The Wacker Neuson 5100031841 is a genuine OEM Cotter designed for the RD7Ye, RD7Yeh, RD7Yehf, RD7Yehfb, and RD10Yehf series walk-behind tandem rollers. As a factory-sourced component, this Cotter is manufactured to the exact tolerances required for proper retention and secure fastening within the roller assembly. It is a direct-fit replacement for the models listed, including HRC and LRC configurations, ensuring correct installation without guesswork. Keep part number 5100031841 on hand as a service spare to stay ahead of routine maintenance cycles.
Key Features
- Genuine OEM Retention Integrity — Sourced directly from Wacker Neuson, this Cotter meets the exact shear and dimensional specifications required for secure pin retention in tandem roller drivetrains and linkage assemblies.
- Drop-In Installation — Engineered to the original pin bore diameter and leg spread, this Cotter seats and spreads exactly as the factory component, requiring no fitting or rework during installation.
- Broad RD7 and RD10 Series Coverage — Confirmed fitment across RD7Ye, RD7Yeh, RD7Yehf, RD7Yehfb, and RD10Yehf models in both HRC and LRC configurations.
- Prevents Fastener Migration — A correctly installed Cotter locks clevis pins and shaft fasteners in place, preventing lateral movement that can lead to component misalignment or accelerated wear on adjacent parts.
- Safety-Critical Locking Component — Cotters secure load-bearing pins in steering, drum, and linkage systems. A missing or deformed Cotter can allow pins to walk free under vibration, creating an unsafe operating condition on the roller.
A cotter is a small split-pin fastener inserted through a drilled hole in a shaft or bolt to lock a clevis pin, axle pin, or castellated nut firmly in position. On a walk-behind tandem roller like the RD7 and RD10 series, cotters are used throughout steering linkages, drum shaft assemblies, and articulation joints where vibration is constant and fastener retention is critical. When a cotter becomes bent, corroded, or breaks, the pin it secures can shift or eject under load, leading to loose components, abnormal wear, or a loss of mechanical control. Replacing a worn or damaged cotter promptly with the correct OEM part restores the locking integrity of the assembly and keeps the machine operating safely.
Part Details
| Part Number | 5100031841 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Cotter |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD7Ye Tandem Roller | RD7Ye | 5100027116, 5100027117, 5100038032, 5100048340 |
| RD7Yehf HRC | RD7Yehf HRC | 5100006337, 5100006341 |
| RD7Yehf LRC | RD7Yehf LRC | 5100006340 |
| RD10Yehf LRC | RD10Yehf LRC | 5100070502 |
| RD7Yeh HRC | RD7Yeh HRC | 5100006467, 5100006336 |
| RD7Yehfb HRC | RD7Yehfb HRC | 5100006346 |
| RD7Yehfb LRC | RD7Yehfb LRC | 5100006345 |
| RD7Yeh LRC | RD7Yeh LRC | 5100006335 |
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.
