Description
MSF-340VP 9251681 Travel Motor Assembly Overview
The MSF-340VP 9251681 Travel Motor assembly manufactured by Tatan is a mining-class integrated hydraulic final drive unit combining a heavy dual-displacement axial piston motor and planetary reduction gearbox. Belongs to our Travel Motor Final Drive Assembly classification. Engineered specifically for Hitachi ZX870, ZX870-3, ZX870-5G, and ZX870LCH 87-ton mining excavators, replacing your worn final drive with a Tatan complete assembly eliminates single-side track steering deviation, restores crawling gradeability on steep quarry slopes under 560 kN tractive demand, and cures planetary gear grinding across demanding open-pit mining operations.
Driven directly by the machine’s K3V280 hydraulic pump and routed through the main control valve assembly, this MSF-340VP 9251681 Travel Motor incorporates 20CrNiMo carburized planetary gears, Duo-Cone mechanical face seals, a hydraulic parking brake pack, and a built-in counterbalance valve, ensuring 100% direct bolt-on installation with heavy crawler frames, drive sprockets, and chassis hydraulic lines.
Key Attributes & Technical Parameters for MSF-340VP 9251681 Travel Motor
| Product Category | Travel Motor Final Drive Assembly | Warranty | 1 Year / 12 Months |
| Specific Valve Model | KYB MSF-340VP Dual-Speed Motor + Gearbox | Brand Name | Tatan |
| Compatible Equipment | Hitachi ZX870 | ZX870-3 | ZX870-5G | ZX870LCH | OEM Part Number | 9251681 / YB60000075 / YA60000037 |
| Matched Engine Series | Isuzu 6WG1 / 6WG1-XYSA Diesel Engine (397 kW) | Place of Origin | Guangdong, China |
| Max Relief Pressure | 34.3 MPa (343 bar / 4975 PSI Travel Circuit) | Pilot Shift Pressure | 3.9 MPa (39 bar Shift Line) |
| Spool Precision Spec | Micro-Lapped < 0.003 mm Clearance | Quality Status | 100% Brand New Motor & Gearbox Unit |
| Machinery Test Report | Provided (100% Bench Tested) | Video Outgoing-Inspection | Provided Before Shipping |
| Gear Oil Spec | SAE 85W-140 Heavy-Duty EP Gear Oil | Packaging | Export Wooden Box Packaging |
Mining Excavator Final Drive & Undercarriage Drive Lineup
Tatan supplies factory-built turnkey planetary final drives, track motors, hydraulic travel reduction gearboxes, and Duo-Cone replacement seal groups across global machinery brands:
Supported Excavator Machinery Brands & Final Drive Lineup
In addition to Hitachi mining excavators, Tatan manufactures and supplies replacement travel motors, planetary gearboxes, and track drive components across global equipment brands:
Application Scenarios & Buyer Value
When contractors search to compare Hitachi ZX870 final drive replacement cost and upgrade their undercarriage with our MSF-340VP 9251681 Travel Motor, they secure measurable field reliability and lower cost per hour:
| Application Scenario | Value Delivered to Buyer |
|---|---|
| Hitachi ZX870 Drive Replacement | 1:1 direct bolt-on installation eliminates track wandering on muddy terrain and restores full 4.5 km/h high-gear travel speed under 560 kN drawbar pull. |
| Mining Equipment Repair Workshops | Avoids the complex labor of pressing planetary gear carriers and setting bearing preload shims; drops on as a pre-tested sealed unit. |
| Quarry & Open-Pit Mining Fleets | Carburized planetary gears and heavy Duo-Cone mechanical face seals withstand continuous mud immersion and rocky trail crawling. |
| Heavy Equipment Parts Stockists | High-demand 87-ton final drive inventory packaged in solid export wooden crates ready for immediate global air or ocean dispatch. |
MSF-340VP 9251681 Travel Motor Diagnostic & Troubleshooting Guide
Use this technical guide to diagnose common final drive and planetary reduction gearbox issues on Hitachi ZX870 series mining excavators:
| Hydraulic Fault Symptom | Technical Cause Analysis | Tatan Factory-Grade Solution |
|---|---|---|
| 1. Track pulling to one side during heavy quarry crawling | Travel motor valve plate scoring causing excessive case-drain bypass, or counterbalance spool sticking partially closed on weak side. | Replace with Tatan complete MSF-340VP 9251681 Travel Motor assembly or flush counterbalance valve pilot galleries. |
| 2. Motor fails to shift between Low (Tortoise) and High (Hare) speed | Two-speed shift pilot spool jammed by oil contamination, or swashplate minimum angle control piston seals degraded. | Inspect 3.9 MPa shift pilot pressure at motor port, clean 2-speed selector valve, or replace travel drive unit. |
| 3. Black gear oil leaking from sprocket hub into track chains | Duo-Cone mechanical face floating seal rings worn out or wire/packing rope wrapped around sprocket cutting O-rings. | Stop machine immediately to prevent planetary gear seizure; install fresh Tatan factory-sealed final drive. |
| 4. Loud grinding & clunking sound from track drive hub | Planetary sun gear tooth fracture or needle roller bearing failure caused by operating with low gear oil level under heavy mining shock loads. | Drain gear oil to check for metal debris; replace complete gearbox assembly to prevent main track frame lockup. |
Transport Packaging & Certified Quality Assurance
Heavy-duty undercarriage drives require absolute vibration and contamination protection. Every unit is bolted in solid export timber crates:
✈️ Express Air Courier
Partnered with DHL, FedEx, and UPS for 3-7 day priority delivery worldwide.
🚢 Sea Cargo Freight
LCL and FCL container ocean freight for bulk equipment parts replenishment.
📦 Export Wooden Crates
Solid fumigated timber cases lined with thick shockproof foam to prevent transit damage.
MSF-340VP 9251681 Travel Motor FAQ & Related Categories
* Note: Wholesale Reference Price Starts From $300.00. Please contact Gavin for a final customized quote.
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