Kubota Regeneration Problems and Their Possible Solutions

Kubota boast powerful motors and an easy-to-use transmission, although some customers have voiced concerns about Kubota regeneration issues. Numerous customers said that the tractor unexpectedly stopped operating in the midst of a busy route.

This was mostly brought on by a problem with the regeneration system or DPF. It keeps failing even after several repairs. Short-distance driving on a regular basis is another important factor. And it is absurd!

In this article, I’ve listed issues’ causes and their solutions. Without further ado, let’s start.

Kubota Regeneration Problems and Fixes

The process of regeneration involves oxidizing the built-up soot from a filter. Your Kubota tractor could be equipped with an after-treatment system that consists of a diesel oxidation catalyst (DOC) and diesel particle filter to meet environmental laws (DPF)

When your tractor is moving down the road, a regular process called an active regeneration cycle happens. As the DPF is being cleaned or being monitored by a computer sensor, the driver is alerted by a dashboard indication light.

Regeneration issues with Kubota tractors have been discovered to be rather typical. Because to recurrent regeneration issues, a large portion of its consumers switched from Kubota to other brands.

The filter on your tractor has to be changed often to avoid blockages and engine seizing.

There are two distinct regeneration problems: one is passive regeneration and another one is active regeneration.

Passive Regeneration

Passive regeneration is a technique for oxidizing particulate matter in the diesel particulate filter (DPF). The passive regeneration procedure is simple, and because it only needs a few parts, it is portable and easy to install.

On run time, this kind of regeneration takes place. When your tractor achieves high temperatures while operating, it is built in such a manner that it instantly burns all soot particles inside the filter.

An important point to keep in mind in this situation is that an engine only experiences high temperatures while traveling at a fast speed.

When the engine is running at a temperature greater than 350 degrees Celsius, passive regeneration takes place, which burns off the stored soot while the tractor is moving.

Normally, you must exceed the speed restriction of 60 to 70 km/h, but with Kubota tractors, this speed is seldom attained.

Active Regeneration

To get over the drawbacks of passive regeneration, Kubota makers developed the active regeneration technology. The pressure sensors in the DPF can detect soot loading if the duty cycle does not generate high enough exhaust temperatures. Therefore, active regeneration is needed.

The soot in this procedure burns when it reaches around 40% to 45% of the filter because of the higher engine temperature that results from the soot accumulation. This feature was included since, in the majority of situations, tractor drivers are unable to exceed the speed restriction necessary for passive regeneration due to their excessive workload.

Active vs Passive Regeneration: The Differences

Passive regeneration is a self-cleaning technique that doesn’t require any involvement from the operator.

Active exhaust filter cleaning may be essential if there is too much soot.

The tractor should ideally be run in a location that over time generates the least quantity of soot. The amount of cleaning that must be done may be decreased as a result. Additionally, operators should be aware that a high engine load maintains the engine clean.

Applications of PTO also lessen how often things need to be cleaned. In the end, low engine load and high RPMs speed up soot accumulation inside Kubota machinery. Operators should be ready for active regeneration in any application.

Frequent Causes of Issues with Regeneration

The two most frequent causes of issues with regeneration. Among them are:

Sensor failure

Regeneration issues may be brought on by sensor failure, which instructs the engine to begin active or passive regeneration. This is because when a sensor fails, the regeneration process’ continuous cycle ceases, which might result in an engine seizure.

Short drives

Short drives are another factor that may contribute to this issue. Long-term short-distance drives might be concerning since the engine is unable to finish the regeneration process in this situation.

Dirty DPF

You can experience issues if you don’t check your DPF. Your filter’s lifespan might be shortened and damaged by ash accumulation. Never forget to schedule cleanings or follow the suggested maintenance plan.

Insufficient oil

The engine may have insufficient oil, which is another potential cause of this issue. It’s because the regeneration process won’t begin until you top off the oil in the engine if the amount is less than a fourth of its maximum capacity

The Solutions:

There are certain things we can do to prevent the regeneration problem. Listed below are a few of them:

  • If your filters are clogged, you can apply cleaning chemicals.
  • To physically remove all debris, go to the tractor maintenance facility.
  • Cleanup of the DPF is essential. It is more challenging to remove the soot and ash the longer you put off cleaning. You may extend the DPF’s usable life by keeping it clean on a regular basis.
  • It only requires adding a certain amount of oil to the engine. Utilizing high-quality oil is essential to prolonging the engine’s lifespan. Because of this, you should check the quality of the oil you’re using; if not, you might want to consider switching.
  • The filter may ultimately become clogged with ash residue after a significant number of regens, necessitating replacement or expert cleaning.

What Majority of the Users Feel?

Unfortunately, many Kubota tractors owners report that occasionally the regeneration indicator does not turn off and instead continues to flash even though it is technically meant to do so after your tractor begins the regeneration process.

Regular regeneration is risky since it often results in increased fuel consumption and heating problems with surrounding components.

People who use Kubota are frustrated by its regeneration issues. The majority of them complained about the DPF being clogged. Even if they swap out the DPF with a new one, the problem remains.

Some of them try to manually clean the DPF by removing it, but it still becomes clogged. And the manual cleaning is tough also.

Frequently Asked Questions

How long does it take to clean the Kubota diesel particulate filter?

Your engine load affects how this method works. Usually, regeneration takes 20 minutes or less. Often, Kubota equipment operation can continue throughout this reconditioning period.

How much time does it take a Kubota to regenerate?

It normally takes around 20 minutes to regenerate. Frequently, Kubota equipment operation is unaffected by this reconditioning period.

How Does DPF Reconditioning Work?

Burning away the buildup of soot from the DPF is referred to as regeneration. Here, Kubota consumers have choices. The option of automated regeneration is available. The reconditioning may also be postponed until the equipment is outside and away from flammable materials.

Final Thoughts

As a conclusion to today’s topic, I must concur that several forums claim the Kubota tractor might have regeneration issues. But I should point to you that it’s a pretty highly regarded tractor.

Regular DFP upkeep and cleaning might temporarily reduce your issue. I’m sorry to say, but this is not the ultimate solution.

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