Case Study: Kubota GR2100 Hydrostatic Gearbox Repair

A Complete Rebuild That Restores Smooth, Reliable Drive

At Farm and Fleet Services, we know that a machine that won't move is a machine that can't earn its keep. As the trusted machinery specialists for Cornwall and West Devon, we take real pride in prompt response, honest diagnosis and repairs built to last. This job was a fine example of that approach in action — and here's how we got a hardworking Kubota GR2100 driving beautifully once more.

The Problem

The customer got in touch to report a fault that stops work dead: a complete loss of drive. There are few things more frustrating than a machine that simply refuses to move when there's a job to be done — and a drive fault is rarely something that puts itself right. Left unchecked, it can lead to further damage and unwelcome downtime at the worst possible moment. Understanding just how much rests on a dependable machine, our team set to work getting straight to the root of it.

The Diagnosis

There's no substitute for a proper hands-on inspection. Rather than guessing at the cause, our engineer worked through the machine methodically to pinpoint exactly what was going on.

The picture soon began to emerge: the gearbox and hydrostatic unit were running low on oil. A hydrostatic drive relies on that oil to transmit power — starve it, and the drive fails. But we didn't stop at the symptom. Tracing the leak back to its source, we found the real culprit: a bearing on the input shaft had failed, and that failure had opened the way for the oil to escape. A careful, step-by-step check meant we identified not just the fault but the reason behind it — with no unnecessary work and no shortcuts.

The Solution

With the cause confirmed, our team carried out a thorough, no-shortcuts repair:

• Removed the gearbox from the machine to gain full, clear access to the internal components
• Stripped it down completely for a proper inspection — where we found the bearings had broken up entirely and damaged the seal in the process
• Replaced the seals and the bearings on both ends of the input shaft to rebuild the unit correctly and prevent any repeat of the leak
• Reassembled the gearbox, refitted it to the machine and checked everything was running exactly as it should

A fault like this demands more than a quick top-up of oil. Simply refilling the unit without addressing the failed bearing and damaged seal would have seen the very same problem return in short order. By renewing the bearings on both ends of the shaft and fitting fresh seals, we tackled the root cause head-on — sparing the customer the frustration and expense of a repeat repair down the line.

The Result

The Kubota GR2100 was returned to work driving perfectly once more, with the loss of drive resolved completely and the leak sealed for good. Just as importantly, the customer left with complete confidence that the job had been done properly, first time — no return trips to the workshop and no lingering doubts out in the field.

Why Professional Servicing Pays

A loss of drive can seem like a daunting fault, but the real skill lies in tracing it back to its true cause rather than treating the obvious symptom. A quick refill might have got the machine moving for a day or two, but the underlying bearing failure would soon have brought it to a halt again — and likely done further damage in the meantime. There's genuine value in trusting your machinery to people who know it inside out, who strip a unit down to find the real problem, and who rebuild it properly for the long haul.

Our careful, do-it-properly approach meant we found not just the fault but the reason behind it, fitted only what was needed and had our customer back to work with minimal delay. That's the difference a thorough repair makes — a machine you can rely on, and complete peace of mind out on the job.

If your mower, tractor or machinery isn't running as it should, the Farm and Fleet Services team is here to help. From prompt diagnosis to quality repairs you can rely on right across Cornwall and West Devon, we'll keep you working — and keep you moving.