OVERHEATING DESCRIPTION:
Below is a great read but, I'm going to get right to the cure. Tighten the alternator/fan belt so tight that when you turn the fan with your had, the crank pulley also turns. If the crank pulley turns a little then stops, tighten the alternator belt a little more. I have had a number of folks try this and it is working for everyone. I also change the radiator cap to a 16lb to increase the boiling point of the antifreeze to 225 degrees. Good luck and stay safe.
Im running a Kubota SVL95-2S with high-flow Battle-Ax mulching head (carbide teeth) with an external Loftness dual fan cooler, Only while running the mulcher, the machine motor temperature continually increases until "Hot" warning sounds off (code: 9114). If I let it cool to where the temperature reading is in the middle of the gage and begin mulching; it only takes an average of four minutes eleven minutes to overheat and sound the E9114 alarm. Hydraulics stay a cool 175 degrees. The coolant is running around 237 degrees.
I email a letter to Kubota Corporation for help with the over heating problem. I received no reply (shameful).
If anyone would like to talk to me about this problem, please feel free to call me at 931-292-0145 (Three Oaks Property Management).
9/7/24: On 4/25/21, my problem began when I had a vegetation mulcher cooler attached to the machine. On 9/7/24 (3 years 5 months later) some progress was finally made. A man named Aaron Barnes noted that the Kubota SVL95 cooling fan pushes a massive amount of air, so much air that the fan pulley may slip on the belt. The hotter the engine compartment gets, the more it will slip. He instructed me to tighten the fan belt tight enough so when I rotated the fan with my hand, the motor crank shaft also turned (which was very tight). I did as instructed. I mulched yesterday. It was very dusty. The Kubota did not over heat. I will keep everyone posted.
Conclusion: My overheating problem was from the dealer nor me not performing a perticular performing a task not consistently each time the machine was worked on. I have not been able to find a Kubota procedure on how to tighten fan belts.
PREVIOUS NOTES:
The below items CAN cause the SVL95 to overheat:
6/26/24: Although this did not cure my problem, I have discovered that; even after installing the protection grid over the inside of the radiator, the radiator fins continue to be flattened by debris. The flattening of the fins stops air flow which causes over heating. I have found that every 4-5 months, I have to pull the radiator and straighten the fins and clean the radiator with Nu-Brite. I also run a 50/50 mixture of antifreeze and distilled water. It has been proven that distilled water dissipates heat better than tap water.
10/3/23: Over heating is still present although it occurs sooner. I discovered that I have gotten another piece of wood caught between the fan and the radiator. The piece of wood beat the radiator fins flat. I remove the radiator to straighten fins. Kubota sells a screen that prevents this from happening ($1000.00). I made my own out of 1/2 inch live stock wire. overheating problem still occurring.
7/23/22, Bent radiator fins straightened: I completed a full 10 hours of operation and the skidsteer did NOT overheat. Even though ambient temp was +90 degrees and a massive amount of dirt dust when mulching, the temp gage did not reach the 3/4 mark. This worked for about three months, then it began over heating again. Something changed! Side note, I had taken the fan off when I removed the radiator.
7/11/22, Although this did not help, while at Kubota dealer, a mechanic noticed that the fan orientation was not correct. It was put on backwards when they installed the hydraulic cooler. The end of the fan blade has an extension or what I call a teardrop on the outer-end of the blade. please a fan blade is at 12 o'clock. The teardrop should be facing the "1:00" position NOT the "11:00" position. Note: Just because a combustion engine's fan is on backwards, does NOT mean that the fan pushes air in the opposite direction. Either way, the fan will still suck air through the engine compartment and blow air OUT of the radiator.
6/30/22: I fabricated a fan that sucks in ambient air into the engine compartment. This did NOT help one bit. I also wired my A/C fan to pull hot air out of the engine compartment instead of sucking air in. This did NOT help one bit. I also pulled the inspection panels off that are located behind the tracks. This did NOT help one bit.
5/30/22: Kubota dealer said the radiator was clogged. Used the mulched the next day, the machine overheated within the same time frame. I pulled the radiator out of the machine that evening and found 1out of every 4 of the radiator fins bent over. Humm!. All fins were straightened and the radiator was cleaner with "New-Bite" again. Operated the next day, problem was still there.
5/21/21: As suggested by the first Kubota dealer; I transported my Skid Steer to a different Kubota dealer to see if they would have any better luck resolving this problem.
Update 5/18/22: The SS went back to Kubota because it's still overheating. As requested, this time I delivered it with the mulching head on it. The tech spent most of the day testing the machine. He began by rechecked the new injectors to assure that all four were running correctly. They were.
