Description
Tatan HPV091 9135950 9101528 Hydraulic Pump Assembly Overview
The Tatan HPV091 9135950 9101528 Hydraulic Pump Assembly is a precision dual variable displacement axial piston pump built for heavy-duty earthmoving demands. Manufactured specifically for Hitachi EX200-2, EX200LC-2, and EX200K-2 20-ton excavators, swapping out an internally worn pump with this Tatan complete unit restores system pressure, eliminates compound movement lag, and stops high-temperature oil overheating.
Engineered to exact OEM hydraulic tolerances, this complete assembly integrates dual swashplates, precision control pistons, and negative flow control (NFC) valves into a single ready-to-install unit, matching original engine coupling splines and main valve plumbing perfectly.
Key Attributes & Parameters for Tatan HPV091 Hydraulic Pump
| Product Category | Hydraulic Pump Assembly | Warranty | 1 Year / 12 Months |
| Specific Pump Model | HPV091 / HPV091DW Axial Piston Pump | Brand Name | Tatan |
| Compatible Equipment | Hitachi EX200-2 | EX200LC-2 Excavator | OEM Part Number | 9135950 / 9101528 / HPV091DW |
| Rated Working Pressure | 32 MPa (320 Bar / 4600 PSI) | Control System | Negative Flow Control (NFC) |
| Displacement & RPM | 91 cc/rev x 2 @ 2000-2200 RPM | Drive Spline Shaft | Standard 13-Tooth Precision Spline |
| Machinery Test Report | Provided (100% Bench Flow Tested) | Video Outgoing-Inspection | Provided Before Shipping |
| Pump Design Type | Dual Variable Axial Piston Design | Place of Origin | Guangdong, China |
| Quality Status | 100% Brand New Hydraulic Pump | Packaging | Export Wooden Box Packaging |
Precision Hydraulic Engineering & Brand Coverage
Tatan hydraulic pump assemblies are built with high-hardness rotating groups and alloy steel blocks to ensure maximum volumetric efficiency:
Application Scenarios & Buyer Value
When resolving hydraulic performance failures with our Tatan HPV091 9135950 9101528 Hydraulic Pump Assembly, workshops and equipment contractors benefit directly:
| Application Scenario | Value Delivered to Buyer |
|---|---|
| Hitachi EX200-2 Field Pump Replacement | Complete plug-and-play assembly swap cuts repair downtime by days compared to piecemeal internal overhauls. |
| Hydraulic Service Workshops | Avoids high-risk line-boring and unverified component rebuilding on scored, high-hour pump casings. |
| Earthmoving & Utility Contractors | Restores smooth multi-actuator compound action without hydraulic oil cavitation or thermal power fade under load. |
| Global Heavy Machinery Stockists | Reliable, factory-tested replacement inventory ready for immediate dispatch to international clients. |
Tatan HPV091 9135950 9101528 Hydraulic Pump Diagnostic Guide
Use this technical diagnostic guide to identify hydraulic circuit failures on your Hitachi EX200-2 excavator:
| Hydraulic System Symptom | Technical Root Cause Analysis | Tatan Factory-Grade Solution |
|---|---|---|
| 1. Sluggish multi-function operation & weak digging force | High internal bypass across worn piston shoes and valve plate mating surfaces, reducing system pressure below 250 Bar. | Replace with a complete Tatan HPV091 9135950 9101528 Hydraulic Pump Assembly. |
| 2. Rapid hydraulic oil overheating during standard trenching | Sticking regulator control spools or excessive internal leakage causing continuous high-pressure throttling and oil friction. | Flush oil cooler lines, replace hydraulic return filters, and install a brand new Tatan pump unit. |
| 3. Loud whining noise & severe suction cavitation vibration | Suction hose restriction, collapsed inner filter layers, or air suction through deteriorated pump inlet O-ring seals. | Inspect suction plumbing, renew hydraulic filters, and ensure proper pump case-drain priming prior to startup. |
| 4. Diesel engine lugs or stalls when operating boom or arm | Negative flow control (NFC) pressure sensor failure or pump displacement swashplate sticking at maximum angle under load. | Calibrate NFC control signals or swap to a pre-adjusted Tatan hydraulic pump assembly. |
Transport Packaging & Fast Global Shipping
To ensure 100% damage-free international transport, every Tatan hydraulic pump assembly is sealed with anti-rust port caps, wrapped in heavy waterproof film, and locked inside an export-grade wooden crate.
✈️ Express Air Courier
Partnered with DHL, FedEx, UPS, and TNT for 3-7 day express door-to-door delivery worldwide.
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* Note: Wholesale Reference Price Starts From $300.00. Please contact Gavin for a final customized quote.
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