AT331223 hydraulic gear pump For John Deere backhoe loader

Short Description:

AL213995 and AL161043 are interchangeable variable axial plunger pumps, aftermarket replacement spare parts for John Deere loaders.

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Product Detail

Product Tags

description

product parameters

Part No：AT331223
Product Type：Tandem Hydraulic Gear Pump
Applicable Equipment：John Deere Backhoe Loader (310G,310SJ,310SK,310SL,315SK,325J,325K,325SK)
Control Mode：Fixed displacement twin gear structure
Displacement：Dual section integrated
Nominal Working Pressure：25 MPa (250 bar)
Max Instantaneous Peak Pressure：30 MPa (300 bar)
Rated Rotation Speed：2400 rpm
Max Allowable Rotation Speed：2700 rpm
Working Medium：ISO VG46 Anti-wear Hydraulic Oil
Working Temperature Range：-20℃ ~ +105℃
Main Material：Cast iron housing, alloy steel gear pair, FKM fluorine rubber seal
Surface Treatment：Precision grinding, stress relief annealing, anti-rust coating
Shaft Specification：Original standard splined shaft
Interchangeability：1:1 OEM interchangeable, direct bolt-on installation
Product Condition：Brand new aftermarket part, 100% hydraulic bench tested

advantage

- Twin integrated gear design separates oil supply for front loader and rear backhoe
Two independent flow channels supply hydraulic oil separately for front loading and rear digging, avoiding mutual flow interference during compound operation.
- Compact integrated structure fits the limited engine compartment of backhoe loader
Combined double pump body saves installation space, easy disassembly and replacement without heavy modification of original pipeline layout.
- Robust alloy gear pair for frequent alternating digging and loading impact
High precision alloy gear pair reduces wear and noise, coping with repeated impact loads during frequent switching between excavation and loading work.
- Stable flow output keeps consistent speed of front and rear working equipment
Constant flow characteristic ensures stable movement speed for both loader boom and backhoe arm, improving operation controllability for trenching and grading.
- Low internal leakage design reduces heat generation during long continuous operation
Precision fit between gears and housing minimizes internal leakage, lowering system temperature rise for long-hour municipal construction.

FAQ

Q1: Which machine does AT331223 hydraulic pump fit?
A1: This tandem gear pump fits John Deere backhoe loader models:310G,310SJ,310SK,310SL,315SK,325J,325K,325SK. Confirm machine serial number before purchase.

Q2: What hydraulic functions does this pump support?
A2: It provides hydraulic oil for front loader boom, front bucket, rear digging arm, rear bucket and steering system, completing trenching, excavation and material loading tasks.

Q3: What are typical failure symptoms of worn pump?
A3: Typical symptoms: front or rear equipment moves slowly, inconsistent speed between front and rear arms, abnormal noise during operation, obvious temperature rise in continuous work, oil leakage from shaft seal.

Q4: What hydraulic oil should be used for this pump?
A4: Use ISO VG46 anti-wear hydraulic oil. Working temperature -20℃~105℃. Do not mix different oil brands, avoid long continuous running under peak pressure.

Q5: How to extend service life of AT331223 hydraulic pump?
A5: Keep hydraulic oil clean and replace filter regularly. Avoid sudden heavy impact when digging hard ground. Do not overload front and rear working equipment at the same time, check pipe fittings for oil leakage periodically.

warehouse

We have built four spare parts warehouses in Xuzhou, Jining, Kunshan and Changsha to provide customers from all over the world with a variety of high-quality spare parts. We can basically ship self-provided spare parts within three days after confirming the order. If the spare parts need to be adjusted or processed, they will be shipped within 7-30 days.