Kubota Corp thought that the DEF Re-gen system might be clogged. They forced a re-gen and confirmed that the system was running at the correct temp and was not clogged. He operated the machine with his computer hooked to the system and sitting in his lap. Any time the mulching head was running the engine coolant temp rose significantly. Shut the head off and the temp began to lower. With this, he checked the engine and exhaust temps. He noted that the all engine and exhaust temps never increased enough to affect the coolant temp. This has lead him to believe that there could be a restriction somewhere in the hydraulic system. I'll have another update as soon as I know something. Flow test preformed, hydraulics flow as supposed to.
5/12/22: Took the machine to the Kubota dealer. On 5/2/22. motor still not throwing any codes. Motor is using 1/2 quart of oil every 300 hours. Kubota mechanic says that it normal usage. Mechanic checked port after the turbo to check for "oil burn". Turbo ports are clean with no residue.
After long deliberation, Kobota decided to send the injectors out to be tested. Three injectors were pushing too much diesel and failed the POP test.. Kubota warrantied all 4 injectors (zero cost for the repair).
***Mulched with the machine today: After 1/2 hour mulching, the machine is still overheating. Called
Kubota dealer, they said; tomorrow (5/13/22) they are going to set a conference call with Kubota to discuss the problem.
5/22/22: Kubota suggested setting the high flow settings from right side 14 left side 9 to 12-8 respectively. Machine still overheated.
5/12/22: To eliminate the hydraulic system as the problem. I jumped the fans in the Loftness hydraulic cooler that is mounted on the top of the machine. When the fans are on (all the time), the hydraulic system is running at 125 degrees, and the motor still gets hot.
Update: 4/25/22: Changed the thermostat and both belts. Machine continues to run hot while running the mulcher. The longer I use the machine the hotter it gets.
Thanks for your help
Mike
Below is a great read but, I'm going to get right to the cure. Tighten the alternator/fan belt so tight that when you turn the fan with your had, the crank pulley also turns. If the crank pulley turns a little then stops, tighten the alternator belt a little more. I have had a number of folks try this and it is working for everyone. I also change the radiator cap to a 16lb to increase the boiling point of the antifreeze to 225 degrees. Good luck and stay safe.
Im running a Kubota SVL95-2S with high-flow Battle-Ax mulching head (carbide teeth) with an external Loftness dual fan cooler, Only while running the mulcher, the machine motor temperature continually increases until "Hot" warning sounds off (code: 9114). If I let it cool to where the temperature reading is in the middle of the gage and begin mulching; it only takes an average of four minutes eleven minutes to overheat and sound the E9114 alarm. Hydraulics stay a cool 175 degrees. The coolant is running around 237 degrees.
I email a letter to Kubota Corporation for help with the over heating problem. I received no reply (shameful).
If anyone would like to talk to me about this problem, please feel free to call me at 931-292-0145 (Three Oaks Property Management).
9/7/24: On 4/25/21, my problem began when I had a vegetation mulcher cooler attached to the machine. On 9/7/24 (3 years 5 months later) some progress was finally made. A man named Aaron Barnes noted that the Kubota SVL95 cooling fan pushes a massive amount of air, so much air that the fan pulley may slip on the belt. The hotter the engine compartment gets, the more it will slip. He instructed me to tighten the fan belt tight enough so when I rotated the fan with my hand, the motor crank shaft also turned (which was very tight). I did as instructed. I mulched yesterday. It was very dusty. The Kubota did not over heat. I will keep everyone posted.
Conclusion: My overheating problem was from the dealer nor me not performing a perticular performing a task not consistently each time the machine was worked on. I have not been able to find a Kubota procedure on how to tighten fan belts.
PREVIOUS NOTES:
The below items CAN cause the SVL95 to overheat:
- Assure that the fan belt is tightened whereas, if you rotate the fan with your hand, the motor crank pulley also turns. This seems to be very tight, but this seemed to be the resolution. I also installed a 16lb radiator cap. The factory 13lb cap tend to release pressure to early causing the antifreeze reservoir to spew antifreeze. I also replaced the factory antifreeze reservoir with a 2"x10" tube type with a screw in top.
- Radiator: between the fins must be kept clean. Every three months, fins should be cleaned with a product such as Nu-Brite A/C fin cleaner. Remove the radiator, lay flat on saw horses. Spray the top side with Nu-Brite until the Nu-Brite can be seen running out of the opposite side. Be generous with the Nu-Brite. When clean, you should be able to see a small amount of light between the fins. Remember the fins are in a Zig Zag pattern so you will not see "Full" light. Check for bent fins on the engine side of the radiator.
- Motor venting clean and clear. Including the lift arm vents. Remove the door behind the tracks (four bolts. Only the top two bolt will come out all the way.
- Radiator is full of Antifreeze.
- I changed my radiator cap to a 16lb cap it increase the bolding point.
- Injectors all tested and changed (running rich). Installed new injectors.
- Clogged hydraulic fluid filters.
- Dirty Air filter.
- DEF full, only use high grade.
- Does it over heat at 3/4 or full throttle.
- Try different high flow setting right side 1-14 and left side from 1-9.
