The Wacker Neuson is a genuine OEM Adjustable Charge Relief Valve designed for the RD27-100 and RD27-120 tandem roller series. Sourced directly from Wacker Neuson, this part meets the exact specifications required by the hydrostatic drive system in these ride-on rollers. It fits across the full RD27 lineup, including RD27 Pro, RD27 Basic, and T4F-compliant configurations. Verify your machine number against the fitment list to confirm compatibility before ordering.
Key Features
- Genuine OEM Pressure Calibration — Factory-set adjustability ensures the hydrostatic circuit is protected at the correct charge pressure threshold for RD27-series drive systems.
- Direct-Fit Hydraulic Connection — Engineered to thread directly into the existing hydraulic circuit port with no rework to lines or fittings.
- Broad RD27 Series Coverage — Compatible with multiple RD27-100 and RD27-120 configurations, including Pro, Basic, and T4F emissions-compliant variants.
- Protects the Hydrostatic Drive — A correctly functioning charge relief valve keeps hydraulic pressure within operating range; a failed or out-of-spec valve can cause drive sluggishness, overheating, or pump damage.
- Adjustable Design for Field Service — The adjustable format allows technicians to fine-tune relief pressure during maintenance without replacing the entire valve assembly.
- Fuel System Safety Compliance — Maintaining correct hydraulic charge pressure is critical to safe, controlled roller operation on grade; using an OEM-spec valve preserves the system's designed pressure limits.
The charge relief valve regulates hydraulic pressure within the hydrostatic drive circuit of a tandem roller. It acts as a pressure safety gate — when charge pressure exceeds the set threshold, the valve opens to release excess pressure and protect the hydraulic pump and motor from overload. On RD27-series rollers, the hydrostatic drive controls both propulsion and drum rotation, so a valve that is stuck, worn, or set to the wrong pressure can result in loss of drive response, erratic drum behavior, or accelerated wear on expensive hydraulic components. Replacing a faulty charge relief valve with the correct OEM part restores proper circuit pressure and protects the entire hydrostatic system.
Part Details
| Part Number | 5200012663 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Adjustable Charge Relief Valve |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Hydrostatic Vibratory Roller | RD27-100 | 5200005878, 5200014868, 5200023554, 5200023556, 5200005876, 5200021387 |
| Hydrostatic Vibratory Roller | RD27-120 | 5200005879, 5200014869, 5200014922, 5200014923, 5200023555, 5200023557, 5200024441, 5200005877, 5200021389 |
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.
