Custom AT331223 AT317640 Tandem Hydraulic External Gear Pump Replacement for John Deere Backhoe Loaders 310G, 310SG, 310SJ, 310SK, 310SL, 315 P, 315J, 315SG, 315SK, 315SL, 325J, 325SK Factory, Exporters

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Custom AT331223 AT317640 Tandem Hydraulic External Gear Pump Replacement for John Deere Backhoe Loaders 310G, 310SG, 310SJ, 310SK, 310SL, 315 P, 315J, 315SG, 315SK, 315SL, 325J, 325SK Factory, Exporters

AT331223 / AT317640 is a Tandem Hydraulic External Gear Pump replacement part specifically designed for John Deere backhoe loaders. It offers direct replacement with original equipment specifications and is compatible with models 310G, 310SG, 310SJ, 310SK, 310SL, 315P, 315J, 315SG, 315SK, 315SL, 325J, and 325SK models. It delivers stable hydraulic power for the machine's compound movements, serving as a core component for ensuring operational efficiency. It delivers dual independent oil sources for compound actions like boom, bucket, swing, and steering, meeting the demand for synchronized multi-action operation. Widely used in high-frequency compound action scenarios for excavator-loaders in municipal engineering, infrastructure construction, agricultural and forestry transformation, small-scale mining, and similar applications.

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Product Description

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Product Overview

The AT331223 / AT317640 Dual External Gear Pump is a critical hydraulic component engineered for heavy-duty backhoe loaders. Its primary value lies in its direct OEM specification replacement, facilitating a dual-path oil supply for high-efficiency composite operations. Designed for durability and reliability, this pump ensures the rapid restoration of a machine's multi-function operational capability across various engineering environments.

Featuring identical interfaces and dimensions to original equipment, this hydraulic pump replacement eliminates the need for additional machining or modification, significantly reducing maintenance downtime.

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Technical Specifications

Part Name	Hydraulic Pump	Part Number	AT331223 / AT317640
Compatible Equipment	Backhoe Loader	Product Type	Tandem External Gear Pump
Weight	58 lb	Height	6.25 in
Width	10 in	Length	14 in
Origin	China	Quality	OEM Standard
Core Usage	Provides dual independent hydraulic power sources for compound movements such as boom, bucket, slewing, and steering.
Related Models	AT334876/PG200235, AT179792, AT428960, AT153470, AT310590, AT440858, AT501973, AT101453/AT163523

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Key Features

✅ Direct Replacement

Interfaces and dimensions match OEM specifications exactly, ensuring efficient installation without modifications.

✅ Dual-Path Supply

Twin-pump design supports simultaneous multi-action operation, significantly enhancing job-site efficiency.

✅ High Durability

Compact gear pump construction with high impact and wear resistance, ideal for high-frequency start-stop conditions.

✅ Cost-Effective

Premium aftermarket parts provide a perfect balance between reduced maintenance costs and high reliability.

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Compatible Models

This unit is specifically designed for the following backhoe loader series:

310G 310SG 310SJ 310SK 310SL 315P 315J 315SG 315SK 315SL 325J 325SK

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Frequently Asked Questions

Which backhoe loader models is the AT331223 / AT317640 compatible with?

It is compatible with 12 models in total, including 310G, 310SG, 310SJ, 310SK, 310SL, 315P, 315J, 315SG, 315SK, 315SL, 325J, and 325SK. It serves as a direct replacement with fully compatible interfaces.

Is this an OEM part or an aftermarket part?

AT331223 / AT317640 refers to the original manufacturer part number. We provide high-quality aftermarket replacements that meet or exceed OEM standards, often labeled as "Direct Replacement for AT331223 / AT317640."

What critical steps should be followed during installation?

Key steps include: 1. Draining hydraulic pressure and sealing ports; 2. Cleaning the reservoir and replacing filters; 3. Manually priming the new pump with oil to prevent dry running; 4. Tightening flange bolts to correct torque; 5. Conducting an idle test run before applying full load.

How do I troubleshoot abnormal noises after installation?

Abnormal noises are typically caused by air ingress or dry running. Ensure the pump was properly primed, check that the oil level is adequate, and verify that all suction lines are airtight.

How can I extend the service life of this hydraulic pump?

Regular maintenance is vital. Replace hydraulic oil and filters every 500–1000 hours, avoid prolonged overpressure operation, and ensure the hydraulic system remains free of contaminants.

When should the pump be replaced rather than repaired?

Replacement is recommended if there is a pump body fracture, severe gear/shaft seizure, excessive internal leakage that slows operation, or if the cost of professional repair approaches the price of a new unit.

Product Detail

Custom AT331223 AT317640 Tandem Hydraulic External Gear Pump Replacement for John Deere Backhoe Loaders 310G, 310SG, 310SJ, 310SK, 310SL, 315 P, 315J, 315SG, 315SK, 315SL, 325J, 325SK Factory, Exporters

Product Description

Product Overview

Technical Specifications