The Wacker Neuson Pinion Gear is a genuine OEM component designed for the PDT and PDI series diaphragm trash pumps, covering both 50mm/2-inch and 75mm/3-inch configurations. Sourced directly from Wacker Neuson, this part meets the exact tolerances required to keep the pump drive mechanism operating correctly across the full range of compatible models. Verified fitment spans the PDT2, PDT2A, PDT2B, PDT3, PDT3A, PDI2, PDI2A, PDI3, and PDI3A series — making a widely applicable stock item for service fleets and pump repair shops alike.
Key Features
- Genuine OEM Gear Tolerancing — Machined to the exact tooth profile and pitch specification required by the Wacker Neuson drive train, ensuring correct mesh and load transfer within the pump mechanism.
- Direct Drop-In Replacement — Matches the original mounting interface and gear geometry, allowing straightforward installation without modification to adjacent components.
- Broad PDT and PDI Series Compatibility — Fits 2-inch and 3-inch diaphragm trash pump models across the PDT2, PDT2A, PDT2B, PDT3, PDT3A, PDI2, PDI2A, PDI3, and PDI3A series.
- Sustained Pumping Output — A correctly seated pinion gear maintains consistent stroke timing in the diaphragm drive; wear or failure in this gear leads to erratic flow, reduced output, and accelerated wear on surrounding drive components.
- OEM Part Number Confidence — Part number 5000089224 cross-references directly to the original Wacker Neuson bill of materials, eliminating guesswork when ordering for multiple pump variants.
The pinion gear is a core element of the mechanical drive assembly that converts rotational engine power into the reciprocating motion needed to actuate the pump's diaphragm. As the pinion meshes with the drive gear, it sets the stroke rate and force applied to the diaphragm — directly controlling how efficiently the pump moves water and solids. When this gear wears, chips, or loses proper mesh, the diaphragm stroke becomes inconsistent, resulting in reduced flow rates, increased vibration, and potential damage to the connecting rod and diaphragm assembly.
Part Details
| Part Number | 5000089224 |
|---|---|
| Old Part Number | 0089224 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Pinion Gear |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 50mm/2in Diaphragm Trash Pump | PDT2A | 5000007610, 5000007611 |
| 75mm/3in Diaphragm Trash Pump | PDT3A | 5000007614, 5000007615, 5000007616 |
| 50mm/2in Inline Diaphragm Tras h Pump | PDI2A | 5000007624, 5000007625 |
| 75mm/3in Inline Diaphragm Tras h Pump | PDI3A | 5000007628, 5000007629, 5000009407 |
| 50mm/2in Diaphragm Trash Pump | PDT2 | 5000009494, 5000007633 |
| 75mm/3in Diaphragm Trash Pumps | PDT3 | 5000009495, 5000007619 |
| 50mm/2in Diaphragm Trash Pump | PDI2 | 5000009489 |
| 50mm/2in Diaphragm Trash Pump | PDT2B | 5000007612, 5000007613 |
| 75mm/3in Diaphragm Trash Pump | PDI3 | 5000009491, 5000009492 |
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.
