705-41-02310 7054102310 Hydraulic Gear Pump Assembly for Komatsu PC40MR-1 PC45MR-1 Mini Excavator Main Pump Parts

The 705-41-02310 Hydraulic Gear Pump Assembly is a replacement hydraulic component offered for compatible Komatsu PC40MR-1, PC40MRX-1, PC45MR-1, and PC45MRX-1 mini excavators.

Also known as a Hydraulic Gear Pump, Excavator Gear Pump Assembly, Hydraulic Pump Unit, or Mini Excavator Hydraulic Pump, this component is designed to convert mechanical drive power into hydraulic fluid flow for the corresponding equipment hydraulic system.

Gear pumps are positive-displacement hydraulic pumps that move hydraulic oil through a pumping chamber using rotating gears.

As an important component of the hydraulic system, a correctly matched hydraulic gear pump helps provide the oil flow required by the designated machine hydraulic circuit.

The 705-41-02310 pump features a compact metallic housing, machined mounting flange, mounting bolt holes, central pump body, hydraulic connection ports, and a multi-section housing structure.

Its compact construction is intended for installation in compatible mini excavator hydraulic systems.

JISION supplies hydraulic gear pumps, excavator main pumps, hydraulic piston pumps, travel motors, swing motors, control valves, and construction machinery replacement components to equipment owners, maintenance workshops, construction companies, and international spare parts distributors.

Product Specifications

Key Features

1. Hydraulic Gear Pump Operation

Designed to transfer hydraulic fluid through a gear-type positive-displacement pumping mechanism.

2. Compact Pump Construction

Features a compact housing configuration intended for installation within compatible mini excavator hydraulic systems.

3. Durable Metal Housing

The metallic housing provides structural support for the internal pumping components and hydraulic connection interfaces.

4. Machined Mounting Flange

Features a mounting flange with fixing holes for installation in the corresponding equipment pump mounting location.

5. Hydraulic Fluid Delivery

Designed to supply hydraulic oil flow to the compatible hydraulic circuit according to the machine's original system requirements.

6. Integrated Housing Assembly

The pump incorporates connected housing sections secured in a compact mechanical configuration.

7. Hydraulic Connection Interfaces

Equipped with hydraulic connection openings intended for installation with the corresponding system hoses, fittings, or manifolds.

8. Mini Excavator Replacement Application

Suitable as a replacement option for compatible hydraulic gear pump assemblies requiring part number 705-41-02310.

Compatible Excavator Models

Primary Reference Models:

• Komatsu PC40MR-1

• Komatsu PC45MR-1

Additional Reference Models:

• Komatsu PC40MRX-1

• Komatsu PC45MRX-1

Reference Part Numbers:

• 705-41-02310

• 7054102310

Important Compatibility Notice

Compatibility may vary depending on machine serial number, hydraulic system configuration, pump displacement, rotation direction, drive shaft specifications, and mounting dimensions.

The equipment model alone does not guarantee that the hydraulic pump will fit every machine.

Please verify the original hydraulic pump part number and equipment serial number before purchasing.

For PC35MR-1 applications, additional part number verification is required.

Product Applications

The 705-41-02310 hydraulic gear pump is offered for compatible applications involving:

• Mini Excavator Hydraulic Gear Pump Replacement

• PC40MR-1 Hydraulic System Maintenance

• PC45MR-1 Hydraulic Pump Repairs

• Excavator Hydraulic System Servicing

• Hydraulic Gear Pump Replacement

• Construction Machinery Hydraulic Repairs

• Mini Excavator Maintenance and Overhaul

Installation and Maintenance Recommendations

Correct hydraulic gear pump installation is important for hydraulic system reliability and safe equipment operation.

Before installation:

1. Verify the original hydraulic pump part number and machine serial number.

2. Confirm the replacement pump's mounting and drive specifications.

3. Shut down the machine and release hydraulic pressure according to the manufacturer's service manual.

4. Inspect hydraulic hoses, fittings, oil filters, and the hydraulic reservoir for contamination.

5. Check the hydraulic circuit for metal particles or damage caused by the previous pump.

6. Verify the hydraulic inlet and outlet connections.

7. Confirm the pump drive shaft and rotation direction.

8. Install the pump using the specified mounting procedure and tightening torque.

9. Fill and prime the pump according to the equipment manufacturer's instructions.

10. Check hydraulic flow, operating pressure, abnormal noise, and external leakage before returning the machine to service.

Safety Notice: Hydraulic systems can retain high-pressure fluid even after machine shutdown. Never remove hydraulic connections while the system is pressurized.

Installation and testing should be performed by qualified hydraulic maintenance technicians.

Why Choose JISION?

Professional Construction Machinery Parts Supplier

JISION supplies replacement hydraulic, electrical, and diesel engine components for excavators, wheel loaders, bulldozers, and other heavy construction machinery.

Wide Range of Hydraulic Components

Our product range includes hydraulic gear pumps, main hydraulic pumps, piston pumps, travel motors, swing motors, pilot valves, control valves, hydraulic cylinders, and hydraulic pump repair parts.

International Parts Supply

We support excavator owners, equipment maintenance workshops, construction contractors, and international machinery parts distributors with product sourcing inquiries.

Part Number Identification Assistance

Customers can provide excavator models, machine serial numbers, original hydraulic pump part numbers, identification plate photos, and mounting dimensions to help identify suitable replacement components.

Wholesale Inquiries Welcome

Contact JISION for wholesale quotations, product availability, bulk purchasing, and international shipping arrangements.

Ordering Information

Product Name: Hydraulic Gear Pump Assembly

Part Number: 705-41-02310 / 7054102310

Reference Equipment Models: PC40MR-1 / PC45MR-1 / PC40MRX-1 / PC45MRX-1

Application: Mini Excavator Hydraulic System

To help ensure accurate product selection, please provide:

• Excavator Brand and Model

• Machine Serial Number

• Original Hydraulic Pump Part Number

• Pump Identification Plate

• Pump Drive Shaft Specifications

• Mounting Flange Dimensions

• Hydraulic Port Configuration

• Pump Rotation Direction

• Pump Displacement Information

• Photos of the Existing Hydraulic Pump

• Required Purchase Quantity

Contact JISION for product specifications, pricing, availability, wholesale orders, and international shipping information.

JISION – Reliable Hydraulic Gear Pumps and Mini Excavator Replacement Parts for Construction Machinery.