I have searched that area with no luck. This is the 5 cylinder engine made in mid 90s.Generally the temperature sensor is located very close to the thermostat housing. This will be at the top of the engine block adjacent to the radiator hose.
Unlike many other engines, on the M4700 it is about as far away from the thermostat as possible. The thermostat is where you’d expect it at the top/front of the head at the upper radiator hose…but the temp sending unit is at the top/rear of the head on the right side. (and to add frustration for anyone not familiar with this 5-cyl engine, …. the WSM never addresses the sending unit at all…not even in the Cooling System Troubleshooting section.Generally the temperature sensor is located very close to the thermostat housing. This will be at the top of the engine block adjacent to the radiator hose.
Thanks I will remove the cluster and take a look. I am fighting with the steering wheel now. It is really stuck. I just bought this tractor the fuel gauge also stuck at 1/4. It would be nice if it worked but I can live with out it.On the M4700 is is on top of the head, at the extreme Right / REAR of the engine. Look just above the fuel filter bowl.
Unlike many other engines, on the M4700 it is about as far away from the thermostat as possible. The thermostat is where you’d expect it at the top/front of the head at the upper radiator hose…but the temp sending unit is at the top/rear of the head on the right side. (and to add frustration for anyone not familiar with this 5-cyl engine, …. the WSM never addresses the sending unit at all…not even in the Cooling System Troubleshooting section.
When I bought mine it was demonstrated that “everything works”…but that was a deception by the second owner who was selling it to me. We ran the engine and operated all the hydraulics, etc…. but after maybe only 15 minutes of operation it didn’t seem problematic that the temp indicator still rested on Cold.
The tractor only had 390 hrs on it (good thing the tachometer/odometer is a common mechanical-drive speedometer-cable type or that would have been suspicious). The paint and cleanliness and tire-wear all matched what one would expect from a low-hour tractor so that wasn’t an issue.
It was only after I’d owned it a week and run it for several hours plowing that it became obvious the gauge didn’t work at all. Mice had eaten the wiring and when I opened up the Instrument cluster it was obvious some ignorant amateur had managed to get the tractor running to sell it…but had either disabled, removed, or skipped a lot of wiring they didn’t understand and had cobbled together a wad of wire and electrical tape and quick-clip connectors …instead of properly repairing the mouse-damage.
Fortunately the people up at Messicks are fine and helpful folks and they emailed a PDF schematic to me and I was able to remove all the spaghetti-wiring the deceptive seller had done…. and I repaired it properly with aircraft wire and connectors. This is how I found the temp-sending-unit and repaired the connection between the temp gauge and the sender (and few other things also). It’s been a very good and reliable workhorse tractor ever since.
Do you have a schematic for your machine? I think many Kubotas share a voltage regulator in the gauge cluster between the fuel and temperature gauges. Since both of your gauges are malfunctioning, maybe there's a connection (no pun intended).Thanks I will remove the cluster and take a look. I am fighting with the steering wheel now. It is really stuck. I just bought this tractor the fuel gauge also stuck at 1/4. It would be nice if it worked but I can live with out it.
That steering wheel can be a booger…. There’s actually a special tool shaped like a small horseshoe to slip beneath the hub so you can use a wheel-puller to grab the horseshoe instead of the plastic steering wheel. (I didn’t do this…but You can make your own) I used a 3-arm gear puller and by loosening the steering wheel center nut toward the top of the threads I could smack the gear-puller-nut with a hammer while taking a strain on the steering wheel…and it “popped” loose. (THere’s really no good reason to tighten these steering wheels down so tightly. Use some anti-seize and just barely snug the steering wheel nut down when you re-install it.Thanks I will remove the cluster and take a look. I am fighting with the steering wheel now. It is really stuck. I just bought this tractor the fuel gauge also stuck at 1/4. It would be nice if it worked but I can live with out it.
Thanks I got it off will make the horse shoe next time.That steering wheel can be a booger…. There’s actually a special tool shaped like a small horseshoe to slip beneath the hub so you can use a wheel-puller to grab the horseshoe instead of the plastic steering wheel. (I didn’t do this…but You can make your own) I used a 3-arm gear puller and by loosening the steering wheel center nut toward the top of the threads I could smack the gear-puller-nut with a hammer while taking a strain on the steering wheel…and it “popped” loose. (THere’s really no good reason to tighten these steering wheels down so tightly. Use some anti-seize and just barely snug the steering wheel nut down when you re-install it. View attachment 69661
Thanks I will check that first.Do you have a schematic for your machine? I think many Kubotas share a voltage regulator in the gauge cluster between the fuel and temperature gauges. Since both of your gauges are malfunctioning, maybe there's a connection (no pun intended).