ناقل الحركة النهائي لـ حفارة صغيرة Pel-Job EB 406

1. Product Identification
Component: Complete Final Drive Assembly (Hydraulic Travel Motor with Planetary Gearbox)

Machine Compatibility: Pel-Job EB 406 (EB406) Mini Excavator

Condition: Premium OEM-Specification Equivalent / Aftermarket New (Complete Drop-In Unit)

System Function: Converts high-pressure hydraulic fluid flow into high-torque rotation to drive the track sprocket and undercarriage chain on 3.5 to 4.0-ton mini excavators.

2. Technical Specifications
Motor Type: Integrated Variable Displacement Axial Piston Travel Motor

Reducer Type: Multi-Stage Planetary Gear Reduction System

Performance Parameters: Gear ratios and flow profiles calibrated to match the original main hydraulic pump output and operating pressures of the Pel-Job EB 406 series.

Integrated Control Network: Includes integrated multi-disc wet dynamic parking brake, automatic high/low speed shift, and counter-balance/anti-cavitation valves.

Mounting Interface: Precision-machined drive sprocket bolt circle and track frame flange engineered specifically for a direct bolt-on fit without machine modifications.

3. Critical Installation Requirements
Travel Motor Housing Priming (Mandatory)
Before starting the machine or engaging travel, pre-fill the axial piston travel motor casing with clean, fresh hydraulic fluid through the highest case drain port. Running an axial piston motor dry—even for a few seconds—will cause friction scoring on the swash plate and piston slippers, leading to immediate pressure loss.

Verify Case Drain Line Backpressure
Inspect the low-pressure case drain hose leading back to the main hydraulic oil reservoir. Ensure there are no kinks, sharp bends, or line blockages. High case drain backpressure will blow out the main hub shaft seal and allow hydraulic oil to contaminate the planetary gearbox lubricant.

Gearbox Oil Level & Break-In
Verify that the planetary reduction gear hub is filled to the center level plug with high-pressure gear oil (typically SAE 80W-90 or SAE 90). Perform an initial gear oil drain and refill after the first 50 operating break-in hours.

Hydraulic Circuit Decontamination
If replacing a unit that suffered catastrophic mechanical breakdown, thoroughly drain and flush the main hydraulic reservoir, clean oil cooler lines, and replace all main return and suction filter elements to clear metallic debris.

4. Frequently Asked Questions (FAQ)
Q: Will this final drive bolt directly onto my Pel-Job EB 406 without modification?
A: Yes. This unit is built to exact OEM dimensions, matching the original sprocket bolt circle, track frame mounting flange, and hydraulic hose port threads for direct drop-in replacement.

Q: My Pel-Job EB 406 tracks slowly or strays to one side when traveling. Is the final drive motor failing?
A: Slow travel or pulling to one side generally indicates worn piston slippers or scored valve plates inside the hydraulic motor, or worn planetary gears inside the hub reducer. Replacing the final drive restores equal tracking power and speed to both sides.

Q: Does the unit arrive complete with both the motor and planetary gearbox?
A: Yes. The unit is delivered fully intact as a complete assembly, including the hydraulic travel motor, planetary gearbox hub, and pre-calibrated brake valve block.

5. Shipping & Logistics
Packaging: Preserved with rust-inhibiting anti-corrosion storage oil, fitted with plastic port plugs, and bolted securely inside an export-safe wooden crate.

Transit Time: Global express air freight via DHL/FedEx/UPS typically delivers within 3 to 7 business days directly to your workshop or job site.