<html><head></head><body><div class="ydp36c87472yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div><div dir="ltr" data-setdir="false">When it rains, it pours!</div><div><br></div><div class="ydp36c87472signature">Dean VP</div></div>
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On Wednesday, February 18, 2026 at 02:32:37 PM MST, Dean Vinson <dean@vinsonfarm.net> wrote:
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<div><div id="ydp3b54174dyiv2653549398"><div><div class="ydp3b54174dyiv2653549398WordSection1"><p class="ydp3b54174dyiv2653549398MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;">Unseasonably warm today, so I tinkered with the 3600 some more and ran a new wire from the warning light all the way to the sender. I didn’t remove the original wire, just left it in place and tucked the ends out of the way. The internet had conveniently provided me with a part number (Standard Motor Products #S-2292) for the little terminal clip that connects to the lug on the tip of the oil pressure sender, so that piece is new also. Couple of heat-shrink butt splice connectors, some plastic split-loom tubing, electrical tape, automotive wire, and maybe 30 minutes of tinkering and I was done. Works fine and should hopefully be trouble-free for a very long time. </span></p><p class="ydp3b54174dyiv2653549398MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span></p><p class="ydp3b54174dyiv2653549398MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;">But of course, of course, now some new problem has popped up: The charging system idiot light no longer comes on when the key is in the “Run” position but the engine isn’t yet started. It’s always worked in the past, but when I went to test my newly-installed wiring the oil pressure light came on just fine but nothing at all happened with the charging system light. The alternator is only inches away from the oil pressure sender, and the original wiring for both the charging system and oil pressure lights is bundled in the same harness, so I assume I bumped that harness today in just the wrong way to aggravate some existing flaw in the charging light wire. Guess I’ll be running another new wire pretty soon. :)</span></p><p class="ydp3b54174dyiv2653549398MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span></p><p class="ydp3b54174dyiv2653549398MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;">Dean Vinson</span></p><p class="ydp3b54174dyiv2653549398MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;">Saint Paris, Ohio</span></p><p class="ydp3b54174dyiv2653549398MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span></p><p class="ydp3b54174dyiv2653549398MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span></p><div id="ydp3b54174dyiv2653549398yqt10604" class="ydp3b54174dyiv2653549398yqt9922345220"><div><div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in;"><p class="ydp3b54174dyiv2653549398MsoNormal"><b><span style="font-size:11.0pt;font-family:sans-serif;">From:</span></b><span style="font-size:11.0pt;font-family:sans-serif;"> AT <at-bounces@lists.antique-tractor.com> <b>On Behalf Of </b>Dean Vinson<br clear="none"><b>Sent:</b> Wednesday, February 11, 2026 11:13 AM<br clear="none"><b>To:</b> 'Antique Tractor Email Discussion Group' <at@lists.antique-tractor.com><br clear="none"><b>Subject:</b> Re: [AT] Ford 3600 oil pressure warning light</span></p></div></div><p class="ydp3b54174dyiv2653549398MsoNormal"> </p><p class="ydp3b54174dyiv2653549398MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;">Thanks, Dean, I agree. As I think about it it’d be pretty straightforward to just run a new wire all the way from the sender to the idiot light, and disconnect and abandon-in-place the original one. Cheap insurance against the risk of the existing wire being damaged in one or more locations that allow it to short to ground if it gets pushed a certain way or vibrates a certain way. I may give that a try.</span></p><p class="ydp3b54174dyiv2653549398MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span></p><p class="ydp3b54174dyiv2653549398MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;">Dean Vinson</span></p><p class="ydp3b54174dyiv2653549398MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;">Saint Paris, Ohio</span></p><p class="ydp3b54174dyiv2653549398MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span></p><p class="ydp3b54174dyiv2653549398MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span></p><div><div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in;"><p class="ydp3b54174dyiv2653549398MsoNormal"><b><span style="font-size:11.0pt;font-family:sans-serif;">From:</span></b><span style="font-size:11.0pt;font-family:sans-serif;"> AT <<a shape="rect" href="mailto:at-bounces@lists.antique-tractor.com" rel="nofollow" target="_blank">at-bounces@lists.antique-tractor.com</a>> <b>On Behalf Of </b>Dean VP<br clear="none"><b>Sent:</b> Tuesday, February 10, 2026 6:30 PM<br clear="none"><b>To:</b> Antique Tractor Email Discussion Group <<a shape="rect" href="mailto:at@lists.antique-tractor.com" rel="nofollow" target="_blank">at@lists.antique-tractor.com</a>><br clear="none"><b>Subject:</b> Re: [AT] Ford 3600 oil pressure warning light</span></p></div></div><p