Hitachi ZAX60 Hydraulic Main Pump – Japanese Genuine (AP2D25LV1RS6-829-0 / 4663300)

Description

Detail Information

1. Key Features & Benefits

• Japanese Genuine Hitachi Specification – OEM part numbers 4663300 and AP2D25LV1RS6-829-0. Manufactured to Hitachi‘s original factory standards for the ZAX60 (ZX60) series excavators. This is a brand‑new, never‑used hydraulic main pump – not remanufactured, not rebuilt, not a generic aftermarket substitute.

• High‑power Uchida / Rexroth AP2D25 tandem axial piston design – The AP2D25 series is a variable displacement double (tandem) axial piston pump, combining two independent pumping units in one robust housing. This design allows the simultaneous powering of multiple hydraulic circuits – travel, swing, boom, arm, and bucket – ensuring smooth, coordinated machine operation even under heavy load.

• Delivers rated working pressure up to 24.5 MPa (≈3,550 psi) , with a maximum intermittent pressure capacity of 29.4 MPa (≈4,350 psi). The pump’s displacement is 2 × 25 cm³/rev, giving your ZAX60 the hydraulic power it needs for the toughest digging and lifting tasks.

• Built‑in power control system for fuel efficiency – The pump is equipped with an integrated power control (load‑sensing) system that continuously matches pump output to actual working load. This reduces parasitic engine load, improves fuel economy, and extends the life of both the pump and the engine. It also includes an integral third gear pump for the pilot control circuit.

• Direct bolt‑on replacement for Hitachi ZAX60 / ZX60 – The pump mounts to the engine flywheel housing using factory‑spec adapter plates and splines. Hydraulic port sizes, thread types, and flange patterns match the original installation – no drilling, no adapters, no fabrication.

• Compact, serviceable heavy‑duty construction – Housed in a high‑strength cast iron casing weighing approximately 55–60 kg. Key wear components (cylinder block, piston assemblies, valve plate, swashplate) are accessible for inspection without full pump teardown, simplifying routine maintenance.

• Wide cross‑brand compatibility – The AP2D25LV series is used across multiple brands of 5–7 ton midi excavators, making this pump a versatile replacement for Hitachi, Hyundai, Doosan, Kobelco, Volvo, Caterpillar, and other machines with the same hydraulic architecture.

• Pre‑shipment visual verification – Before packing, we send you detailed high‑resolution photographs of the actual unit (mounting flange, splines, port threads, casting marks, and overall condition). You approve shipment – we never ship blind.

• Fast delivery – 5–8 working days lead time from our Guangzhou warehouse. Monthly supply capacity of 300 units, available for single‑piece or bulk orders.

2. Applications

The Hitachi AP2D25LV1RS6-829-0 hydraulic main pump powers the ZAX60 (ZX60) midi excavator across a wide range of demanding industries:

• Urban construction & utilities – Sidewalk repairs, water and gas line trenching, fibre‑optic cable installation, and small‑scale demolition. The pump’s load‑sensing control adjusts flow to match light‑duty cycle requirements, reducing fuel consumption while maintaining precise tool control.

• Residential landscaping & pool excavation – Pool digs, retaining walls, grading, and drainage work. The tandem design allows independent flow to travel and attachment circuits, enabling simultaneous operation of boom swing and bucket curl without power loss.

• Agriculture & land management – Drainage ditch cleaning, irrigation trenching, pond maintenance, and fence post hole digging. The pump’s high torque output in low‑speed, high‑pressure mode provides the tractive force needed for pulling through soft, muddy fields.

• Mining support & quarry maintenance – Site cleanup, drainage maintenance, equipment pad grading, and light aggregate handling. Abrasive dust and sharp rock fragments place heavy demands on pump sealing and wear components. The cast iron housing and precision‑ground internal components withstand these harsh conditions.

• Equipment rental fleet maintenance – Midi excavators are frequent rental items. A failed main pump stops production completely. A genuine new pump provides predictable service life (6,000–8,000 hours) and avoids costly mid‑rental hydraulic failures, towing bills, and customer complaints.

• Forestry & vegetation clearance – Steep slopes, fallen timber, hidden obstacles. The integrated power control prevents engine stall when sudden load spikes occur, maintaining consistent hydraulic power for attachment operation.

• Road & bridge maintenance – Shoulder repair, guardrail replacement, drainage cleaning, and slope stabilisation. The ability to independently supply travel and work circuits allows the operator to reposition the machine while simultaneously operating the attachment – critical for roadside work with short work windows.

3. Why Choose Hongtengda Parts

At Hongtengda Parts, we have been supplying genuine Japanese hydraulic components for excavators since 2001. We know that a main pump failure on your ZAX60 is not just a parts problem – it stops your entire job site.

When you buy a rebuilt pump, you are buying someone else’s old wear. Here is what a typical “rebuilt” pump does not tell you: The cylinder block and valve plate are already worn. The bearings have fatigue cracks. The swashplate has score marks. No amount of new paint or new seals can fix these problems – because metal does not grow back.

Our AP2D25LV1RS6-829-0 is brand new – not “re‑sealed”. Every component meets Hitachi’s factory tolerances. The cylinder block and valve plate are precision ground, ensuring minimal internal leakage and cooler operation. The bearings are new with correct preload. The swashplate surface is flawless. You install it once – then forget about it.

• 25+ years of industry experience – Founded in 2001, we have sourced genuine pumps for Hitachi, Caterpillar, Komatsu, Kobelco, Volvo, SANY, and more than fifteen other brands.

• 90% stock availability – Hitachi AP2D25LV series pumps are in stock and ready for immediate dispatch from our Guangzhou warehouse.

• 24‑hour shipment – From our Guangzhou hub (Zhucun, one of Asia’s largest construction machinery parts centres) to your forwarder in 1 day.

• Pre‑shipment visual verification – We never ship a pump blind. Before packing, we send you clear, high‑resolution photographs of your actual unit. You approve – we ship.

• One‑stop sourcing for Hitachi hydraulic parts – Beyond main pumps, we supply swing motors, travel motors, control valves, cylinders, and full hydraulic system components.

• Technical support before you buy – Send us your ZAX60 machine serial number and a photo of the old pump’s nameplate. We confirm compatibility within 2 hours.

Send us your Hitachi ZAX60 machine serial number and a photo of the old pump – we will verify fitment and provide a quote within 24 hours.

Critical installation tip for the AP2D25LV1RS6-829-0:
– The case drain line must be clear and unrestricted. A blocked or kinked case drain will cause pressure buildup inside the pump housing, blowing the shaft seal instantly on first startup.
– Before installing the new pump, thoroughly flush the hydraulic system and replace all filters. Any debris left from the failed pump will destroy your new pump within hours.
– Use new O‑rings and sealing washers on all hydraulic connections.
– After installation, run the engine at low idle for 2–3 minutes with the pump in neutral, then slowly cycle each hydraulic function to purge air from the system.
– Check pump alignment with the engine flywheel housing – misalignment will cause premature bearing failure.

Warranty note: Warranty period is 3 to 6 months depending on product details. We do not provide warranty service for genuine original parts. Our value is delivered up front: genuine Japanese components, new‑condition pump, and pre‑shipment visual verification. For warranty‑covered alternatives, ask our sales team.

The main hydraulic pump is the heart of your ZAX60’s hydraulic system. A genuine new AP2D25LV1RS6-829-0 from Hongtengda Parts restores full machine performance – not with worn‑out parts disguised as “rebuilt”, but with factory‑fresh Japanese engineering. Send us your ZAX60 serial number – we will confirm compatibility and provide a quote within 24 hours.