705 52 21070 Hydraulic Gear Pump for Komatsu Bulldozer D41A 6 D41E 6 01.jpg

Hydraulic Gear Pump 705-52-21070 for Komatsu D41A-6 D41E-6 Bulldozer

Name: Hydraulic Gear Pump 705-52-21070 for Komatsu D41A-6 D41E-6 Bulldozer
SKU: 28387
Price: 669.00 USD
Availability: InStock

$669.00

For Komatsu D65A, D65E, D65P and D65S machines: an aftermarket new hydraulic pump, part number 07430-72203 that feeds pressurized oil to the cylinders and motors so the machine can dig, lift and travel.

Category: Hydraulic Pump Assembly

Description
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07430-72203 Hydraulic Pump is an aftermarket replacement hydraulic pump for Komatsu machines, including D65A, D65E, D65P, D65S, D75A. The main hydraulic pump converts engine power into pressurized oil flow. Supplied by LIONKITS as aftermarket new with a 6-month warranty.

07430-72203 Hydraulic Pump Specifications

Product Type: Hydraulic Pump
Part Number: 07430-72203
Compatible Brand: Komatsu
Machine Type: Machine
Condition: Aftermarket new
Warranty: 6 months
Brand: LIONKITS
Country of Origin: China

Komatsu Models Compatible with the 07430-72203 Hydraulic Pump

Komatsu D65A
D65E
D65P
D65S
D75A

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 07430-72203 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

Preparation time: 2-3 days
Delivery time: 3-7 days
Shipping methods: DHL, FedEx, UPS, TNT, USPS EMS
Payment methods: Credit Card, PayPal

Frequently Asked Questions

What is the 07430-72203 Hydraulic Pump?

The 07430-72203 Hydraulic Pump is an aftermarket replacement hydraulic pump for Komatsu machines, supplied as aftermarket new under part number 07430-72203.

Which Komatsu models does the 07430-72203 Hydraulic Pump fit?

It is listed for D65A, D65E, D65P, D65S, D75A and other models in the compatibility list above. 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.