class="ydp3b54174dyiv2653549398MsoNormal"> </p><div><div><div><p class="ydp3b54174dyiv2653549398MsoNormal"><span style="font-size:10.0pt;font-family:sans-serif;">Dean,</span></p></div><div><p class="ydp3b54174dyiv2653549398MsoNormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span></p></div><div><p class="ydp3b54174dyiv2653549398MsoNormal"><span style="font-size:10.0pt;font-family:sans-serif;">The worst kind of problem. Those that go away but you don't know why. If you have my kind of luck it will come back as far away from home as possible and during a job that you really have to get done right now. But..... until it comes back ..... But if you do find some tine I would do that continuity check on the oil pressure sensor wire while wiggling it, etc. If there are crimped connectors at each end of the that is where I would look first.</span></p></div><div><p class="ydp3b54174dyiv2653549398MsoNormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span></p></div><div><p class="ydp3b54174dyiv2653549398MsoNormal"><span style="font-size:10.0pt;font-family:sans-serif;">Dean VP</span></p></div></div><div><p class="ydp3b54174dyiv2653549398MsoNormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span></p></div><div><p class="ydp3b54174dyiv2653549398MsoNormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span></p></div><div id="ydp3b54174dyiv2653549398ydp3be9d084yahoo_quoted_1425040765"><div><div><p class="ydp3b54174dyiv2653549398MsoNormal"><span style="font-size:10.0pt;font-family:sans-serif;">On Tuesday, February 10, 2026 at 03:38:09 PM MST, Dean Vinson <<a shape="rect" href="mailto:dean@vinsonfarm.net" rel="nofollow" target="_blank">dean@vinsonfarm.net</a>> wrote: </span></p></div><div><p class="ydp3b54174dyiv2653549398MsoNormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span></p></div><div><p class="ydp3b54174dyiv2653549398MsoNormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span></p></div><div><div id="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039"><div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">50°F today, which feels downright tropical after the very cold temperatures of the past several weeks, so I tinkered with the Ford 3600 for a while. Bottom line is that the oil pressure warning light now functions correctly and the problem was a wiring fault somewhere, although I’m not completely certain where.</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">I took Jim Becker’s suggestion about using an analog rather than digital meter to test the oil pressure sender, and the sender works fine: 12 volts between tip of the sender and the + terminal on the battery when the engine is off, 0 volts when the engine is running. So okay, pressure and sender both seem good, must be wiring.</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">I pulled the instrument cluster out and fiddled with the wiring but didn’t see anything wrong up there close to the instrument cluster. A lot (not all) of the rest of the wiring harness is easily accessible by opening the hood and swinging the battery tray out of the way, and I did find and fix one wire that had a little nick through the insulation in one spot—but its location and direction didn’t seem right for it to be wire from the oil pressure sender. I wish I’d thought to do a continuity test to confirm one way or another, which would have been easy when I had it apart to fix the damaged spot.</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">But anyway, after I put everything back together and started the tractor up the oil pressure light now functions as expected: Comes on when the key is first turned to the “run” position, goes off once the engine starts, and stays off regardless of engine RPM. Perhaps the problem was the wire I fixed, or perhaps there’s some other fault in the harness somewhere that was “fixed” just by getting jiggled around…in which case it’s not really fixed and may come back around in the future. Time will tell, but for now I’m happy to not worry about it.</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">Dean Vinson</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">Saint Paris, Ohio</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in;"><div id="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039yqtfd19308"><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><b><span style="font-size:11.0pt;font-family:sans-serif;">From:</span></b><span style="font-size:11.0pt;font-family:sans-serif;"> AT <<a shape="rect" href="mailto:at-bounces@lists.antique-tractor.com" rel="nofollow" target="_blank">at-bounces@lists.antique-tractor.com</a>> <b>On Behalf Of </b>Jim Becker<br clear="none"><b>Sent:</b> Tuesday, January 27, 2026 5:51 PM<br clear="none"><b>To:</b> Antique Tractor Email Discussion Group <<a shape="rect" href="mailto:at@lists.antique-tractor.com" rel="nofollow" target="_blank">at@lists.antique-tractor.com</a>><br clear="none"><b>Subject:</b> Re: [AT] One of those days</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div></div><div id="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039yqtfd58564"><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span></p><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:10.0pt;font-family:sans-serif;">Possible wire pinched