CAT 4W5479 (4W-5479) Gear Pump | Fits 589 834B 836 988B 988F D10N D8L D9L D9N D9R PM-565
CAT 4W5479 (4W-5479) Gear Pump | Fits 589 834B 836 988B 988F D10N D8L D9L D9N D9R PM-565
Premium hydraulic gear pump designed as a direct OEM-compatible replacement for a robust fleet of Caterpillar (CAT) heavy equipment, including large track-type tractors, wheel loaders, and cold planers. Engineered to deliver top-tier volumetric efficiency, stable high-pressure performance, and an extended service life in severe-duty mining, quarrying, and earthmoving applications.
Product Highlights
- Part Number: 4W5479 / 4W-5479
- Direct Fit OEM Replacement: Form, fit, and function align perfectly with original Caterpillar engineering standards, guaranteeing a seamless drop-in installation without any field modifications.
- Heavy-Duty Construction: Features high-strength housings and precision-hardened internal gears to endure massive hydraulic shock loads and continuous operating pressures.
- Optimized Efficiency: Advanced pressure-balanced sealing minimizes internal friction and fluid bypass, optimizing system responsiveness and maximizing equipment fuel efficiency.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4W5479 / 4W-5479 |
| Product Type | Heavy-Duty Hydraulic Gear Pump |
| Brand Compatibility | Caterpillar (CAT) |
| Application | Main Hydraulic Steering, Transmission, or Implement System |
| Material | High-Strength Wear-Resistant Alloys & Rugged Cast Structures |
| Warranty | 12 Months Warranty |
Compatible Models & Equipment
This premium gear pump is precision-engineered to provide outstanding reliability across multiple high-performance Caterpillar equipment lines:
- Caterpillar Track-Type Tractors (Bulldozers): D8L / D9L / D9N / D9R / D10N
- Caterpillar Wheel Loaders & Wheel Dozers: 988B / 988F / 834B
- Caterpillar Soil & Landfill Compactors: 836
- Caterpillar Road Cold Planers: PM-565
- Caterpillar Pipelayers: 589
Key Applications
- Heavy Equipment Steering & Powertrain Hydraulics: Delivers unyielding fluid flow to critical systems, ensuring precise dozer blade control, smooth loader lifts, and responsive machine articulation.
- High-Hour Mining & Earthmoving Cycles: Specifically built to handle the intense, abusive cycles found in rock quarries, bulk material handling, and remote mining sites.
- Complete Fluid Power Restoration: Corrects slow cycle times, excessive internal heat, and hydraulic pressure drop, fully updating your machine back to standard OEM operating specifications.
Why Choose Our Aftermarket CAT Pumps?
- Guaranteed OEM Quality: Manufactured under global ISO 9001 certified conditions to mirror original CAT technical profiles and structural integrity.
- Cost-Effective Solution: Secure original equipment dependability and matching technical outputs at an exceptionally competitive aftermarket budget.
- Ready to Ship: Maintained in stock for immediate international distribution, effectively cutting down your costly fleet or job site downtime.
- Industry-Leading Support: Backed by a full 1-year warranty and supported by an experienced team of heavy machinery hydraulic system engineers.
Frequently Asked Questions (FAQ)
Q: Will this 4W5479 pump fit both my D9 bulldozer and 988B wheel loader without adjustment?
A: Yes, the 4W-5479 gear pump is standardly integrated into several large-chassis CAT machines. The mount pattern, shaft dimensions, and port entries are identical, creating an ideal cross-model drop-in replacement.
Q: What is the best way to extend the service life of this new hydraulic gear pump?
A: Hydraulic health is all about cleanliness. We strongly advise draining the reservoir, flushing old lines to extract trapped wear particles, replacing hydraulic filters, and utilizing clean oil before priming the pump.
Q: How do you verify the quality of these aftermarket CAT pumps?
A: Every pump undergoes full dynamic testing on our calibrated hydraulic test benches. We check volumetric efficiency, internal sealing, and maximum load capacity to eliminate out-of-box technical anomalies.
Q: What express shipping options are available for emergency machine down states?
A: We provide quick processing for urgent orders. We work closely with air cargo channels and major global couriers (DHL, FedEx, UPS) to coordinate expedited global delivery to your exact job location.
Need a Quote for CAT 4W5479?
Contact us today for the latest pricing, bulk discounts, and shipping availability.
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