Description
MAG-85VP 227-6109 Travel Motor Assembly Overview
The MAG-85VP 227-6109 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 Caterpillar 315D, 315D L, and 318D 15~17 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 earthmoving applications.
Operating under direct pressure flow from the excavator’s SBS80 hydraulic pump and directed via the 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-85VP 227-6109 Travel Motor
| Product Category | Travel Motor Final Drive Assembly | Warranty | 1 Year / 12 Months |
| Specific Valve Model | Caterpillar MAG-85VP Complete Final Drive | Brand Name | Tatan |
| Compatible Equipment | Caterpillar 315D | 315D L Excavator | OEM Part Number | 227-6109 / 204-2947 / 287-5157 |
| Matched Engine Series | Cat C4.2 ACERT Turbo Diesel (86 kW) | Place of Origin | Guangdong, China |
| Max Relief Pressure | 35.0 MPa (350 bar / 5076 PSI Travel Circuit) | Pilot Control Pressure | 4.0 MPa (40 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 Caterpillar, Tatan manufactures replacement travel motors, planetary gearboxes, and track drive parts for major excavator brands:
Medium Excavator Undercarriage Powertrain & High-Tractive Final Drive Standards
Delivering up to 150 kN of tractive drawbar pull on 15~17 ton medium crawler excavators 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 fleets:
🚜 High Climbing Torque
Dual-speed variable swashplates deliver instantaneous maximum displacement on 35-degree muddy 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 trench mud, protecting gear oil.
Application Scenarios & Buyer Value
When upgrading or replacing your 15-ton excavator undercarriage drive with our MAG-85VP 227-6109 Travel Motor, buyers achieve maximum operational uptime and flow control:
| Application Scenario | Value Delivered to Buyer |
|---|---|
| Caterpillar 315D 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. |
| Civil & Municipal Fleet Operations | Reinforced carburized gears and heavy Duo-Cone seals withstand trench debris abrasion and continuous 35.0 MPa track stall loads. |
| Heavy Equipment Parts Stockists | Fast-moving, high-demand 15-ton final drive inventory ready for immediate shipment to minimize customer downtime. |
MAG-85VP 227-6109 Travel Motor OEM Diagnostic & Troubleshooting Guide
Use this OEM manual hydraulic diagnostic guide to troubleshoot travel motor and gearbox symptoms on your Caterpillar 315D 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 227-6109 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 4.0 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 under 150 kN drawbar loads. | 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 Cat 315D travel motor undergoes anti-rust oiling, waterproof plastic sealing, and solid export wooden box packaging:
MAG-85VP 227-6109 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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