by throttle linkage. Try unhooking the wire from the sender, switch on, engine not running. See if you can blink the light by moving the throttle control. Also, erratic meter reading when the engine is running could be from electrical interference caused by the ignition or charging systems, Any cheap digital meter is messed up by the interference. You can minimize or avoid the problem with an analog meter or an expensive (at least 3 digits!) digital meter. </span></p></div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span></p><div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:10.0pt;font-family:sans-serif;">On Sun, Jan 25, 2026 at 2:04</span><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;">PM Dean Vinson <<a shape="rect" href="mailto:dean@vinsonfarm.net" rel="nofollow" target="_blank">dean@vinsonfarm.net</a>> wrote:</span></p></div><blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt;"><div><div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">Stuart, thanks, those ideas make sense to me too. If the weather warms up before the shop technician makes it out here I might tinker with it some more and try those other electrical tests.</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">Dean, I guess anything’s possible but I can’t see how that sensor could get accidentally hit… it’s really tucked in between the power steering reservoir and the oil filter. If I was trying to hit it with something I’d have to work hard at it. I’m guessing the timing of its failure was just a coincidence.</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">Snowstorm here is winding down, looks as if we’ll end up with maybe 8” on the ground. Folks we know who live only an hour or so south measured 13” in their yard, so I can’t complain. I got the green tractor out this morning and gave the driveway an initial plowing, so it won’t be so bad tomorrow after the snow stops falling.</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">Dean Vinson</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">Saint Paris, Ohio</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><div><div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in;"><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><b><span style="font-size:11.0pt;font-family:sans-serif;">From:</span></b><span style="font-size:11.0pt;font-family:sans-serif;"> AT <<a shape="rect" href="mailto:at-bounces@lists.antique-tractor.com" rel="nofollow" target="_blank">at-bounces@lists.antique-tractor.com</a>> <b>On Behalf Of </b>Dean VP<br clear="none"><b>Sent:</b> Saturday, January 24, 2026 5:10 PM<br clear="none"><b>To:</b> Antique Tractor Email Discussion Group <<a shape="rect" href="mailto:at@lists.antique-tractor.com" rel="nofollow" target="_blank">at@lists.antique-tractor.com</a>><br clear="none"><b>Subject:</b> Re: [AT] One of those days</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div></div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span></p><div><div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:10.0pt;font-family:sans-serif;">The internally leaking sensor makes a lot of sense to me. Doesn't leak at low pressure but does at higher pressure, Why this happened after the tractor was in the shop??? The sensor getting damaged by something hitting it in the shop? Radiator fluid contamination?</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:10.0pt;font-family:sans-serif;">Dean VP</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div id="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m_2357730190299946972ydpe69913yahoo_quoted_9525021841"><div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:10.0pt;font-family:sans-serif;">On Saturday, January 24, 2026 at 01:29:52 PM MST, Stuart Harner <<a shape="rect" href="mailto:stuart@harnerfarm.net" rel="nofollow" target="_blank">stuart@harnerfarm.net</a>> wrote: </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><div id="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m_2357730190299946972ydpe69913yiv4704547404"><div><p style="margin-bottom:12.0pt;" class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:10.0pt;font-family:sans-serif;">Dean, <br clear="none"><br clear="none">A couple of things come to mind. <br clear="none"><br clear="none">The switch may be leaking internally and an oil film my be messing with the connectivity of the switch. Adding resistance where there should be none.<br clear="none"><br clear="none">Some piece of debris has entered the switch diaphragm and is causing erratic behavior. <br clear="none"><br clear="none">In either case, switch replacement may be the only answer.<br clear="none"><br clear="none">One other thing to check is continuity between the base of the switch and the negative battery post. A corroded or otherwise compromised connection somewhere in the circuit could be showing up as fluctuating voltage.<br clear="none"><br clear="none">If possible put a voltmeter or amp meter between the battery post and the negative cable and monitor the circuit at that location. If that is steady while running. I think the switch is your culprit.<br clear="none"><br clear="none">Best of luck,<br clear="none"><br clear="none">Stay warm and dry if possible.