1572 over heating

[greasemonkoid]

I don't get it - doesn't kubota use british threads? British 1/8 bpt is very close to 1/8 npt. Pressurize the cooling sytem with air if the part can't be removed to blow chips back outside and simply run a tap down the existing bpt hole. You'll be removing very little material. Most electric sending units for temp are the same profile as the stock kubota unit - dimensionally. Just use good thread sealer and good to go.

[J-Mech]

Originally Posted by greasemonkoid

You should almost be able to hold on to the upper radiator hose continuously at normal operating temps.

Sure you can. With gloves on.

[Oak]

Originally Posted by darkminion_17

Oak,
The one I have off a 2182 and is different than yours. Didja switch over the outlet for the upper radiator hose and drill/tap the little stub sticking out on an angle?

Ya know Lew, I don't remember. I'll have to dig through some pics.

[greasemonkoid]

Originally Posted by J-Mech

Sure you can. With gloves on.

I've been told there were no nerves in my hands, common practice here.

[J-Mech]

Originally Posted by greasemonkoid

I've been told there were no nerves in my hands, common practice here.

Then don't suggest it to "normal" people....
You shouldn't be able to touch a 180 deg hose.

[drcjv]

Originally Posted by J-Mech

Then don't suggest it to "normal" people....
You shouldn't be able to touch a 180 deg hose.

Jonathan it is an understatement to say that you and I rarely see eye to eye, but I totally agree that on this subject you are way more qualified than I am. So if the temp of the hose is around 160 is the tractor truly overheating? Also Everyone has suggested a new gauge which is great and I have looked at the autometer gauges. The problem is short of doing what Oak did how do I thread the sender in. How do I adapt for the different threads ?

[J-Mech]

Originally Posted by drcjv

Jonathan it is an understatement to say that you and I rarely see eye to eye, but I totally agree that on this subject you are way more qualified than I am. So if the temp of the hose is around 160 is the tractor truly overheating? Also Everyone has suggested a new gauge which is great and I have looked at the autometer gauges. The problem is short of doing what Oak did how do I thread the sender in. How do I adapt for the different threads ?

No, it's not overheating from the temp gun numbers you gave in your first post. I'd say your gauge, or the sending unit has failed.

Where Oak mounted his sending unit is the absolute best place. You want the sending unit either in the cylinder head, or behind the thermostat near where the circulation bypass is. It must be on the engine side of the thermostat.

Kubota uses BPT (British Pipe) threads. I have never seen an adapter, but as mentioned they are close to NPT thread, just enough different to be an issue. I would use a tap and just tap it to a NPT thread. Only other option is to drill and tap the "neck" in the same place Oaks sending unit is and mount it there. Not a bad deal, and may be easier than tapping the threads in the head. If you have never tapped aluminum, go slow. Aluminum isn't fun to tap. Pull the tap out often and clean it. Go about 1/4 turn or so, then back it up past the burr. (You will feel it.) Then go forward again. Pull it out at least every revolution. If you tap the head, you can drain the coolant and put a shop vac set to blow on the radiator cap (neck). It will keep air moving through the system and blow the metal out as you tap. Lower pressure and more volume than using compressed air.

I would strongly suggest a mechanical temp gauge. Electric ones are fine, but mechanical tend to be more accurate unless you spend several dollars (Like $100) on a good gauge and sending unit. Issue will be is if there is enough room for the temp probe. You may have to go with an electric temp sender/gauge.

[Dart1917]

Adapters-

https://www.mcmaster.com/#bspt-to-np...pters/=19m1zp8

That didn't work quite right. Click on the second row third over to get to the adapters.

[Dirty Steve]

I drilled and tapped this one in my 2182. It seems to work well.

[drcjv]

Jonathon, Dart and Steve thank you for the info. I'm not sure what I will do yet but I think this will be a winter project.