126 2073 Hydraulic Pump for Caterpillar CAT Excavator 320BL 322BL 325BLN 01.jpg

Hydraulic Pump 126-2073 for Caterpillar CAT 320BL 322BL 325B LN Excavator

An aftermarket new hydraulic pump for John Deere 4120, 4320, 4520 and 4720 tractors, part number LVA12934. The pump supplies the oil flow and pressure the machine hydraulics work with. Unit weight is about 8.5 kg.

Category: Hydraulic Pump Assembly

Description
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LVA12934 Hydraulic Pump is an aftermarket replacement hydraulic pump for John Deere tractors, including 4120, 4320, 4520, 4720. The main hydraulic pump converts engine power into pressurized oil flow. Supplied by LIONKITS as aftermarket new with a 6-month warranty.

LVA12934 Hydraulic Pump Specifications

Product Type: Hydraulic Pump
Part Number: LVA12934
Compatible Brand: John Deere
Machine Type: Tractor
Condition: Aftermarket new
Product Weight: 8.500 kg/18.74 pounds(1 piece)
Package Dimensions: 13.78 inch(L) x 9.06 inch(W) x7.87 inch(H)
Warranty: 6 months
Brand: LIONKITS
Country of Origin: China

John Deere Models Compatible with the LVA12934 Hydraulic Pump

John Deere Tractor 4120 4320 4520 4720

Your model is not listed? Contact LIONKITS via live chat or email with your machine model and nameplate photo, and we will confirm compatibility.

What Does a Hydraulic Pump Do?

The main hydraulic pump converts engine power into pressurized oil flow. That oil moves the boom, arm, bucket, swing and travel functions, so every machine movement depends on it. Because it takes the most punishment, it is usually the first major hydraulic component to wear out.

Signs the Part Needs Replacing

Slow or weak movement on all functions: when everything is slow at once, not just one circuit, the pump is the most likely source.
Whining, knocking or grinding noise: internal wear or cavitation, especially on start-up or when the oil is cold.
Hydraulic oil running hot: internal bypass leakage turns pressure into heat.
Metal particles in the filter or case drain: a failing pump sheds metal and pushes out more case drain flow.
Erratic or spongy movement, foamy oil: air entering the suction line, or aeration, upsets pump flow.

These symptoms overlap with clogged filters, low oil, air in the suction line and worn valves, so check the filters and oil level before replacing the part.

How to Order and Install the LVA12934 Hydraulic Pump

Confirm your machine model, the part number and the pump model on your existing pump before ordering.
Send a photo of the old pump or the nameplate if you are not sure; LIONKITS will confirm fitment for you.
Change the hydraulic oil and the return filters before fitting the new pump; a new pump installed in contaminated oil will fail early.
If the old pump failed internally and shed metal, flush the tank, hoses and oil cooler and inspect the control valve and motors for contamination.
Fill the pump case with clean hydraulic oil and prime the pump as the service manual specifies before the first start.
Check the suction line, strainer and fittings for air leaks, and tighten bolts to the specified torque.
Run the machine at low speed first, then check pressure, noise and leaks.

Shipping, Payment and Support

Dispatch and delivery: Your package will be sent within 2-3 business days, and another 3-7 business days to arrive in your country
Payment methods: Credit Card, PayPal, T/T, Western Union
Returns and refunds: If you encounter any issues with the product, please contact us promptly and provide detailed feedback. We will handle the return or exchange promptly

Frequently Asked Questions

What is the LVA12934 Hydraulic Pump?

The LVA12934 Hydraulic Pump is an aftermarket replacement hydraulic pump for John Deere tractors, supplied as aftermarket new under part number LVA12934.

Which John Deere models does the LVA12934 Hydraulic Pump fit?

It is listed for 4120, 4320, 4520, 4720. If you are unsure, send your machine nameplate to LIONKITS for confirmation.

How do I know my hydraulic pump is failing?

Typical signs are slow or weak movement on all functions, whining or knocking noise, hot hydraulic oil, metal particles in the filter or case drain and erratic or spongy movement.