</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><div id="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m_2357730190299946972ydpe69913yiv4704547404yqt65512"><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039msonormal"><span style="font-size:10.0pt;font-family:sans-serif;">On 1/24/26 13:30, Dean Vinson wrote:</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div></div></div><div id="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m_2357730190299946972ydpe69913yiv4704547404yqt75891"><div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">Thank you, gentlemen. It certainly seems logical that the issue is more likely to be the sensor or the wiring rather than an actual pressure failure. I’m still not seeing an obvious explanation for what would make the problem suddenly pop up in between when the guys at the repair shop had the tractor running and when they dropped it off, but I guess that’s less important than fixing it.</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">I talked with the shop again and they plan to send a technician here to my place to check it out. Might be a while before they get me back on the schedule but I told them I won’t need to use it for anything during the winter anyway.</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">In the meantime I did tinker with it a little more, trying to test the sender by disconnecting the idiot light wire and then using a multimeter to check for voltage between the tip of the sensor and the positive terminal on the battery. With the engine off I got 12.57 volts, which made sense: No pressure, switch closed, positive-to-ground circuit complete. With the engine running I couldn’t get any kind of consistent reading—the meter reading just fluctuated wildly all over the place no matter how carefully and steadily I held the test prongs. I’m not certain how to interpret that, but I guess if the switch were simply open there’d be current flow and no voltage at all (i.e., idiot light “off”) so I’m taking it as an indication of a sensor failure.</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msoplaintext"><span style="font-size:10.0pt;font-family:sans-serif;">It’s kind of hard to get a good look at the sending unit, much less get a hand on it, because it’s slightly behind the power steering pump. Wrenching on an oily hunk of metal to get that pump out of my way, in 10°F weather, is not terribly high on my list of fun things to do so for now at least my plan is to let it sit and wait for the repair shop guy to get here.</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msoplaintext"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msoplaintext"><span style="font-size:10.0pt;font-family:sans-serif;">Lots of snow coming shortly, by all accounts, so that’ll keep me occupied for a while anyway. Spencer, I’m guessing you might be in the ice/freezing rain path? One of my brothers lives north of Atlanta and is tracking that risk.</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msoplaintext"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msoplaintext"><span style="font-size:10.0pt;font-family:sans-serif;">Dean Vinson</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msoplaintext"><span style="font-size:10.0pt;font-family:sans-serif;">Saint Paris, Ohio</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><div><div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in;"><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><b><span style="font-size:11.0pt;font-family:sans-serif;">From:</span></b><span style="font-size:11.0pt;font-family:sans-serif;"> AT <a shape="rect" href="mailto:at-bounces@lists.antique-tractor.com" rel="nofollow" target="_blank"><at-bounces@lists.antique-tractor.com></a> <b>On Behalf Of </b>Spencer Yost<br clear="none"><b>Sent:</b> Friday, January 23, 2026 8:59 AM<br clear="none"><b>To:</b> <a shape="rect" href="mailto:at@lists.antique-tractor.com" rel="nofollow" target="_blank">at@lists.antique-tractor.com</a><br clear="none"><b>Subject:</b> Re: [AT] One of those days</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div></div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:10.0pt;font-family:sans-serif;">I’ve had a few oil pressure sending units fail. Granted, they typically were full failures and didn’t work at idle either, but I could see how the failure mode might be vibration induced.</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:10.0pt;font-family:sans-serif;">I’d get a super cheapie oil pressure gauge at the auto parts store, or this:</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><div><table border="0" cellspacing="0" cellpadding="0" width="228" style="width:171.0pt;background:#5C5B66;border-collapse:collapse;" class="ydp3b54174dyiv2653549398MsoNormalTable"><tbody><tr><td colspan="1" rowspan="1" style="padding:0in 0in 0in 0in;"></td></tr><tr><td colspan="1" rowspan="1" style="padding:0in 0in 0in 0in;"><table border="0" cellspacing="0" cellpadding="0" width="228" style="width:171.0pt;background:#5C5B66;" class="ydp3b54174dyiv2653549398MsoNormalTable"><tbody><tr><td colspan="1" rowspan="1" style="padding:6.0pt 0in 6.0pt 0in;"><div style="margin-left:12.0pt;margin-right:12.0pt;max-width:100%;"><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:9.0pt;font-family:sans-serif;color:black;"><a