Description
MAG-170VP 20Y-27-00020 Travel Motor Assembly Overview
The MAG-170VP 20Y-27-00020 Travel Motor assembly manufactured by Tatan is a heavy-duty integrated hydraulic undercarriage drive unit combining a dual-speed variable displacement axial piston motor and planetary reduction gearbox. Belongs to our Travel Motor Final Drive Assembly classification. Engineered specifically for Komatsu PC240-8, PC240LC-8, and PC240NLC-8 24-ton excavators, replacing your worn travel drive with a Tatan complete assembly eliminates track steering deviation, restores climbing tractive torque on steep grades, and cures planetary gear grinding across demanding quarry and excavation applications.
Operating under direct pressure flow from the excavator’s HPV95 hydraulic pump and directed via the PC240-8 main control valve, this travel drive 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 track frames, drive sprockets, and chassis hydraulic hard lines.
Key Attributes & Technical Parameters for MAG-170VP 20Y-27-00020 Travel Motor
| Product Category | Travel Motor Final Drive Assembly | Warranty | 1 Year / 12 Months |
| Specific Valve Model | Komatsu MAG-170VP Complete Final Drive | Brand Name | Tatan |
| Compatible Equipment | Komatsu PC240-8 | PC240LC-8 Excavator | OEM Part Number | 20Y-27-00020 / 20Y-27-00021 |
| Matched Engine Series | Komatsu SAA6D107E-1 Common Rail Diesel | Place of Origin | Guangdong, China |
| Max Relief Pressure | 34.3 – 37.3 MPa (343 – 373 bar) | Pilot Control Pressure | 3.9 MPa (39 bar Shift Pressure) |
| Spool Precision Spec | Micro-Lapped < 0.003 mm Clearance | Quality Status | 100% Brand New Motor & Gearbox |
| Machinery Test Report | Provided (100% Bench Tested) | Video Outgoing-Inspection | Provided Before Shipping |
| Gear Oil Spec | SAE 80W-90 / SAE 85W-140 EP | Packaging | Export Wooden Box Packaging |
Supported Excavator Machinery Brands & Final Drive Coverage
In addition to Komatsu, Tatan manufactures replacement travel motors, planetary gearboxes, and track drive parts for major excavator brands:
Heavy Earthmoving Undercarriage Powertrain & Final Drive Standards
Sustaining over 206 kN of tractive drawbar pull on heavy clay, rock quarries, and steep jobsite inclines requires industrial-grade metallurgical hardening. Tatan supplies certified travel final drives built with carburized 20CrNiMo planetary reduction stages and high-durability mechanical face seals across global earthmoving machinery:
🚜 High Climbing Torque
Dual-speed variable swashplates deliver instantaneous maximum displacement on 35-degree climbing grades.
⚙️ Carburized Sun Gears
Case-hardened 20CrNiMo planetary gears resist sudden impact tooth shearing under track chain stalling loads.
🛡️ Zero Slurry Ingress
Heavy-alloy Duo-Cone floating seal packs lock out abrasive sand, slurry, and demolition wires, protecting gear oil.
Application Scenarios & Buyer Value
When upgrading or replacing your 24-ton excavator undercarriage drive with our MAG-170VP 20Y-27-00020 Travel Motor, buyers achieve maximum operational uptime and flow control:
| Application Scenario | Value Delivered to Buyer |
|---|---|
| Komatsu PC240-8 Drive Replacement | 1:1 direct bolt-on installation eliminates track wandering on muddy terrain and restores full 5.5 km/h high-gear travel speed. |
| Hydraulic Overhaul Workshops | Avoids the complex labor of pressing planetary gear carriers and setting preload shims; drops on as a sealed unit. |
| Mining & Quarry Fleet Operations | Reinforced carburized gears and heavy Duo-Cone seals withstand rock debris abrasion and continuous 37.3 MPa track stall loads. |
| Heavy Equipment Parts Stockists | Fast-moving, high-demand 24-ton final drive inventory ready for immediate shipment to minimize customer downtime. |
MAG-170VP 20Y-27-00020 Travel Motor OEM Diagnostic & Troubleshooting Guide
Use this OEM manual hydraulic diagnostic guide to troubleshoot travel motor and gearbox symptoms on your Komatsu PC240-8 excavator:
| Hydraulic Symptom | Technical Cause Analysis | Tatan Factory-Grade Solution |
|---|---|---|
| 1. Machine tracks to one side (单边跑偏) during straight travel | Travel motor valve plate scoring causing excessive case-drain bypass, or counterbalance spool sticking partially closed on weak side. | Replace with Tatan 20Y-27-00020 complete final drive assembly or flush counterbalance valve passages. |
| 2. Motor fails to shift between Low (Tortoise) and High (Hare) speed | Two-speed shift pilot spool jammed by dirty oil, 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 links | 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. | Drain gear oil to check for metal debris; replace complete gearbox assembly to prevent main frame lockup. |
Transport Packaging & Fast Global Shipping
To ensure 100% damage-free international transport, every Tatan PC240-8 travel motor undergoes anti-rust oiling, waterproof plastic sealing, and solid export wooden box packaging:
MAG-170VP 20Y-27-00020 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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