- Check temp of mulchers hydraulic hoses. I'm using mulcher with external dual fan hydraulic cooler. (Both fans running). The the ambient air is 95 degrees the hydraulic lines 127-137 max degrees.
- A/C condenser clean and full light can shine through.
- The inside of the machine is spotless with no debris in the bottom or in the lift arm cooling stacks.
- Lift arm top openings not blocked.
6/26/24: Although this did not cure my problem, I have discovered that; even after installing the protection grid over the inside of the radiator, the radiator fins continue to be flattened by debris. The flattening of the fins stops air flow which causes over heating. I have found that every 4-5 months, I have to pull the radiator and straighten the fins and clean the radiator with Nu-Brite. I also run a 50/50 mixture of antifreeze and distilled water. It has been proven that distilled water dissipates heat better than tap water.
10/3/23: Over heating is still present although it occurs sooner. I discovered that I have gotten another piece of wood caught between the fan and the radiator. The piece of wood beat the radiator fins flat. I remove the radiator to straighten fins. Kubota sells a screen that prevents this from happening ($1000.00). I made my own out of 1/2 inch live stock wire. overheating problem still occurring.
7/23/22, Bent radiator fins straightened: I completed a full 10 hours of operation and the skidsteer did NOT overheat. Even though ambient temp was +90 degrees and a massive amount of dirt dust when mulching, the temp gage did not reach the 3/4 mark. This worked for about three months, then it began over heating again. Something changed! Side note, I had taken the fan off when I removed the radiator.
7/11/22, Although this did not help, while at Kubota dealer, a mechanic noticed that the fan orientation was not correct. It was put on backwards when they installed the hydraulic cooler. The end of the fan blade has an extension or what I call a teardrop on the outer-end of the blade. please a fan blade is at 12 o'clock. The teardrop should be facing the "1:00" position NOT the "11:00" position. Note: Just because a combustion engine's fan is on backwards, does NOT mean that the fan pushes air in the opposite direction. Either way, the fan will still suck air through the engine compartment and blow air OUT of the radiator.
6/30/22: I fabricated a fan that sucks in ambient air into the engine compartment. This did NOT help one bit. I also wired my A/C fan to pull hot air out of the engine compartment instead of sucking air in. This did NOT help one bit. I also pulled the inspection panels off that are located behind the tracks. This did NOT help one bit.
5/30/22: Kubota dealer said the radiator was clogged. Used the mulched the next day, the machine overheated within the same time frame. I pulled the radiator out of the machine that evening and found 1out of every 4 of the radiator fins bent over. Humm!. All fins were straightened and the radiator was cleaner with "New-Bite" again. Operated the next day, problem was still there.
5/21/21: As suggested by the first Kubota dealer; I transported my Skid Steer to a different Kubota dealer to see if they would have any better luck resolving this problem.
Update 5/18/22: The SS went back to Kubota because it's still overheating. As requested, this time I delivered it with the mulching head on it. The tech spent most of the day testing the machine. He began by rechecked the new injectors to assure that all four were running correctly. They were.
Kubota Corp thought that the DEF Re-gen system might be clogged. They forced a re-gen and confirmed that the system was running at the correct temp and was not clogged. He operated the machine with his computer hooked to the system and sitting in his lap. Any time the mulching head was running the engine coolant temp rose significantly. Shut the head off and the temp began to lower. With this, he checked the engine and exhaust temps. He noted that the all engine and exhaust temps never increased enough to affect the coolant temp. This has lead him to believe that there could be a restriction somewhere in the hydraulic system. I'll have another update as soon as I know something. Flow test preformed, hydraulics flow as supposed to.
5/12/22: Took the machine to the Kubota dealer. On 5/2/22. motor still not throwing any codes. Motor is using 1/2 quart of oil every 300 hours. Kubota mechanic says that it normal usage. Mechanic checked port after the turbo to check for "oil burn". Turbo ports are clean with no residue.
After long deliberation, Kobota decided to send the injectors out to be tested. Three injectors were pushing too much diesel and failed the POP test.. Kubota warrantied all 4 injectors (zero cost for the repair).
***Mulched with the machine today: After 1/2 hour mulching, the machine is still overheating. Called
Kubota dealer, they said; tomorrow (5/13/22) they are going to set a conference call with Kubota to discuss the problem.
5/22/22: Kubota suggested setting the high flow settings from right side 14 left side 9 to 12-8 respectively. Machine still overheated.
5/12/22: To eliminate the hydraulic system as the problem. I jumped the fans in the Loftness hydraulic cooler that is mounted on the top of the machine. When the fans are on (all the time), the hydraulic system is running at 125 degrees, and the motor still gets hot.
Update: 4/25/22: Changed the thermostat and both belts. Machine continues to run hot while running the mulcher. The longer I use the machine the hotter it gets.
Thanks for your help
Mike
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