shape="rect" href="https://www.harborfreight.com/engine-oil-pressure-test-kit-62621.html?hftm_sc=&hftm_source=google&utm_source=google&utm_medium=cpc&utm_campaign=21901271210&campaignid=21901271210&utm_content=171677806502&adsetid=171677806502&product=62621&gad_source=1&gad_campaignid=21901271210&gbraid=0AAAAADAHb4eil-ADMAET3vLnfQyDpklM-" rel="nofollow" target="_blank"><span style="color:white;text-decoration:none;">Engine Oil Pressure Test Kit</span></a></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:8.5pt;font-family:sans-serif;color:black;"><a shape="rect" href="https://www.harborfreight.com/engine-oil-pressure-test-kit-62621.html?hftm_sc=&hftm_source=google&utm_source=google&utm_medium=cpc&utm_campaign=21901271210&campaignid=21901271210&utm_content=171677806502&adsetid=171677806502&product=62621&gad_source=1&gad_campaignid=21901271210&gbraid=0AAAAADAHb4eil-ADMAET3vLnfQyDpklM-" rel="nofollow" target="_blank"><span style="color:white;text-decoration:none;">harborfreight.com</span></a></span></p></div></td></tr></tbody></table></td></tr></tbody></table></div></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:10.0pt;font-family:sans-serif;">remove the sensor, and then hook it up to confirm if you have a real problem.</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:10.0pt;font-family:sans-serif;">Spencer Yost</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><div><p style="margin-bottom:12.0pt;" class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><blockquote style="margin-top:5.0pt;margin-bottom:5.0pt;"><p style="margin-bottom:12.0pt;" class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:10.0pt;font-family:sans-serif;">On Jan 22, 2026, at 10:44 PM, Dean VP <<a shape="rect" href="mailto:deanvp@att.net" rel="nofollow" target="_blank">deanvp@att.net</a>> wrote:</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></blockquote></div><blockquote style="margin-top:5.0pt;margin-bottom:5.0pt;"><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"></span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><div><div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:10.0pt;font-family:sans-serif;">Dean,</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:10.0pt;font-family:sans-serif;">My guess would be a faulty sensor or a loose wire shorting out somewhere due to the vibration of the running engine. I sincerely doubt you have an oil pressure issue. Check everything around areas where your shop may have worked. I think they damaged or disturbed something while working on the other stuff. Is there any wiring that they could have disturbed? </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:10.0pt;font-family:sans-serif;">Dean VP</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div id="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m_2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yahoo_quoted_9153108013"><div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:10.0pt;font-family:sans-serif;">On Thursday, January 22, 2026 at 08:19:55 PM MST, Dean Vinson <<a shape="rect" href="mailto:dean@vinsonfarm.net" rel="nofollow" target="_blank">dean@vinsonfarm.net</a>> wrote: </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><div id="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m_2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905"><div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">Dean, ah, I see now how my sale of the 620 is coming back to haunt me. :) </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">On the plus side for green tractors, my 3020 runs like a top and is standing by in the barn with the rear blade attached, ready for the snowplow duty that per the weather forecast looks mighty likely in the coming few days. Moving 8 or 10 inches of snow with a rear blade is not ideal but it beats relying on my scoop shovel.</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msoplaintext"><span style="font-size:10.0pt;font-family:sans-serif;">(Speaking of not ideal, the high temperature for the day after the snowstorm is currently forecasted to be 7°F and of course the 3020 is an open-station tractor. “Cab by Carhartt,” as the saying goes.) </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">The oil pressure warning light issue on the Ford 3600 does concern me a little. The idiot light comes on when the key is turned on but prior to starting the engine, exactly as it should to demonstrate that the circuit is intact and the bulb works, then goes off once the tractor starts and oil pressure builds enough to open the pressure sensor switch. The only surprising part is that the light comes back *<b>on</b>* when I throttle up. One possibility is that there is a glitch causing a “false positive” warning light even though oil pressure is fine. The other is that the sensor and wiring are functioning exactly as intended and oil pressure is for some reason dropping.</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">Today I added about a third of a quart of oil to bring it up to the “Full” line on the dipstick, and I removed, inspected, reconnected, and fiddled with the idiot light wire where it clips onto the oil pressure sensor just to make sure it felt secure. Neither of those actions stopped the warning light from coming on as soon as I throttle up past idle, but it seemed worthwhile to try them just in case.