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Yes I had disconnected the solenoid trigger wire from the solenoid. Actually the first thing I did was to disconnect that wire and test for voltage (the voltage that would be reaching the solenoid) when I turned the key to "start". At first that voltage was ~3v and climbed a bit, and after...

Received the new voltage regulator. Before installing, I did the above continuity tests on it. Result: The brand new regulator also had no continuity between any of the wire combinations that were supposed to have continuity according to the above chart. Plugged it in on the tractor and...

Yeah, this drop in voltage from 12v-->1.2 when I turn the key to start (i.e. create a kind of load) *even measured at terminal B ("battery") makes me think possibly the problem is not in the switch at all, but maybe something upstream. According to this diagram (if I understand it correctly)...

Well I got a can of CRC and did the spraying into ignition switch, working the key back and forth, blowing out the CRC. Repeated this process 4-5 times. At first, the solvent coming out on my glove was pretty dirty. However after this cleaning, problem persists. In fact (strangely), the only...

Actually I was also thinking to take apart the ignition switch body and clean it out, but I can't see any screws or other fasteners. Maybe the metal part of the body (with the lock tumblers etc) is threaded onto the plastic part (with the electrical connections)? Anybody know how to disassemble...

Dirty internal contacts seems very plausible. I just cleaned all the external terminals and each wire ring connector with steel wool till they're bright metal. Put wires back on, and here's what I got (photo--voltages shown in red) 3-4V makes no sense, unless something inside is not making good...

My 186D has for some years had this thing where when I turn the key sometimes I'll just hear the solenoid click but the starter doesn't engage, but if I try the key again 1-3 times it would always eventually engage the starter and the engine would start. Kind of an annoyance but it would...

Epilogue: I had also been having another annoying issue for months; my attachments on the 3pt hitch were tending to sink down while in use. I'd presumed that it must have been a bad o-ring on the 3pt cylinder (which to my knowledge hadn't ever been replaced since new). So I had bought an...

Like Winston said, it just worked its way loose over the years. Never would have thought that would happen when i installed that plug years ago. Well, I torqued it down good this time. For benefit of others who may read this thread later, here's info on what this plug does:

Case closed. Thanks for all the input guys!

Thanks guys for the input. Here are some photos The blue and green taped hoses are on the output side of the hydraulic joystick valve; The blue one goes to the transmission/sump, and green goes to return/input on the divider block The hose without tape on port at the bottom of the joystick is...

After finally getting time to revisit this problem, I did as Harry suggested and got a pressure gauge, and installed it on an extra input port of the loader joystick controller (as instructed by Eric from Brand Hydraulics, the maker of the controller). Eric told me that if my hydraulic system...

7 hoses. I didnt try that test yet, but I did notice that that fluid did start to come out of the tank hose (low pressure return to the transmission) when i moved the joystick to any position, which it is supposed to do according to the manuf. I also then tried removing each of the 4 channel...

I do have quick connects, that was the first thing I checked. Also verified they were not the problem by unscrewing the fittings they were attached to while leaving them connected together, and fluid did flow through them. There is a valve that can be shut off to block flow to the power beyond...

Hi Peter, Thanks for your reply, The spools in the controller don't have O-rings, they're just a close-tolerance metal-to-metal fit. There is an O-ring(s) in the pressure relief valve assembly (according to the manufacturer) but seems like the fact that there's no fluid coming out of the...

Hi Peter

I've got a Koyker 80 loader on my YM186D, and have been using the loader for at least 6yr with no problems. Recently had a fluid leak on one of the loader hose connectors on the power beyond block (at rear of tractor near seat), and the hydraulic fluid got low, loader was a bit sluggish/jerky...

Never been that fond of the "tunnel-mounted" powershift selector lever/gate system on my early 186d, and had been toying with the idea of trying to get the parts from a later-style model to move the powershift up to the dash location. But after seeing a diagram and the relative complexity of...

Just recently picked up a Koyker 80 loader for my 186D, (from a heads up posted on here http://www.tractorbynet.com/forums/yanmar/377988-loader-sale.html#post4741706 (Thanks Winston!) I've read and heard numerous examples of breaking small tractors in half at the bell housing while using a...

Ran across this interesting Yanmar truck YANMAR DEISEL 8X8 MINI DUMP Maybe somebody here could use it?

I'm in the market for new tires (R1 tread) for my 186d. Have a Firestone store in town but they don't handle tractor tires, nor does the TSC have the type or size i need (9.5 x16 rear and 6 x 12 front). So seems like they'll have to come from the internet. Was looking at "Carlisle Farm...

Odd thing just happened-- one of my kids who was studying at the table around dusk suddenly looked out the window into the yard and said "WHOA-- a horse just went by the window!" All of a sudden there were two horses and riders-- going all around the house, in the front yard, back yard, another...

I'm starting to look into putting a hydraulic accessory connection/valve onto my YM-186D (probably for a hydraulic toplink initially). I have basically no experience with hydraulic systems, but am ready to learn. Saw the webpage from Hoye (Remote hydraulic install on a Yanmar) about doing...

I'm looking at designing a loader for a machine with 64hp. Don't know the pump capacity, but it should be quite high. It has a number of 12.5gpm valves (8 of them) already on it (if i use 2 of those valves rather than adding a separate loader control). I'd like the loader to be able to handle...

Been trying to cut some shallow drainage trenches with a box blade on my 186d, by dropping one side of the 3pt hitch way down. The box blade is then angled so it cuts only on one end. It works "sort of", but not very efficiently since the box blade won't bite in very deep and can't take on...