The Wacker Neuson 5200025090 is a genuine OEM Pump Timer Module designed for the RD27-100 and RD27-120 series tandem rollers, including Pro, Basic, and T4F configurations. As a direct factory replacement, the 5200025090 ensures the hydraulic pump control system operates within the precise timing parameters required by these hydrostatic vibratory rollers. Sourced directly through Wacker Neuson's authorized parts network, this module is the correct specification component for both the RD27-100 and RD27-120 model lines across multiple production builds.
Key Features
- OEM-Matched Timing Calibration — Manufactured to exact factory control specifications, ensuring the pump timer module delivers the correct signal output and switching intervals for the hydrostatic drive system on RD27 series rollers.
- Drop-In Electrical Replacement — Designed to connect directly to the existing wiring harness and mounting points on RD27-100 and RD27-120 machines, requiring no splicing or harness modification.
- Broad RD27 Series Coverage — Fits a wide range of RD27-100 and RD27-120 build variants, including Pro, Basic, and T4F Tier 4 Final emission-compliant configurations across multiple production machine numbers.
- Protects Hydraulic Pump Longevity — A correctly functioning pump timer module regulates pump engagement timing, preventing premature wear or cavitation damage to the hydrostatic drive components caused by incorrect sequencing.
- Critical Electrical System Integrity — On hydrostatic roller platforms, a failed or out-of-spec timer module can cause erratic pump behavior or drive system faults; replacing with a genuine OEM unit restores correct system control and protects downstream hydraulic components.
The pump timer module is an electronic control component that governs the timing and sequencing of hydraulic pump engagement on the RD27 tandem roller's hydrostatic drive system. It sends timed electrical signals that coordinate when the pump activates and at what intervals, ensuring smooth, controlled power delivery to the drum drives. When this module fails or drifts out of specification, operators may experience erratic roller movement, drive system faults, or complete loss of propulsion, making timely replacement essential to keeping the machine compacting accurately and safely.
Part Details
| Part Number | 5200025090 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Pump Timer Module |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD27-120 | RD27-120 | 5200014923, 5200014922, 5200014869, 5200005879, 5200023555, 5200024441, 5200023557, 5200005877, 5200021389 |
| Hydrostatic Vibratory Roller | RD27-100 | 5200014868, 5200005878, 5200023554, 5200023556, 5200005876, 5200021387 |
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.
