Description
GM38VB 349-4330 Travel Motor Assembly Overview
The GM38VB 349-4330 Travel Motor Assembly manufactured by Tatan is an integrated hydraulic final drive unit consisting of an axial piston motor and a heavy two-stage planetary reduction gearbox. Built in accordance with ISO fluid power standards and heavy construction machinery specifications, replacing a failing drive with this complete GM38VB 349-4330 Travel Motor Assembly unit eliminates unilateral track steering drift, two-speed shift failure, and gear hub oil leaks on Caterpillar 329D, 329D L, and 329D LN 30-ton excavators.
Constructed strictly to original Caterpillar OEM dimensional standards, this unit comes pre-assembled with planetary gear carriers, hardened sun gears, heavy-duty Duo-Cone floating face seals, and counterbalance valves, ensuring direct bolt-on fitment with your original drive sprockets and track roller frames.
Key Attributes & Parameters for GM38VB 349-4330 Travel Motor Assembly
| Product Category | Excavator Final Drive Travel Motor | Warranty | 1 Year / 12 Months |
| Specific Motor Model | Nabtesco / Kayaba GM38VB Heavy Final Drive | Brand Name | Tatan |
| Compatible Equipment | Caterpillar 329D | 329D L Excavator | OEM Part Number | 349-4330 / 296-6139 / 322-8735 |
| Rated Working Pressure | 34.3 MPa (343 Bar / 4975 PSI) | Braking System | Hydraulic Counterbalance Valve & Park Brake |
| Reduction Mechanism | 2-Stage Heavy Planetary Gear Reduction (~55:1) | Speed Modes | Automatic High / Low Dual Speed Shift |
| Machinery Test Report | Provided (Bench Torque Tested) | Video Outgoing-Inspection | Provided Before Shipping |
| Seal Type | Heavy-Duty Floating Duo-Cone Seals | Place of Origin | Guangdong, China |
| Quality Status | Brand New Final Drive Assembly | Packaging | Export Wooden Box Packaging |
Supported Machinery Brands & Undercarriage Coverage
In addition to Caterpillar, Tatan manufactures replacement complete travel motors, final drives, and undercarriage components for leading machinery brands:
Application Scenarios & Buyer Value
When resolving track drive and planetary gearbox mechanical failures with our GM38VB 349-4330 Travel Motor Assembly, workshops and equipment owners eliminate job-site downtime:
| Application Scenario | Value Delivered to Buyer |
|---|---|
| Caterpillar 329D Track Motor Swap | Swapping to a complete GM38VB 349-4330 Travel Motor Assembly cuts repair downtime by up to 80% compared to internal planetary rebuilds in the field. |
| Undercarriage Repair Workshops | Avoids the catastrophic secondary damage of reusing fatigued sun gears or contaminated reduction gearboxes under heavy 30-ton track tensions. |
| Quarry & Earthmoving Contractors | Restores balanced 52,000 N·m tractive drawbar pull without unilateral steering pull when climbing rough rock grades. |
| Export Heavy Equipment Stockists | Ready-to-ship replacement final drives supporting high-population Caterpillar 329D series machines globally. |
GM38VB 349-4330 Travel Motor Assembly OEM Diagnostic Guide
Use this technical diagnostic guide to identify final drive failures on your Caterpillar 329D excavator:
| Drive Symptom | Technical Cause Analysis | Tatan Factory-Grade Solution |
|---|---|---|
| 1. Machine drifts to one side during straight travel | Internal high-pressure bypass across worn piston shoes and valve plate in the weaker motor, dropping pressure below 26 MPa under load. | Replace with a complete factory-tested GM38VB 349-4330 Travel Motor Assembly. |
| 2. Motor fails to shift into high-speed travel mode | Two-speed pilot changeover spool stuck due to hydraulic contamination or degraded pilot shift seals preventing swashplate angle reduction. | Inspect 2-speed pilot solenoid signal (3.9 MPa), flush pilot lines, or install a pre-adjusted replacement motor unit. |
| 3. Heavy gear oil leaking from sprocket hub face | Floating Duo-Cone metal seal ring cracked or mud pack intrusion compromising the nitrile elastomer support rings under quarry conditions. | Drain contaminated gear oil, inspect planetary bearings, and replace with a brand-new sealed final drive unit. |
| 4. Loud metallic clicking under heavy drawbar pull | Spalled needle roller bearings on planetary carrier or fractured gear teeth on the first-stage sun gear shaft. | Stop operation immediately to prevent ring gear housing rupture; install a complete new planetary gearbox unit. |
Transport Packaging & Fast Global Shipping
To ensure damage-free international transport, every Tatan final drive assembly is pre-filled with preservation fluid, fitted with heavy steel port plugs, sealed in barrier film, and strapped 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.
🚢 Sea Cargo Freight
LCL and FCL ocean container shipping for heavy final drives and bulk fleet replenishment.
📦 Export Wooden Cases
Fumigated solid wooden boxes with custom high-density foam inserts to prevent shipping shock.
Quality Control & International Certificates
Tatan hydraulic and undercarriage components are manufactured under ISO 9001 certified quality control systems and strictly comply with international CE safety standards.
GM38VB 349-4330 Travel Motor Assembly FAQ & Related Categories
* Note: Wholesale Reference Price Starts From $300.00. Please contact Gavin for a final customized quote.
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