Wacker Neuson 5000078936 Case Drain Tube Exciter

The Wacker Neuson Case Drain Tube Exciter is a genuine OEM component designed for the RD880V Double Drum Vibratory Roller. Sourced directly from Wacker Neuson, this part matches the original specification installed at the factory, ensuring a correct fit within the exciter's hydraulic circuit. If your roller is leaking from the case drain line or showing signs of hydraulic contamination in the exciter system, replacing this tube with the restores the integrity of the circuit and protects the exciter drive components.

Key Features

• Hydraulic-Circuit Integrity: — Manufactured to the exact tube geometry and connector specification of the original, ensuring a leak-free seal in the exciter case drain circuit.
• Genuine OEM Part: — Supplied by Wacker Neuson, this is the same 5000078936 tube installed during original production — no guesswork on compatibility.
• Direct Fitment for the RD880V: — Confirmed fit for the RD880V Double Drum Vibratory Roller; routes and connects to the exciter housing exactly as the original.
• Exciter Protection: — A functioning case drain tube safely routes low-pressure return oil away from the exciter motor; a failed or blocked tube can cause catastrophic exciter damage from backpressure buildup.
• Hydraulic System Safety: — Case drain line failures can result in uncontrolled fluid release under pressure; replacing a worn or damaged tube promptly keeps the hydraulic system operating safely and within design parameters.

The case drain tube on the exciter system carries low-pressure return oil from the exciter motor's case back to the hydraulic reservoir, preventing internal pressure from building up around the motor's shaft seals and internal components. Without a properly routed and intact drain tube, back pressure can overwhelm the exciter motor's seals, leading to leaks, loss of vibration output, and eventual motor failure. Keeping this tube in good condition is essential to maintaining full compaction performance and protecting one of the most expensive components on the roller.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.