GVO 4437197 4389179 Hydraulic Pump AP2D36 PVD-2B-40P Main Pump Assembly Piston

Product Specification

GVO 4437197 4389179 Hydraulic Pump AP2D36 PVD-2B-40P Main Pump Assembly Piston Pump EX60 EX75 EX60-5 EX75-5 Excavator Parts

Product Description

The hydraulic pump assembly of GVO brand for the main pump of the Hitachi EX60 EX75 EX60-5 EX75-5 excavator is compatible with the AP2D36 model hydraulic pump components. It features high-quality performance.

The products are directly supplied from the manufacturer without any middlemen adding extra prices. The cost performance is far superior to similar products. There is an ample stock of goods in stock, and once you place an order, the order will be quickly processed and dispatched. There is no need for long waiting periods.

The entire machine undergoes strict pressure testing upon leaving the factory, ensuring stable quality. At the same time, we provide comprehensive after-sales warranty, and the technical team will follow up throughout the process. Maintenance inquiries can be responded to at any time.

Product Descriptio

This hydraulic main pump is specifically designed for the Hitachi EX75-5 excavator. It features a Kawasaki dual variable displacement piston pump integrated structure, with the main pump incorporating a pilot pump, perfectly matching the original hydraulic system's displacement, pressure, and power curves. Internally, it incorporates high-wear-resistant alloy pistons and a precision copper distributor plate, ensuring stable and balanced oil pressure output. This allows for synchronized and coordinated boom lifting, swinging, and traveling movements, effectively resolving common issues such as sluggish operation, weak digging power, engine stalling, hydraulic oil temperature spikes, and pump leakage.

1. The cylinder block, pistons, and distributor plate are all made of high-strength, wear-resistant materials, significantly reducing internal wear from prolonged high-intensity operation and minimizing downtime and repair losses.

2. Flow and pressure are precisely matched to the original engine load, restoring the same power as a new machine after installation. This results in powerful boom lifting, smooth traveling, and ample impact force from the hydraulic breaker.

3. The pump body flange, output spline, port layout, and solenoid valve mounting positions are all aligned with the original machine standards, eliminating the need for cutting or modifying pipe supports. Repairs can be performed by direct replacement in situ.

Packaging And Transportation

Company Introduction

The GVO brand is a professional manufacturer of hydraulic components. Its product line is comprehensive, mainly including pilot pumps, gear pumps, relief valves and safety valves, piston hydraulic pumps, various electrical components and hydraulic accessories. It also supplies engine assemblies, traveling assemblies, rotating assemblies, distribution valves and other complete vehicle components of excavators.

We adhere to the factory direct supply model, eliminating all middleman links and without any layer-by-layer price hikes. As a source manufacturer, we strictly control every production process and adhere to the quality bottom line. We will never damage the brand reputation for short-term interests. While ensuring first-class quality, we offer customers highly competitive factory prices, sufficient in-stock, stable and efficient delivery.

We treat every partner sincerely and build a full-process service system: providing model matching and working condition selection technical support before sales; following up on order progress during sales to ensure on-time delivery; responding quickly to fault inquiries and quality assurance services after sales. All problems will be handled efficiently and properly. If you have any needs, we are always on standby and dedicated to protecting you.