Introduction
Every hydraulic system eventually needs maintenance. High-pressure pumps, seals, and valves operate under extreme conditions — and when parts wear out, performance drops. That’s where a hydraulic pump major repair kit becomes indispensable.
This guide breaks down what’s inside a Val-Lubric Major Repair Kit, explains how it helps extend pump life, and provides a buyer checklist for maintenance professionals looking for reliability and precision.
1. What Is a Major Repair Kit for Hydraulic Pumps?
A major repair kit is a comprehensive set of parts designed to restore a hydraulic pump’s performance to its original condition. It typically includes all key wear components like O-rings, valves, cylinders, and seals, enabling technicians to perform complete in-field rebuilds without replacing the entire pump.
Val-Lubric’s Major Repair Kit #590031 is built for its Hydraulic Sealant Pump — providing an easy, cost-effective way to restore functionality and ensure pressure consistency.
2. Components Included in a Typical Major Repair Kit
Val-Lubric’s kit includes every essential component required for hydraulic system servicing:
| Part Number | Description | Quantity |
|---|---|---|
| 608705 | Screw | 1 |
| 934006 | O-Ring | 1 |
| 2800011 | Nylon Cup | 2 |
| 2800027 | Minor Repair Kit | 1 |
| 51251 | Hydraulic Fluid – 1 Pint Can | 1 |
| 50960 | Hydraulic Fluid Bag | 1 |
| 90048 | By-Pass Valve | 1 |
| 90059 | Check Valve Assembly | 1 |
| 27524 | Button Head Coupler Repair Kit | 1 |
| 90040 | Hydraulic Pump Cylinder with Piston | 1 |
Each component ensures long-term reliability and restores factory-level performance.
3. Key Benefits of Using a Major Repair Kit
✅ Cost Efficiency:
Instead of replacing the entire hydraulic pump, you can rebuild it for a fraction of the cost.
✅ Reduced Downtime:
All essential components are included, allowing fast field servicing and quick reassembly.
✅ Extended Equipment Life:
Genuine parts restore pressure integrity and prevent seal failures or leaks.
✅ Simplified Maintenance:
Everything comes pre-matched for compatibility — no need to source parts separately.
✅ Sustainability:
Repairing rather than replacing minimizes waste and supports sustainable operations.
4. When Should You Use a Major Repair Kit?
You should consider performing a major repair when you notice:
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Reduced hydraulic pressure or flow.
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Leakage around fittings or cylinders.
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Unusual noise during operation.
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Irregular pump stroke or handle resistance.
Performing a major repair on time prevents more serious damage and keeps your lubrication system performing optimally.
5. Val-Lubric’s Approach to Quality
Every Val-Lubric repair kit is engineered using premium-grade materials that match original specifications. Each O-ring, valve, and fitting undergoes rigorous testing for compatibility with high-pressure systems (10,000–15,000 PSI).
Val-Lubric also offers Minor Repair Kits for smaller maintenance jobs — ensuring continuous equipment reliability between major overhauls.
6. Buyer’s Checklist: How to Choose the Right Repair Kit
Before purchasing, verify the following:
✅ Pump model compatibility (check product code on the nameplate).
✅ Inclusion of hydraulic fluids and seals.
✅ Availability of related minor kits and couplers.
✅ Genuine manufacturer parts (avoid low-quality replicas).
✅ Easy access to documentation or service diagrams.
When in doubt, contact Val-Lubric technical support for guidance on selecting the right repair kit for your specific pump model.
Conclusion
A hydraulic pump major repair kit is not just a maintenance tool — it’s a performance investment. It helps prevent downtime, improve operational safety, and extend your equipment’s lifespan.
Val-Lubric’s Major Repair Kit #590031 is trusted by maintenance teams worldwide for its reliability, precision, and ease of installation — ensuring your hydraulic systems keep running at full efficiency.
👉 Learn more at Val-Lubric Major Repair Kit