The Wacker Neuson 5100036790 Hatz Engine is a genuine OEM powerplant designed for the RD7He and RD7H series walk-behind tandem rollers. As a direct OEM replacement, part 5100036790 is sourced and specified to match the original equipment configuration, ensuring the engine integrates correctly with the drive, vibration, and control systems already in your machine. Confirmed fitment spans several RD7He variants including the RD7 Tandem Roller, RD7H, and the RD7He Double Drum roller for the North American market.
Key Features
- OEM-Matched Power Output — Hatz diesel engine built to the exact displacement and output spec used by Wacker Neuson in original production, so drum speed and vibration performance stay within design parameters.
- Direct-Fit Replacement — Engine mounts, shaft interfaces, and ancillary connections align with the existing RD7He chassis without custom fabrication or adapter hardware.
- Broad RD7He Series Coverage — Compatible with the RD7 Tandem Roller, RD7H, Walk-Behind Roller, and RD7He Double Drum (North America) variants across multiple production runs.
- Sustained Compaction Capability — A correctly functioning Hatz engine maintains the hydraulic and vibratory output the RD7He needs to deliver consistent asphalt and soil compaction passes; a worn or failing engine leads to loss of drum frequency and uneven mat density.
- Fuel System Integrity — Genuine OEM sourcing means fuel delivery components, governor settings, and emissions calibration are correct for the application — important for machines operating under EPA Tier requirements.
The engine is the central power source for the RD7He tandem roller, driving both the hydraulic propulsion system and the eccentric shaft assemblies that generate vibratory force in the drums. Without a properly functioning engine, the roller cannot maintain the drum frequency or travel speed needed to achieve specified compaction density on asphalt or soil lifts. When engine output drops — whether from wear, internal failure, or loss of compression — the entire machine becomes unable to perform to spec, making a like-for-like engine replacement the fastest path to restoring full productivity.
Part Details
| Part Number | 5100036790 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Hatz Engine |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD7 Tandem Roller | RD7He | 5100017193, 5100017194, 5200015241, 5200015244, 5100038031, 5100018451 |
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.
