The Wacker Neuson Lock Washer is a genuine OEM component designed for the PDT2, PDT3, PDI2, and PDI3 diaphragm trash pump series, as well as CRT36 and CRT46 ride-on concrete trowels. As a factory-sourced part, the is manufactured to the same specifications as the original, ensuring a proper fit within the fastener assemblies it secures. This Lock Washer covers a wide range of Wacker Neuson diaphragm pump models — including both inline and standard configurations in 50mm/2in and 75mm/3in sizes — making it a versatile service item to have on hand. Confirm your model number before ordering to ensure this is the correct replacement for your specific unit.
Key Features
- Genuine OEM Hardness and Temper — Manufactured to Wacker Neuson's material spec, so the washer delivers the correct spring tension and bite needed to hold fasteners securely under vibration and pump cycling loads.
- Drop-In Replacement — Matches the original bore diameter, outer diameter, and tooth profile, seating correctly on the fastener without adjustment or rework.
- Broad Fitment Across Two Machine Families — Compatible with PDT2, PDT3, PDI2, and PDI3 diaphragm trash pumps (50mm/2in and 75mm/3in) and CRT36 and CRT46 series ride-on concrete trowels.
- Prevents Fastener Loosening Under Load — A correctly functioning lock washer keeps critical fasteners from backing out during operation; a failed or missing washer can lead to loose assemblies, misalignment, and accelerated wear on surrounding components.
- Sourced Direct from Wacker Neuson — Supplied as a genuine OEM part, so you receive the same component installed at the factory — not an approximation.
A lock washer is a small but essential hardware component placed beneath a nut or bolt head to resist loosening caused by vibration, torque, and dynamic loads. Its serrated or split profile bites into both the fastener and the mating surface, creating mechanical resistance that keeps the connection tight during operation. On diaphragm trash pumps — which run with continuous pulsing and vibration — and on ride-on concrete trowels subject to constant rotational forces, fasteners that are not properly secured can work loose over time, leading to component shift, fluid leaks, or structural failure. Replacing a worn or missing lock washer is a straightforward step that protects the integrity of the entire assembly it holds together.
Part Details
| Part Number | 5000072699 |
|---|---|
| Old Part Number | 0072699 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Lock Washer |
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 |
| CRT46KHN | CRT46KHN | 5000007515 |
| CRT46KHO | CRT46KHO | 5000007641 |
| 915mm/36in Ride-On Trowel, ove rlapping | CRT36ASO | 5000007512 |
| 915mm/36in Ride-On Trowel, non #NAME? | CRT36ASN | 5000007513 |
| CRT46ASO | CRT46ASO | 5000007514 |
| 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.
