Maintaining the hydraulic system on your Kubota SVL75 skid steer is critical for reliable performance. Whether you’re preparing for fall landscaping, construction, or agricultural work, clean hydraulic fluid ensures smooth operation and protects against costly breakdowns.
The 50-hour service interval, which includes the hydraulic filter change, is the first major milestone for Kubota SVL75-2 and SVL75-3 models (2015+). At this stage, the filter removes metal shavings and debris from the break-in period. Completing this service yourself can save both time and money, while extending the life of your equipment.
This guide walks you through the process, provides troubleshooting tips, and highlights seasonal considerations to keep your machine running at its best. With proper tools, expect the service to take about 1–1.5 hours.
Safety First: Before You Begin
Hydraulic systems operate under high pressure. To ensure safe maintenance:
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Wear PPE (gloves, goggles, and long sleeves).
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Turn off ignition, remove the key, and follow lockout/tagout procedures.
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Work in a well-ventilated space.
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Drain the system completely before starting.
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Dispose of used fluid responsibly according to local environmental guidelines.
If you notice leaks, unusual noises, or performance issues after service, stop operation and consult a qualified Kubota technician.
Why the Hydraulic Filter Change Matters
The hydraulic system powers the SVL75’s lift arms, tracks, and auxiliary functions. Clean fluid prevents wear on pumps and valves, maintains proper pressure, and ensures responsive controls.
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50-Hour Service: Removes break-in debris and prevents premature wear.
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Seasonal Timing: Completing this in the fall helps prepare for colder months, when hydraulic fluid thickens and contamination risks rise.
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Cost Savings: A DIY filter change typically costs less than half of a dealer service visit.
Neglecting this service can lead to sluggish controls, low hydraulic pressure, and in severe cases, pump failure.
Tools and Parts You’ll Need
Tools
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Band-style filter wrench (rubber grip, non-damaging)
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14mm socket and ratchet (for drain plug)
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Torque wrench (for accurate tightening, 25 Nm recommended for drain plug)
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Large drain pan (minimum 40L capacity)
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Shop rags, degreaser, and absorbent pads
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Heat gun (optional, for stubborn filters)
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Funnel and measuring container
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Flashlight or work light
Parts
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Hydraulic filter
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Return filter
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Kubota SUDT2 hydraulic fluid
Pre-Service Checks
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Run the machine briefly to warm the hydraulic fluid (this improves drainage).
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Verify the current fluid level at the sight glass—it should be at the midpoint.
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Inspect for leaks or damage near the filter housing and hoses.
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If your machine has exceeded 100 hours without service, consider performing a complete fluid flush.
Step-by-Step Hydraulic Filter Change (Kubota SVL75)
Step 1: Prepare the Machine
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Park on level ground and lower all attachments.
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Shut off the engine and engage lockout/tagout.
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Open the rear access panel to reach the hydraulic tank and filter housing.
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Place the drain pan underneath.
Step 2: Drain the Hydraulic Fluid
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Locate the drain plug at the tank bottom (14mm).
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Slowly loosen the plug and allow up to 33 liters of fluid to drain.
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Inspect the O-ring and replace if damaged.
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Reinstall and torque the plug to 25 Nm.
Step 3: Remove the Old Hydraulic Filter
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Locate the filter housing on the right side of the hydraulic tank.
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Use a band wrench to loosen. If stuck, apply heat for 30–60 seconds before retrying.
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Remove by hand, draining residual fluid into the pan.
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Inspect the removed filter for debris that may indicate system wear.
Step 4: Install the New Filter
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Clean the filter housing threads.
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Lightly coat the new filter gasket with fresh hydraulic fluid.
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Hand-tighten until the gasket contacts the base, then turn an additional 1/4 turn.
Step 5: Refill with Hydraulic Fluid
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Add 33 liters of Kubota SUDT2 fluid using a funnel.
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Start the engine at low idle and cycle the hydraulics for 5–10 minutes.
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Shut down, allow fluid to settle, then top off to the sight glass midpoint.
Step 6: Test and Inspect
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Operate the machine under load (e.g., lift a bucket).
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Check for unusual noises, sluggish controls, or leaks.
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Log the service in your maintenance records.
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Dispose of old fluid at a certified recycling facility.
Troubleshooting Tips
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Stuck filters: Use a heat gun or friction tape for better grip.
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Low pressure after change: Likely due to trapped air—cycle hydraulics again.
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Cold weather prep: Use Kubota SUDT2 fluid for better winter performance.
Frequently Asked Questions
Q: How much hydraulic fluid does the Kubota SVL75 hold?
A: The system requires 33 liters (8.7 gallons) of Kubota SUDT2 hydraulic fluid.
Q: How often should I change the hydraulic filter?
A: After the initial 50-hour service, replace the return filter every 250 hours and the HST filter every 500 hours.
Q: What if my filter is stuck?
A: Apply steady torque with a band wrench. If necessary, use a heat gun to loosen expansion. Avoid chain-style wrenches that may damage the housing.
Q: What are signs of hydraulic issues after a filter change?
A: Watch for sluggish controls, whining noises, or leaks. These may indicate trapped air, contamination, or worn components.
Key Takeaway
Performing a Kubota SVL75 hydraulic filter change at the 50-hour service interval is one of the most important steps in protecting your skid steer. With proper safety measures and attention to seasonal maintenance, you’ll ensure reliable performance, lower long-term costs, and avoid unexpected downtime.
Equip your SVL75 for success.
Order your Kubota hydraulic filters and fluids at Parts Online