The Wacker Neuson 5100011986 is a genuine OEM Directional Valve designed for the RD-series tandem roller lineup, covering a wide range of models including the RD18, RD24, RD27, RD28, RD40, and RD45 families. As a direct factory replacement, part number 5100011986 is built to the same specifications as the original component installed at the factory. Compatibility spans walk-behind and ride-on articulated tandem rollers used in asphalt and soil compaction applications across multiple configuration variants including open-drum, combination, and DPF-equipped models.
Key Features
- OEM-Spec Hydraulic Porting: — Manufactured to original flow-path and pressure ratings, ensuring the valve routes hydraulic fluid at the correct volume and direction for smooth propulsion and vibration control.
- Drop-In Replacement: — Matches the original valve body dimensions, port threading, and mounting interface so it installs directly into the existing hydraulic circuit without rework.
- Broad RD-Series Coverage: — Fits RD18, RD24, RD27, RD28, RD40, and RD45 tandem rollers across open-drum, combination, and DPF configurations, including US-market and SE-designation variants.
- Sustained Directional Control: — A properly functioning directional valve keeps forward, reverse, and vibration circuits switching cleanly; a worn or stuck valve causes sluggish response, erratic drum behavior, or complete loss of drive.
- Hydraulic System Integrity: — Correct valve seating prevents internal bypass and pressure bleed-off that would otherwise cause overheating and accelerated wear to downstream hydraulic components.
A directional valve controls the flow path of hydraulic fluid within the roller's hydraulic system, determining which actuators or motors receive pressurized fluid and in what direction. On a tandem roller, this governs critical functions such as forward and reverse travel and drum vibration engagement. When the directional valve begins to fail — through seal degradation, spool wear, or contamination — operators may notice delayed or inconsistent machine response, loss of drive in one direction, or vibration circuits that fail to engage, all of which directly compromise compaction output and pass quality.
Part Details
| Part Number | 5100011986 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Directional Valve |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD28-120c DPF | RD28-120c DPF | 5100047392 |
| RD45-140c | RD45-140c | 5100047385 |
| RD18-80 | RD18-80 | 5100047360, 5100055774, 5100011382 |
| RD24-100 | RD24-100 | 5100047374, 5100011385 |
| Vibration Roller | RD18-100 SE | 5100044989 |
| RD24-100 Tandem Roller | RD24-100 US | 5100021755 |
| RD40-130 Tandem Roller | RD40-130 US | 5100021801 |
| RD28-120 DPF | RD28-120 DPF | 5100047390 |
| RD28-120o | RD28-120o | 5100047379 |
| RD40-130.3 | RD40-130.3 | 5100047395 |
| RD24-100o DPF | RD24-100o DPF | 5100047393 |
| RD40-130 C Tandem Roller | RD40-130 C | 5100011393 |
| RD24-100 DPF | RD24-100 DPF | 5100047380 |
| RD24-100c DPF | RD24-100c DPF | 5100047391 |
| RD18-100 Tandem Roller | RD18-100 US | 5100027573 |
| RD24-100o | RD24-100o | 5100047378 |
| RD45-140o.3 | RD45-140o.3 | 5100047400 |
| RD40-130c.3 | RD40-130c.3 | 5100047397 |
| RD45-140 | RD45-140 | 5100047383, 5100011392 |
| RD18-80 Tandem Roller | RD18-80 US | 5100027572 |
| RD45-140o | RD45-140o | 5100047387 |
| Vibration Roller | RD18-100c 3 | 5100047363 |
| RD24-100c | RD24-100c | 5100047376 |
| RD45-140c DPF | RD45-140c DPF | 5100055780 |
| RD27-120 O Tandem Roller | RD27-120 O | 5100011390 |
| RD27-120 C Tandem Roller | RD27-120 C | 5100011388 |
| RD45-140 O Tandem Roller | RD45-140 O | 5100011396 |
| RD27-120c | RD27-120c.3 | 5100047371 |
| RD24-100o.3 | RD24-100o.3 | 5100047372 |
| RD28-120 | RD28-120 | 5100047375 |
| RD28-120 Tandem Roller | RD28-120 US | 5100021756 |
| RD45-140.3 | RD45-140.3 | 5100047396 |
| RD28-120c | RD28-120c | 5100047377 |
| RD27-120 | RD 27-120.3 | 5100032198 |
| RD18-100c | RD18-100c | 5100055776, 5100047362 |
| RD24-100 O Tandem Roller | RD24-100 O | 5100011389 |
| RD45-140 C Tandem Roller | RD45-140 C | 5100011394 |
| RD24-100 O Tandem Roller | RD24-100O US | 5100021759 |
| RD40-130 DPF | RD40-130 DPF | 5100055777 |
| RD40-130 C Tandem Roller | RD40-130C US | 5100021803 |
| RD45-140 Tandem Roller | RD45-140 US | 5100021802 |
| RD18-80.3 | RD18-80.3 | 5100055946 |
| Vibration Roller | RD18-80 SE | 5100044988 |
| RD27-120o | RD27-120o.3 | 5100047373 |
| RD18-100 | RD18-100 | 5100055775, 5100011383, 5100047361 |
| RD45-140 O Tandem Roller | RD45-140O US | 5100021806 |
| RD40-130o.3 | RD40-130o.3 | 5100047399 |
| RD18-100c.3 | RD18-100c.3 | 5100055948 |
| RD45-140 C Tandem Roller | RD45-140C US | 5100021804 |
| RD24-100 C Tandem Rollers | RD24-100 C | 5100011387 |
| RD28-120 C Tandem Roller | RD28-120C US | 5100021758 |
| RD40-130 O | RD40-130 O | 5100011395 |
| RD40-130 O Tandem Roller | RD40-130O US | 5100021805 |
| RD40-130c | RD40-130c | 5100047384 |
| RD18 | RD18-100.3 | 5100055947 |
| RD18-100 C Tandem Roller | RD18-100 C US | 5100027574 |
| RD 24-100.3 | RD 24-100.3 | 5100032197 |
| RD40-130 Tandem Roller | RD40-130 | 5100011391, 5100047382 |
| RD45-140o DPF | RD45-140o DPF | 5100055782 |
| RD45-140 DPF | RD45-140 DPF | 5100055778 |
| RD18-100 C Tandem Roller | RD18-100 C | 5100011384 |
| RD28-120 O Tandem Roller | RD28-120O US | 5100021800 |
| RD40-130c DPF | RD40-130c DPF | 5100055779 |
| RD24-100c.3 | RD24-100c.3 | 5100047370 |
| RD24-100 C Tandem Roller | RD24-100C US | 5100021757 |
| RD40-130o DPF | RD40-130o DPF | 5100055781 |
| RD45-140c.3 | RD45-140c.3 | 5100047398 |
| RD28-120o DPF | RD28-120o DPF | 5100047394 |
| RD40-130o | RD40-130o | 5100047386 |
| RD27-120 Tandem Roller | RD27-120 | 5100011386 |
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.
