CAT 4W5477 (4W-5477) Gear Pump | Fits 771C 775B PR-1000C PR-1000 PR-450C PR-450 PR-750B 9C 9U 9S 772B 768C
CAT 4W5477 (4W-5477) Gear Pump | Fits 771C 775B PR-1000C PR-1000 PR-450C PR-450 PR-750B 9C 9U 9S 772B 768C
Premium hydraulic gear pump designed as a direct OEM-compatible replacement for a wide range of Caterpillar (CAT) heavy machinery, including rigid dump trucks, road cold planers, and track-type tractors. Engineered to deliver exceptional volumetric efficiency, stable fluid power, and an extended service life under the most demanding earthmoving, mining, and paving operations.
Product Highlights
- Part Number: 4W5477 / 4W-5477
- Direct Fit OEM Replacement: Form, fit, and function perfectly match original Caterpillar engineering specifications, ensuring hassle-free drop-in installation without modifications.
- Heavy-Duty Construction: Built with high-strength anti-wear housings and precision-machined gears to withstand continuous high-pressure hydraulic demands and rugged field environments.
- Optimized Efficiency: Advanced pressure-balanced design minimizes internal friction and fluid leakage, maximizing hydraulic system responsiveness and overall machinery fuel efficiency.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4W5477 / 4W-5477 |
| 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 & Rigid Cast Iron |
| Warranty | 12 Months Warranty |
Compatible Models & Equipment
This heavy-duty gear pump is precision-engineered to fit a versatile fleet of Caterpillar machinery and attachments:
- Caterpillar Off-Highway Trucks & Tractors: 771C / 775B / 772B / 768C
- Caterpillar Road Cold Planers: PR-1000C / PR-1000 / PR-450C / PR-450 / PR-750B
- Caterpillar Bulldozer Equipment / Blades: 9C / 9U / 9S
Key Applications
- Multi-Equipment Hydraulic Systems: Reliable fluid power supply for heavy truck steering, road milling depth adjustments, and bulldozer blade control.
- Road Construction & Mining Operations: High durability for heavy duty cycles in asphalt paving, milling, quarry hauling, and aggregate production.
- Hydraulic System Restoration: Eliminates slow cycle times, erratic pressure delivery, and fluid slip to fully restore heavy machinery efficiency back to factory standards.
Why Choose Our Aftermarket CAT Pumps?
- Guaranteed OEM Quality: Manufactured under strict ISO 9001 quality guidelines to meet or exceed original equipment fitment and long-term durability.
- Cost-Effective Solution: Get dependable dealer-level performance and exact specifications at a highly competitive aftermarket price point.
- Ready to Ship: Maintained in stock for quick international dispatch, cutting down your fleet breakdown time significantly.
- Industry-Leading Support: Backed by a full 1-year warranty and a seasoned team of heavy machinery hydraulic technical experts.
Frequently Asked Questions (FAQ)
Q: Is this 4W5477 gear pump compatible with both CAT trucks and road planers?
A: Yes, the 4W-5477 gear pump is a versatile hydraulic unit utilized across several CAT applications. It features identical mounting patterns and port alignments to perfectly serve as a multi-model direct replacement.
Q: What critical steps should be taken during installation of this pump?
A: To ensure optimal performance and long life, you must drain the old fluid, thoroughly flush the hydraulic reservoir/lines to remove debris, replace all filters, and pre-fill the pump with clean hydraulic fluid prior to cranking the engine.
Q: Do your hydraulic pumps undergo factory testing?
A: Absolutely. Every single gear pump undergoes rigorous functional, flow, and pressure testing under simulated operating loads before packaging to guarantee out-of-the-box reliability.
Q: How fast can I get this pump for an urgent machine repair?
A: We know how costly machine downtime is. In-stock 4W5477 pumps are packed and processed quickly, utilizing express air shipping carriers to get your machinery back on the job site as fast as possible.
Need a Quote for CAT 4W5477?
Contact us today for the latest pricing, bulk discounts, and shipping availability.
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