Has any one found, modified, or tried to use a electric inline water pump to boost the cooling capicity of their radiator. Please tell me more, or any additional suggestions.
Hi Smokeye,Okay - I'm seven miles from "Tropis of Cancer" it is hot in summer and this old tractor comes without water pump. Hate to work it in loose sand, overheat it and crack head. Water pump and temperature gauge seams like cheap "preventative insurance"!
Thanks, Smokeys
Not necessarily! My B7100 has no water pump and simply relies on natural thermal circulation to move the water through the block and radiator. I'm not familiar with the L series but even if it is using thermal circulation with a clean radiator you shouldn't overheat! I use an infrared thermometer available just about anywhere these days for under $50. After I've worked the tractor and before I put it away I use the thermometer to check the temp of the radiator tank and if it is around 200 degrees I know the cooling system is working like it should if it is beginning to approach 215 I know that the radiator screen needs cleaning! I've heard of some adding a automotive temp sensor with an idiot light to let them know the temp is getting warm, but it requires a fitting to be soldered into the radiator tank! Hope this is helpful!Hi Smokeye,
I know that the diesel engines, like any water cooled, will have a circulation pump. So there is already one on the tractor.
WOW! I actually find that very interesting, what a trip. Sort of like sweating copper plumbing the entire time the engines running. At least you have one less componant to failNot necessarily! My B7100 has no water pump and simply relies on natural thermal circulation to move the water through the block and radiator.
John
Unless you know you are overheating it should be cooling fine. Yours does not have a water pump and as stated before relies on convective circulation. This is a self regulating system that is why you will find it does not need a thermostat either. It is really a niffty trouble free system. Your only MUST DO is to keep the radiator clean.Has any one found, modified, or tried to use a electric inline water pump to boost the cooling capicity of their radiator. Please tell me more, or any additional suggestions.
All right everybody, I'm no person to start any junk, trust me. Like the saying goes: "Start no shit there'll be no shit".
But for the heck of it I googled Kubota L175 water pump and this link will sell one for $78.96. Is this a fluke or did some of them actually come with circulation pumps. I honestly don't know.
Scott
Yes that is very decieving. Thes engine built with no pump were from the 70's and I think later models have a pump which is what is for sale. Just my speculation, I don't know for sure.![]()
Once you got a look at the engine manual for a Z750 engine the whole story would be there.
There is really a lot of specifics that these type of cooling systems have to meet to properly work. Radiator must rise well above the engine cooling system, the bottom of the radiator must be below the bottom of the cooling jackets. The temp rise in the water causes the movement upward so that the "perculating" water rises through the water neck and "falls" down on the water level in the radiator. All this coupled with the pressure in the system and heat is effectively dissipated out of the engine. Where most of the trouble in these systems start is that these are designed to work with water only and the water is constantly evaporating off so the level is a constant maintenance item.
I was thinking about this post today and I have a picture to show the water movement without the pump.Thank you for going into detail on the engine. That helped clear it up for me. Very strange cooling system, but it works.
Scott
Thanks Aquaforce, above and beyond! Those pictures really sum it up. So when you look under the hood and see the big riser it's pretty much a sign there is no pump.I was thinking about this post today and I have a picture to show the water movement without the pump.
The diagonal cover on the front of this engine is the water passage where the cold water comes from the bottom of the radiator. At the top of this diagonal there is a tube that runs straight through the front cover to the block. As water is pushed down in the radiator the cold water is pushed into the top of the block right at the base of the cylinder head. The bearing mount above this passage is where the water pump on other models is located but on this Z750 that is only the fan mount bearing.
The water neck on the front of the cylinder head is where the heated water pushes up into the radiator and falls down on the water level which in turn circulates the water in this system.
The other picture shows the fan mounted with no water pump.
This should give a good visual of the system.![]()