The Wacker Neuson Crank Arm Kit is a genuine OEM component designed for the PDT and PDI series diaphragm pumps, including the PDT3A, PDT3, PDT2A, PDI3A, PDI3A(I), and PDI2A(I) models. As a direct OEM replacement, the is manufactured to the same specifications as the original part, ensuring the pump's diaphragm stroke mechanism operates as intended from the factory. This kit is the correct service solution for restoring proper crank arm function across the full range of compatible Wacker Neuson diaphragm pump models.
Key Features
- Genuine OEM Crank Geometry — Manufactured to the original stroke dimensions that govern diaphragm travel, ensuring accurate fluid displacement on every cycle.
- Complete Kit Format — Supplied as a full crank arm kit so all related components are replaced together, eliminating mixed wear between old and new parts.
- Broad Diaphragm Pump Fitment — Confirmed fit across the PDT3A, PDT3, PDT2A, PDI3A, PDI3A(I), and PDI2A(I) pump models.
- Restored Pumping Efficiency — A worn or damaged crank arm causes inconsistent diaphragm stroke and reduced flow output; replacing it with the correct OEM kit brings pumping performance back to specification.
- Direct Service Replacement — Installs in the same position and orientation as the original, working with existing pump housing and diaphragm assembly hardware.
The crank arm is the mechanical link between the pump's drive mechanism and its diaphragm. As the crank rotates, it converts rotational motion into the back-and-forth stroke that draws fluid in through the inlet valve and pushes it out through the discharge. If the crank arm is worn, bent, or damaged, the diaphragm stroke becomes inconsistent, leading to reduced flow rates, pressure loss, or complete pump failure. Replacing the crank arm kit with a genuine Wacker Neuson 5000186903 restores the correct stroke length and ensures the pump moves fluid reliably at its rated capacity.
Part Details
| Part Number | 5000186903 |
|---|---|
| Old Part Number | 0186903 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Crank Arm Kit |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PDT3A | PDT3A | 5000620773, 5100075507 |
| PDT3 | PDT3 | 5000620774 |
| PDI3A | PDI3A | 5000620775, 5100075508 |
| PDI3A(I) | PDI3A(I) | 5000620776, 5100075509 |
| PDT2A | PDT2A | 5100075510 |
| PDI2A(I) PUMP | PDI2A(I) | 5100075511 |
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.
