I have a Kubota B2320 HSD that I purchased in December 2014. I have been searching how to change the hydrostatic/transmission fluid and I have not been able to find anything showing how to perform this service. My tractor just hit the 50-hour mark and I decided to complete this service myself. As I did this, I documented what I did. Hopefully this will help someone else.
The front gear fluid can be drained through two drain plugs. One drain plug is on the left hand side facing the front of the tractor near the front wheel. I found it easier to drain by removing the left wheel.
The plug on the right side is near the right front wheel, facing the rear of the tractor. I also found it easier to drain by removing right wheel.
After draining all the fluid, I added 3 quarts and 8 ounces of 80W-90 gear oil to get it to the recommended level.
The manual shows that the B2320 has two drain plugs for the motor oil, which is wrong. There is only one drain plug. This drain plug is on the right side of the tractor, just above the crossbeam. It is easier to use a ratchet with an extension and remove the drain plug through the crossbeam hole. As the oil drains, it will make a mess as it gets all over the cross beam. After draining the oil, I added 3 quarts and 8 ounces of motor oil, which raised it to the recommended level.
The manual shows three drain plugs for the hydraulic/transmission fluid but there are four drain plugs. The two drain plugs on the rear axle that the manual shows are incorrect.
Following are the four drain plugs.
First one is near the PTO underneath the tractor. Photo 1.
Second drain plug is on the right rear axle. Photo 2.
Third is on the left rear axle. Photo 3.
The fourth drain plug is on the front of the tractor near the crossbeam. It is on the left side of the tractor. Photo 4.
By removing these four drain plugs, I was able to drain about 3 and ¾ gallons of fluid. I am assuming this because this is about the same amount of hydraulic/transmission fluid that I added to show the recommended level on the dipstick.
The front gear fluid can be drained through two drain plugs. One drain plug is on the left hand side facing the front of the tractor near the front wheel. I found it easier to drain by removing the left wheel.
The plug on the right side is near the right front wheel, facing the rear of the tractor. I also found it easier to drain by removing right wheel.
After draining all the fluid, I added 3 quarts and 8 ounces of 80W-90 gear oil to get it to the recommended level.
The manual shows that the B2320 has two drain plugs for the motor oil, which is wrong. There is only one drain plug. This drain plug is on the right side of the tractor, just above the crossbeam. It is easier to use a ratchet with an extension and remove the drain plug through the crossbeam hole. As the oil drains, it will make a mess as it gets all over the cross beam. After draining the oil, I added 3 quarts and 8 ounces of motor oil, which raised it to the recommended level.
The manual shows three drain plugs for the hydraulic/transmission fluid but there are four drain plugs. The two drain plugs on the rear axle that the manual shows are incorrect.
Following are the four drain plugs.
First one is near the PTO underneath the tractor. Photo 1.
Second drain plug is on the right rear axle. Photo 2.
Third is on the left rear axle. Photo 3.
The fourth drain plug is on the front of the tractor near the crossbeam. It is on the left side of the tractor. Photo 4.
By removing these four drain plugs, I was able to drain about 3 and ¾ gallons of fluid. I am assuming this because this is about the same amount of hydraulic/transmission fluid that I added to show the recommended level on the dipstick.
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