Brief explanation of how the radiator works
What does such a radiator of a mini tractor actually do? The engine of a mini-tractor develops heat through combustion. That heat must be dissipated to prevent overheating. This is where the radiator comes in along with the fan, water pump and Thermostat . Together they form a circuit to divert all the heat from the engine to the required operating temperature. If you notice that of your Kobota tractor the radiator is not working properly or is damaged, it is time to replace it. In this blog, we will show you how to replace your Kubota radiator quickly and get back to work.
The Water Pump and Thermostat
The water pump pumps coolant around and the thermostat controls the flow in the circuit. Full flow of the thermostat causes the temperature to drop rapidly. To get the right temperatures, for that, the Thermostat should be in good working condition so that the engine will always be around 70-80 degrees. The Thermostat does this by further closing or opening the opening to the rest of the water circuit.
The radiator shows leakage
If coolant loss occurs, it can have a number of causes;
- Including the head gasket,
- Crack in the engine (lower block)/cylinder head
- Radiator hose
- Water pump
- and finally the radiator
Since we are talking about the radiator in this blog, we will take the scenario that the radiator is broken. A radiator is a wear part that, like the water pump and other facets of the engine, are subject to wear and tear. Over time, fatigue of the material may occur causing leakage. It is also possible that corrosion or damage could cause leaks. In this case, the radiator should be replaced to prevent any future problems with overheating. Below is the process of installing the radiator and removing the old one.
Can I replace the Kubota radiator myself?
Yes, you can replace your Kubota’s radiator yourself, as long as you have the right materials and tools and follow the proper steps. Shop4trac is happy to help with the right radiator and radiator hoses
What should I do if I discover a leak after replacing the radiator?
It is often cheaper to replace the radiator rather than seal the leak at a radiator shop. Shop4trac offers most radiators for any mini tractor. If a radiator hose is leaking, simply tightening a hose clamp or replacing the hose itself can solve the problem.
Installation procedure Kubota b1400 – B1502
The process starts with the old broken radiator. Try to loosen all surrounding parts in order to unscrew the main bolts of the radiator. When doing so, note that the radiator must be pulled forward in order to remove it around the fan. Prevent damage to the fan and fan cover around the fan.
2. With Step 1 or 2, both can be started. However, the cooling water must be removed during the process. In doing so, disconnect a return hose from the lowest point and collect the water in a container. In the case of the Kubota B1400 – B1502, it is the lower radiator hose. However, this is similar to the B1600 and B1700 tractors.
3. 
After removing all the nuts and bolts, the radiator can be removed from the tractor. During process, make sure that all hoses are disconnected to avoid causing nasty damage.
4. 
Transfer the fan cover(from the left one) to the new radiator(the right one). This is a very important part. Since it provides additional cooling in the radiator. The hood provides additional pressure in the radiator like a tunnel. Without the fan cover, operation will be a lot less!
5. Reinstall the new radiator and reconnect all radiator hoses. Note that the hoses are checked for antiquity. If they show dry cracks, it is better to replace the hoses for new ones. We recommend replacing the hoses immediately while changing to avoid tedious work later.
6. Refill the cooling water to the maximum level. Make sure that the tractor is started and you keep refilling cooling water to the maximum point at the same time. Also squeeze the radiator hose to remove any air.
After this, the tractor is ready for use again. After the tractor cools down, check the cooling water level again and top up if necessary.
We look forward to seeing you in our next blog.