The Wacker Neuson is a genuine OEM Watering System Timer Switch designed for the RD27-100 and RD27-120 hydrostatic vibratory rollers. Sourced directly from Wacker Neuson, this switch is the exact component used in original production, ensuring a direct fit into the drum watering system circuit. It is confirmed compatible across multiple machine configurations within the RD27 series. When you need to restore correct spray timing and protect your asphalt finish quality, this is the correct part to order.
Key Features
- Genuine OEM Electrical Specification — Manufactured to the exact switching resistance and timing parameters required by the RD27 watering system circuit, not a generic substitute.
- Drop-In Connector Compatibility — Replaces the original switch using the existing wiring harness connector, keeping installation straightforward on the RD27-100 and RD27-120.
- RD27 Series Coverage — Fits RD27-100 and RD27-120 hydrostatic vibratory rollers across all listed machine configurations.
- Consistent Spray Cycle Timing — A correctly functioning timer switch maintains the programmed water spray intervals that prevent asphalt from sticking to the drums during compaction passes.
- Fuel and Electrical System Safety — As a control switch within the roller's watering circuit, correct operation prevents unintended continuous water flow that can saturate asphalt surfaces and compromise compaction results.
The watering system timer switch controls the timed activation of the drum spray system on the RD27 hydrostatic vibratory roller. During asphalt compaction, the drum watering system applies a thin, intermittent mist of water to the drum surface to prevent hot asphalt from adhering and building up. The timer switch governs how frequently and for how long the spray nozzles activate — when it fails, the spray may run continuously, run not at all, or cycle erratically, any of which can lead to asphalt pickup on the drum, uneven surface finish, or wasted water.
Part Details
| Part Number | 5000161571 |
|---|---|
| Old Part Number | 0161571 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Watering System Timer Switch |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Hydrostatic Vibratory Roller | RD27-100 | 5000620007, 5000620037 |
| Hydrostatic Vibratory Roller | RD27-120 | 5000009469, 5000620038 |
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.