</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">The repair shop hasn’t called me back yet, so I’ll follow up with them tomorrow. The timing of this issue—literally popping up in the first few seconds after they brought the tractor back to me after working on it—makes me wonder if something they did somehow caused this, maybe by aggravating an existing problem enough to push it from “this is going to fail soon” to “this has failed.” But maybe it’s just a coincidence. Either way, I can’t use the tractor with the oil pressure warning light on.</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">Dean Vinson</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">Saint Paris, Ohio</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><div id="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m_2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905yqt62570"><div><div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in;"><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><b><span style="font-size:11.0pt;font-family:sans-serif;">From:</span></b><span style="font-size:11.0pt;font-family:sans-serif;"> AT <<a shape="rect" href="mailto:at-bounces@lists.antique-tractor.com" rel="nofollow" target="_blank">at-bounces@lists.antique-tractor.com</a>> <b>On Behalf Of </b>Dean VP<br clear="none"><b>Sent:</b> Thursday, January 22, 2026 2:36 AM<br clear="none"><b>To:</b> Antique Tractor Email Discussion Group <<a shape="rect" href="mailto:at@lists.antique-tractor.com" rel="nofollow" target="_blank">at@lists.antique-tractor.com</a>><br clear="none"><b>Subject:</b> Re: [AT] One of those days</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div></div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><div><div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:10.0pt;font-family:sans-serif;">Dean,</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:10.0pt;font-family:sans-serif;">I've had all too many days like that. it can be exasperating. As I get older, they seem to come more often. Lost items can usually be better described as misplaced items. Absent minded excellence. I'm really good at that. But in your case, it is all because you sold the JD 620. If you had sold the M you would only have had 5 nuts to contend with rather than three, but the advantage is missing one out of 5 is not nearly as serious as one out of three. But eventually you will see the light! :-) </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:10.0pt;font-family:sans-serif;">But I will admit I have never had the light sequence you are experiencing. Probably because JD did not use idiot lights on the two-cylinder tractors. But it is exactly opposite of what one might expect. Is it possible that with your multiple tractors you have forgotten how this one is supposed to work? I don't recall any piece of machinery that that has worked like that except my JD 750 Compact Tractor. It has a light on the dash that turns on when the key is turned on and stays that way and is not dependent on RPMs. Since I too have multiple tractors and this is the only tractor that works this way, it has more than once caused me to stop and question what is wrong. Then I realize this is the way this one works. </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:10.0pt;font-family:sans-serif;">I cannot think of an oil pressure sensor could possibly fail backwards. This will be interesting when you find out what is going on.</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:10.0pt;font-family:sans-serif;">The other Dean in AZ</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:10.0pt;font-family:sans-serif;">Dean VP</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div id="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m_2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905ydpcd80734fyahoo_quoted_9638964519"><div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:10.0pt;font-family:sans-serif;">On Wednesday, January 21, 2026 at 04:53:43 PM MST, Dean Vinson <<a shape="rect" href="mailto:dean@vinsonfarm.net" rel="nofollow" target="_blank">dean@vinsonfarm.net</a>> wrote: </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905msonormal"><span style="font-size:10.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p></div><div><div id="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m_2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905ydpcd80734fyiv8063073656"><div><div><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905ydpcd80734fyiv8063073656msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">Minor tinkering today with my Farmall Super M, chainsaws, and Ford 3600. Nothing quite went as expected.