Use For Caterpillar 834H, 988G, 988H, 992, 99K Wheel Loader Hydraulic Pump 3850022 385-0022 10R3589 Main Piston Pump Construction Machinery Aftermarket Parts manufacturer

High-performance main piston pump designed for Caterpillar 834H, 988G, 988H,992, 993 excavators and compatible construction machinery. Manufactured by IRON CAVALRY as an aftermarket replacement part meeting OEM specifications.

• Displacement Range: 200 ml/rev (specific models may support a wider adjustment range)
• Pressure Rating: Rated 35 MPa, peak 40 MPa
• Control Mode: Supports LA0/LA1 dual-mode split power control, allowing independent adjustment of power for both piston assemblies
• Integrated Functions: Built-in auxiliary gear pump, relief valve, and PTO (Power Take-Off) expansion interface

• Designed for construction machinery, such as the Caterpillar 834H, 988G, 988H, 992, 993 and other large Wheel Loader
• Utilizes load-sensing control technology to dynamically adjust pump output flow
• Approximately 25% more efficient than conventional pumps
• Minimizes hydraulic system heat generation

• Installation Requirements: Requires a flexible coupling with high shaft alignment accuracy (concentricity deviation ≤ 0.1 mm, tilt angle < 1°)
• Maintenance Guidelines: Recommended use of ISO VG46 anti-wear hydraulic oil with a cleanliness level of NAS Class 7
• Regular Monitoring: Oil temperature, pressure pulsation, and piston wear should be checked periodically

Guangzhou Tieqi Engineering Machinery Co., Ltd. ("IRON CAVALRY") is strategically located in Guangzhou's Huangpu District, approximately an hour from Baiyun International Airport. With nearly 15 years of experience, we specialize in engineering machinery hydraulics.

Driven by our core values of "Pragmatism and Progress," we are committed to delivering practical solutions and upholding our responsibilities.

Our efficient execution and rigorous approach to manufacturing ensures our products meet over 95% of original performance specifications, building widespread trust in China's excavator hydraulic assembly sector.

We maintain a ready inventory of over 500 assembly types, providing access to more than 6,000 different parts. Our core products include hydraulic pumps, control valves, travel, and swing assemblies.

Our 4,000-square-meter factory in Guangzhou is equipped for professional manufacturing, precision assembly, rigorous testing, and quality certification.

For large items, we use sturdy plywood crates secured with metal fasteners for added stability. Inside, products are cushioned with bubble wrap and secured with wooden braces, with special attention given to protecting vulnerable parts. Externally, crates are reinforced with high-strength PET plastic strapping and wrapped in highly waterproof black film.