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AT302662/RM100202 Hydraulic Pump without Auxiliary Mounting Bracket serves as the core power component for John Deere 670D-872D series motor graders. Its core value lies in precise compatibility, robust power, and high cost-effectiveness. Ideal for repair scenarios where the original mounting bracket remains intact, it rapidly restores motor grader hydraulic system performance. When purchasing, verify the machine model and part number. After installation, strictly follow the commissioning procedures. Regularly maintain the hydraulic oil and filter elements to effectively extend the service life of the pump and hydraulic system.
| Part Name | Hydraulic Pump Without Auxiliary Mount | Part Number | AT302662 / RM100202 |
| Product Type | High-pressure external meshing gear pump | Origin | China |
| Weight | 76.1 lb | Height | 12 in |
| Width | 12.5 in | Length | 15.1 in |
| Compatible Equipment | Graders / Land Levellers | ||
| Compatible Model | 670D, 672D, 770D, 772D, 870D, 872D | ||
| Core Usage |
1. Provides hydraulic power to working attachments such as bulldozer blades and scrapers, enabling lifting, tilting, and leveling operations; 2. Supplies stable pressure to the steering system, ensuring precise and responsive steering; 3. Maintains back pressure in the hydraulic system to prevent cavitation, protecting hydraulic valve assemblies and actuators. |
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| Application | Heavy-duty, continuous operation scenarios such as highway subgrade construction, mine site leveling, farmland land improvement, and municipal road maintenance. | ||
| Related Model | AT302661/RM100201 Hydraulic Pump With Auxiliary Mount | ||
Both are interchangeable parts with identical specifications. They differ only in production batch or supplier codes. Core parameters (pressure/flow rate, shaft diameter, mounting hole positions) and compatible machine models are fully consistent. The auxiliary mounting bracket structure is identical, allowing direct interchange without modifying piping or brackets.
It is compatible with 670D, 672D, 770D, 772D, 870D, and 872D models. The core difference from AT302661/RM100201 is the absence of an auxiliary mounting bracket, meaning the original machine's mounting bracket must be reused. Additionally, this pump is not compatible with G-series graders such as 670G/672G/770G/772G/870G/872G.
Drain residual system pressure. After removing the old pump, clean all pipe connections, filters, and the oil tank. Replace hydraulic oil and filter elements to prevent contaminants from entering the new pump. Prepare tools like torque wrenches and follow the original manufacturer's maintenance manual to ensure installation accuracy.
First, manually prime and bleed the system: Add hydraulic oil through the oil port, and rotate the drive shaft 3-5 turns to expel air, preventing dry running. Idle for 15-20 minutes, inspect for leaks or abnormal noises, test the smoothness of actions like blade scraping and steering, and confirm pressure and flow meet specifications before commencing operation.
No. Blending different brands or types of fluids may degrade performance and damage the seals. Always use the specified fluid or high-quality SAE 10W-40 anti-wear hydraulic oil to maintain system reliability and prevent premature wear.
Replace hydraulic oil and filters every 500-1000 operating hours to maintain oil cleanliness; regularly inspect connections and seals, tightening or replacing as needed; avoid prolonged overload operation to prevent pump overheating; and never mix incompatible oils.
