Custom AT302661 RM100201 Hydraulic Pump With Auxiliary Mount Replacement for John Deere Graders 670D, 670G, 672D, 672G, 770D, 770G, 772D, 772G, 870D, 870G, 872D, 872G Manufacturer, Manufacturers

AT302661 and RM100201 are auxiliary mounting bracket hydraulic pumps Replacement specifically designed for John Deere 670/770/870 Series (D/G models) motor graders. Featuring an integrated design, they serve as the power core of the machine's hydraulic system while precisely interfacing with the engine and hydraulic lines via the auxiliary mounting bracket. These pumps provide stable high-pressure oil supply to the motor grader's blade lift, blade tilt, steering system, and auxiliary attachments. Compatible with original factory installation specifications, it is a critical component for resolving pump wear, insufficient pressure, and leakage issues. Primarily used in heavy-duty, continuous operation scenarios such as highway subgrade leveling, mine site grading, farmland reclamation, and municipal road maintenance.

Product Description

Overview
AT302661/RM100201 Replacement Hydraulic Pump with Auxiliary Mounting Bracket serves as the core power component for John Deere 670/770/870 series motor graders. Its core value lies in integrated installation, precise compatibility, robust power, and durable reliability. It rapidly restores motor grader hydraulic system performance, ensuring efficient grading operations. 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.
Specifications
Part Name Hydraulic Pump With Auxiliary Mount Part Number AT302661/RM100201
Product Type High-pressure integrated hydraulic pump Origin China
Weight 74.8 lb Height 6.5 in
Width 11 in Length 14 in
Compatible Equipment Graders/Land Levellers
Core Usage 1. Provides hydraulic power for blade lifting, tilting, and leveling;
2. Supplies stable pressure to the steering system;
3. Supports power output for auxiliary hydraulic devices (rippers);
4. Rigid engine connection via bracket to reduce vibration.
Application Heavy-duty operations: highway subgrade leveling, mine site grading, farmland improvement, and municipal maintenance.
Key Features
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Easy Installation
Integrated design with auxiliary mounting bracket. Hole positions and shaft diameters perfectly match OEM specifications for quick assembly.
Powerful Performance
High-pressure, high-flow output ensures rapid response for blade movements, restoring overall machine efficiency.
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Durable & Reliable
High-strength materials and precision machining provide resistance to contaminants and vibrations in harsh conditions.
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Outstanding Value
High-quality replacement parts offer significant cost savings while maintaining operational reliability and performance.
Compatible Models
670D670G 672D672G 770D770G 772D772G 870D870G 872D872G
Frequently Asked Questions
What is the difference between AT302661 and RM100201?
Both are interchangeable parts with identical specifications. They differ only in production batch or supplier codes. Mounting holes, shaft diameters, and pressure parameters are exactly the same.
Which motor grader models are compatible with this pump?
It is compatible with the full series of John Deere 670D/G, 672D/G, 770D/G, 772D/G, 870D/G, and 872D/G motor graders.
How to assess the quality of these replacement parts?
Verify part numbers; inspect pump body material (ductile iron), core component hardness (42CrMo alloy steel), and high-pressure resistant fluororubber seals.
What preparations are required before installation?
Drain residual pressure, clean pipe connections, filters, and the reservoir. Replace hydraulic fluid and filter elements to prevent contamination of the new pump.
What are the critical steps for the first startup?
Manual oil filling and air purging are mandatory. Rotate the drive shaft 3-5 turns manually, then idle run for 15-20 minutes to check for leaks before full operation.
How does routine maintenance extend pump lifespan?
Replace hydraulic oil and filters every 500-1000 hours. Regularly inspect seals and avoid prolonged overload operation or mixing different oil types.

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