The Wacker Neuson Engine Stop Diode Assembly is a genuine OEM electrical component designed for the RD11AEC and RD11A hydrostatic double drum vibratory rollers. As a direct OEM replacement, this part is sourced to the exact specification used in original production, ensuring correct electrical behavior within the engine stop circuit. This diode assembly is the right call when troubleshooting or restoring engine shutdown function on RD11-series tandem rollers.
Key Features
- Genuine OEM Electrical Specification — Manufactured to the correct forward-voltage and reverse-blocking characteristics required by the RD11 engine stop circuit, so the diode performs exactly as the system expects.
- Drop-In Replacement — Matches the original connector and orientation for the RD11AEC and RD11A, allowing the assembly to seat into the existing wiring harness without rework.
- RD11-Series Compatibility — Confirmed fit for the RD11AEC and RD11A hydrostatic double drum vibratory rollers.
- Protects Engine Stop Circuit Integrity — A functioning diode assembly prevents back-EMF from disrupting the shutdown signal, keeping the stop circuit responsive and predictable under load.
- Critical Safety Function — The engine stop circuit is a key safety system; using a correctly rated OEM diode assembly ensures the shutdown path operates as designed and does not fail to open when commanded.
The engine stop diode assembly controls the direction of current flow within the engine shutdown circuit of the roller. It allows the stop signal to travel in the intended direction while blocking any reverse current that could interfere with the control electronics or prevent a clean engine shutdown. When this diode fails — either shorted or open — the result is typically an engine that will not shut down on command, or erratic behavior in the stop circuit, both of which create unsafe operating conditions on a compaction machine.
Part Details
| Part Number | 5000151940 |
|---|---|
| Old Part Number | 0151940 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Engine Stop Diode Assembly |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Hydrostatic Double Drum Vibrat ory Roller | RD11AEC | 5000007695 |
| Hydrostatic Double Drum Vibrat ory Roller | RD11A | 5000007693 |
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.
