about using heat on the block as you would a steel
> bolt, but given the proximity we didn’t want to get things hot and
> cause a leak in the nearby gasket for what I presume is the timing
> gear cover.
>
> Being brass we thought maybe we could take a sharpened punch and cut
> through and break the remaining part out of the block. While we got
> some of it, it didn’t really do what we’d hoped. I think we’re down to
> trying to drill it out. But I’m not fond of this idea as it’s an oil
> passage and any metal in there could be disastrous.
>
> I figured I’d throw this out to the group and see if there’s anything
> we could/should do different? If we do indeed go the drill route we’d
> probably dip the bit in some grease to try and get any shavings to
> cling to the bit and remove it frequently to clean it off. Hopefully
> avoiding metal shavings inside. Then prior to installing the new
> pressure switch crank the tractor for a moment and let it push some
> engine oil out of the block hopefully flushing any debris.
>
> Am I overlooking anything, or other options? I’ll also attempt to add
> a picture.
>
> Thanks for any suggestions
> Brad
>
>
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