</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905ydpcd80734fyiv8063073656msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905ydpcd80734fyiv8063073656msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">This morning I went into town to pick up the Super M’s right front wheel, which a local tire shop had finished pulling thorns out of and putting a new tube into. When I got home I went to put it back on the tractor, which is sitting by itself on the (relatively) clean concrete floor in the far corner of my enclosed shop. Got the rim in place and went to bolt it back on, only to discover I was short by one nut. Neat little pile of hardware on the floor right where I’d left it, three bolts, three lock washers, but for some reason only two nuts. Couple of wrenches nearby but nothing else, no junk, no random stacks of supplies or half-full jugs of engine oil, nothing to camouflage the presence of the missing nut. (My shop is not exactly short of any of those things, but they’re all over on the other side near the workbench where I spent most of my time, not here where the tractor’s been sitting.) I got down low and looked, picked up the wrenches and put them back down, checked under the other front wheel, checked the area, nothing. Big dang nut for a 5/8” bolt just disappeared. Scratched my head for a minute but soon enough gave up and went back into town to visit the local hardware store for another nut. Problem solved, tractor is now all back together.</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905ydpcd80734fyiv8063073656msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905ydpcd80734fyiv8063073656msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">Next task was to clean up my two chainsaws and figure out why one of them wouldn’t start last time I tried to use it. I take both with me when I’m clearing osage orange and honeysuckle from the old overgrown pasture. The newer saw cuts clean wood, and the older saw with a no-longer-fresh-but-still-halfway-okay chain cuts stumps down low and serves as the backup in case I get the other one pinched. Last time I went out I absolutely could not get the #2 saw to start, but it’s been an egregiously long time since I cleaned (much less replaced) the air filter. So today I got the saw all cleaned up, and also cleaned up the other one while I was at it, but didn’t see anything that looked bad enough to keep the saw from running. Scratched my head for a while and then finally thought to check the fuel tank, which of course turned out to be bone dry. Last time I went out I must have somehow forgotten to fuel that one up. This was mildly funny to me today, but it had not seemed so last week when I was out there in the woods yanking endlessly on that starter rope and scaring away wildlife with a loud string of curses.</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905ydpcd80734fyiv8063073656msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905ydpcd80734fyiv8063073656msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">Last task was to take delivery of my Ford 3600, which for several weeks had been at a local shop for an overheating problem. The shop’s diagnosis, as written on the completed service order, was that the “coolant was nasty and radiator was almost plugged.” They removed the radiator, sent it out to get cleaned, then put it all back together, function checked it, and brought it back to me late this afternoon. After their driver started it up and idled it backwards down off his tilt-bed truck, I went to put it in the barn…and as soon as I throttled it up past idle, the oil pressure light came on. I tried throttling down again and then back up, and shutting the tractor off then restarting, but same thing every time: Charging system and oil pressure lights come on when key is turned to the “run” position, then both go off when the tractor starts, but the oil pressure light comes back on at anything above a moderate idle and goes back off upon returning to idle speed. I checked the oil level and it’s about halfway between “Full” and “Add” on the dipstick, so I wouldn’t expect it to just be an oil level issue. Their driver hadn’t left yet so he called his service manager and gave him the rundown, but by then it was nearly five o’clock so the plan is they’ll call me in the morning and figure out the next step. I won’t need the tractor for anything until springtime, but still, dagnabbit it I was looking forward to having them all back home and in one piece today. :)</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905ydpcd80734fyiv8063073656msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905ydpcd80734fyiv8063073656msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">Oh, and of course, as I walked back through the shop to close up the doors and turn the lights off, I stumbled across that missing nut about 15 or 20 feet from where the Super M is parked. Maybe I somehow kicked it over there without realizing I’d done so, or maybe a cat had been entertaining itself, who knows. But now I have an extra 5/8” 11-pitch nut in a shop drawer, in case I ever need one.</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905ydpcd80734fyiv8063073656msonormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905ydpcd80734fyiv8063073656msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">Dean Vinson</span><span style="font-size:10.0pt;font-family:sans-serif;"></span></p><p class="ydp3b54174dyiv2653549398ydp3be9d084yiv9447979039m2357730190299946972ydpe69913yiv4704547404ydpe2f2d0b6yiv5888147905ydpcd80734fyiv8063073656msonormal"><span style="font-size:11.0pt;font-family:sans-serif;">Saint Paris, Ohio</span><span 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