Used KUBOTA Hydraulics

Used Kubota Hydraulic Valve: KX080-4 and U36-4

The hydraulic valve is the central component that distributes oil flow to each actuator of your mini excavator: boom, arm, bucket, travel and dozer blade. On the Kubota KX080-4 and U36-4, it incorporates proportional spools allowing precise movement control and simultaneous management of several functions.

A failing valve is identified by jerky or imprecise movements despite correct circuit pressure, uncontrolled drift of a cylinder, or excessive heat at the valve block outlet. At Codimatra, our used Kubota hydraulic valves are pressure and leak-tested before stocking. Find our available references directly in the catalog on this page, or contact our team to check compatibility with your exact model.

Used Hydraulic Pump for Kubota Mini Excavator

The main hydraulic pump is the heart of the system: it generates the flow and pressure that power all the machine’s actuators. On Kubota mini excavators, it is generally a variable displacement axial piston pump, capable of reaching up to 350 bar peak pressure.

Its failure is easy to identify: unlike a faulty valve or cylinder that only affects a single movement, a pump losing performance degrades all machine functions simultaneously. Overall slowness, unusual noises at start-up, or excessive oil temperature rise are characteristic signs.

Codimatra offers used Kubota main hydraulic pumps for KX080-4 and U36-4 models, coming from dismantled machines in our yard and bench-tested before sale. Check available stock on this page or submit a request if your model is not yet listed.

Kubota Hydraulic Cylinder: When to Service?

The hydraulic cylinders of your Kubota mini excavator — boom, arm and bucket cylinders — undergo significant mechanical stress: constant pressure, repeated cycles, exposure to mud and shocks. Wear is inevitable but gradual, with clear warning signs.

Signs of a Kubota cylinder needing replacement:

• Slow or uncontrolled lowering of an arm under load (internal seal leak)
• Visible oil leakage on rod or cylinder body
• Mechanical play at the end of stroke
• Loss of power on an isolated movement despite good pump and valve condition

Choosing a tested used Kubota hydraulic cylinder is the most economical solution for a machine whose residual value does not justify a new genuine part. Our cylinders are carefully dismantled, inspected, and tested before entering our stock.

Kubota Hydraulic Issues and Troubleshooting: Diagnosing Before Ordering

An accurate diagnosis is key to effective repair — and a correct order. Here are the most common hydraulic faults on Kubota mini excavators and their probable causes:

Our technical team is available by phone at +33 (0)5 18 23 21 34 to help refine your diagnosis before ordering — and avoid replacing multiple parts when only one is faulty.

Kubota Mini Excavator Hydraulic Circuit: Understanding Components to Replace Them Better

Understanding how your Kubota's hydraulic system works helps target the faulty part and anticipate related repairs.

The Kubota mini excavator hydraulic circuit operates in a closed loop: the main pump draws oil from the hydraulic tank and pressurizes it. The flow then passes through the main valve, directing it to different actuators based on operator commands — boom, arm and bucket cylinders on one side, travel motor reducers on the other. The swing motor also receives this flow to turn the turret. Finally, the oil returns to the tank through filters and the oil cooler to be cooled before a new cycle.

The rotary joint ensures hydraulic continuity between the fixed part (undercarriage) and the rotating part (turret), with no leaks regardless of machine orientation.

Each component of this circuit is available used at Codimatra for models KX080-4, U36-4, and KX161.

All Kubota Parts Available at Codimatra

Hydraulics are just part of our Kubota catalog. Find all used parts for your mini excavators on the dedicated Kubota parts page — over 17,000 references in stock covering engine, undercarriage, cabin, bodywork, and transmission.

For hydraulic parts of other earthmoving equipment brands, consult our all brands hydraulic catalog, including:

• Hydraulic pumps for all brands
• Hydraulic valves for all brands
• Used Caterpillar hydraulics

Looking for a complete used Kubota mini excavator? Check out our selection of used tracked mini excavators, all tested and verified by our technical experts.