Eaton 2PC16A3113-C YD00006505 swing motor for Hitachi ZX19U ZX19U-5A mini excavator
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Component: Hydraulic Swing Motor Device Assembly
Manufacturer Model Number: Eaton 2PC16A3113-C (PC Series Architecture)
Hitachi OEM Part Number: YD00006505
Machine Compatibility:
Hitachi ZX19U Mini Excavator
Hitachi ZX19U-5A Mini Excavator
Condition: Brand New Original / Premium OEM Specification Equivalent
2. Technical Specifications
Type: Disc Valve Hydraulic Motor (Eaton Compact PC Series Platform)
System Output: Factory-engineered displacement, flow profile, and torque limits calibrated precisely for the Hitachi 1.9-ton zero-tail-swing excavator auxiliary swing loop.
Integrated Valve Network: Built-in cross-over relief and hydraulic cushion valves designed to capture rotational energy, preventing structure strain and deceleration judder.
Interface Mount: Precision-machined 4-bolt pilot mounting flange featuring a high-strength spline drive shaft designed to mesh directly into the factory upper-chassis slew gear hub.
3. Critical Installation Requirements
Motor Case Priming (Mandatory)
Before cranking the excavator engine or cycling any joystick functions, manually fill the swing motor casing with fresh, clean hydraulic fluid through its highest case drain port. Running an Eaton disc-valve motor dry—even for a few seconds—will cause instant frictional scoring on the internal wear plates and lead to immediate total pressure bypass.
Verify Case Drain Line Clearance
Thoroughly inspect the low-pressure case drain hose leading back to the hydraulic oil reservoir. Ensure there are no sharp bends, kinks, or inner wall collapses. Any sudden restriction in this circuit creates excessive housing backpressure, which will instantly blow out the motor's main shaft seal.
Gear Pinion & Slew Ring Lubrication
Ensure that the mounting pocket on the Hitachi frame is completely clear of debris, rust, and grit. Apply a generous, uniform coating of premium heavy-duty lithium gear grease to the motor’s output spline shaft pinion and the matching teeth of the upper structure slew ring gear during assembly.
Fluid & Circuit Decontamination
If the previous swing motor failed due to a severe mechanical breakdown, you must completely drain the hydraulic reservoir, flush the main control valve's swing spool circuit lines, and clean out the oil cooler lines. Residual abrasive metallic particles will rapidly score and destroy the newly installed motor.
4. Frequently Asked Questions (FAQ)
Q: Is the Eaton 2PC16A3113-C a direct "drop-in" replacement for Hitachi YD00006505?
A: Yes. Eaton is the standard factory-fit supplier for this class of Hitachi mini excavators. This specific part number perfectly aligns with the original factory bolt pattern, hose port threads, and internal relief pressure thresholds for a seamless swap.
Q: My Hitachi ZX19U structure overtravels and drifts sideways when I work on an incline. Will a new motor fix this?
A: Yes. Over-swinging or drifting when the joysticks are in a neutral position indicates that the internal dual-cushion relief valves or wear seals inside the motor housing have degraded. Replacing the complete device restores exact stopping and holding power.
Q: Does the swing motor arrive fully assembled?
A: Yes. Our premium assemblies are shipped complete with the factory-calibrated valve blocks and internal dynamic groups pre-tested for immediate, plug-and-play installation.
5. Shipping & Logistics
Packaging: Thoroughly preserved with anti-corrosion storage oil, sealed with heavy-duty plastic port plugs to prevent dirt ingress, and packaged securely inside an export-safe protective box.
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.