Genuine OEM hydraulic pump designed specifically for the Case Construction machine model 770 EX. Case Construction Part Number 47407685, is manufactured by Parker Hannifin under OEM reference 7029121157. Built for rugged, demanding construction-site applications, this pump features a double-tandem gear arrangement with built-in priority flow valve – delivering both high-volume hydraulic output and dedicated priority flow for critical steering/implement circuits.
Key Features & Benefits
- Premium OEM construction: Manufactured by Parker Hannifin to match Case Construction’s high durability and fit-form-function standards.
- Double tandem gear design: Provides two gear sets in tandem to deliver the high flow rates required by loader/backhoe hydraulics while maintaining compact mounting.
- Priority valve built-in: Ensures the machine’s steering or high-priority circuit receives uninterrupted flow even under heavy implement load.
- Robust materials & design: Designed for the harsh conditions of construction equipment — high pressure, frequent cycling, vibration, and dusty/dirty environments.
- Exact fit for 770 EX backhoe-loader: Specifically specified for Case Construction’s 770 EX series equipped with the FPT BS3 engine (or equivalent spec) – making installation easy and downtime minimal.
- OEM part number match: Case 47407685, Parker 7029121157 – helps maintain machine value and guarantees compatibility.
- Designed to Case Construction hydraulic standard: Ensures system pressures, flow rates, ports and mounting match Case’s original design, so that the machine’s hydraulic system continues to deliver the correct performance, reliability and service life.
Application & Fitment
This hydraulic pump is ideal for the Case Construction 770 EX backhoe-loader model (and other compatible Case machines using same pump spec) with FPT BS3 engine configuration. If your machine lists part # 47407685 or OEM Parker #7029121157 on its pump or parts breakdown, this replacement will meet the original system spec. Confirm mounting flange, shaft spline, port orientation and rotation before fitting.
Technical Specifications (approximate / subject to verification)
- OEM Part No: Case 47407685 / Parker Hannifin 7029121157
- Type: Double tandem gear pump with built-in priority flow valve
- Construction: Heavy-duty cast-iron housing (typical for Case loader/backhoe hydraulics)
- Fitment: Direct OEM replacement for Case Construction machine; design matches OEM standards (mounting, porting, shaft, spline)
- Manufacturer: Parker Hannifin (OEM supplier for Case Construction hydraulic pumps)
- Genuine part: Matches the original manufacturer’s specification — critical for durability, warranty compliance and optimum machine performance.
Why Choose Genuine vs Aftermarket?
- Using the genuine pump ensures correct system calibration and hydraulic behaviour — priority flow valve, tandem gear design, correct materials and clear tolerances.
- Reduces risk of premature wear, cavitation, overheating or inefficient implement-performance that can occur when non-OEM components are used.
- Maintains machine resale value and is often required by OEM warranty or service programmes.
- Installation is straightforward: designed to fit exactly into your machine’s existing pump mounting, with matching port locations, rotation, shaft spline and flange pattern.
Installation & Service Tips
- Before installation, drain the hydraulic reservoir and clean all lines and filters — contamination is a common cause of pump failure.
- Ensure the hydraulic fluid meets Case Construction’s recommended specification (viscosity, cleanliness, anti-wear additives).
- Check that mounting flange and shaft alignment are correct; avoid side-load or misalignment on the pump shaft.
- After installation, bleed the system properly and monitor for any unusual noise, vibration or temperature rise in the first few hours of operation.
- Using correct filters and maintaining cleanliness in the hydraulic system will extend the life of this pump significantly.
Suitability & Compatibility
This pump is suitable for Case Construction machines listed by the manufacturer as using part # 47407685 or Parker # 7029121157 — specifically suited for the Case 770 EX backhoe-loader with FPT BS3 engine specification. Always verify against your machine’s serial number, build variant and service records to confirm correct fitment.
In summary: If you are looking for a high-quality, genuine hydraulic pump replacement for your Case Construction 770 EX, then this Parker-manufactured hydraulic pump (Case Part No 47407685 / Parker No 7029121157) is the recommended, direct fit solution — engineered to the same standard as the original and designed to secure long-term, trouble-free hydraulic performance.
