The Wacker Neuson Spring is a genuine OEM component designed for a wide range of Wacker Neuson equipment, including PDT2A and PDT3A diaphragm trash pumps, PDI2A and PDI3A inline diaphragm trash pumps, PT2A centrifugal trash pumps, PG2A and PG3A pump units, CT30 and CT36 walk-behind concrete trowels, WP and VP series single-direction vibratory plate compactors, BPU reversible vibratory plates, and GP and G-series portable generators. Sourced directly from Wacker Neuson, part is manufactured to the exact tolerances required for each listed application. This spring serves across multiple machine families, making it a versatile and high-demand service part. Always confirm your specific model and machine number against the fitment list before ordering.
Key Features
- Genuine OEM Spring Tension Integrity — manufactured to Wacker Neuson's original load and deflection specifications, ensuring correct spring force is maintained across all listed applications rather than an approximated substitute.
- Drop-In Replacement — engineered to match the original mounting points, diameter, and free length so it seats correctly without modification to surrounding hardware.
- Broad Cross-Family Fitment — verified for PDT, PDI, PT, PG pump families; CT30 and CT36 walk-behind trowel series; WP, VP, VPA, BPU vibratory compaction plates; G and GV portable generator series; and vibratory truss screed power sections.
- Consistent Return Force for Critical Functions — a spring operating below its rated tension can cause erratic valve actuation, inconsistent pump flow, or loss of control-mechanism response; this OEM part restores correct operation.
- Long-Term Fatigue Resistance — produced from material grade specified for repeated compression/extension cycles in vibration-heavy and hydraulically active environments typical of compaction and pump applications.
A spring in this context serves as a return or retention element within valve assemblies, throttle linkages, diaphragm mechanisms, or governor systems depending on the host machine. Its role is to apply a consistent, calibrated force that returns a moving component to its rest or neutral position after actuation. When a spring loses tension through fatigue, corrosion, or physical damage, the affected mechanism may stick, fail to seat properly, or respond inconsistently — leading to poor pump flow, uneven engine speed control, or loss of engagement in compaction controls. Replacing a worn spring with a correctly rated OEM part restores the predictable mechanical behavior the rest of the assembly depends on.
Part Details
| Part Number | 5000081778 |
|---|---|
| Old Part Number | 0081778 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Spring |
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 |
| PT2A | PT2A | 5000009095, 5000009237, 5000009092, 5000006720, 5000006721 |
| PG2A | PG2A | 5000007658, 5000009054 |
| PG3A | PG3A | 5000007659, 5000009055 |
| 915mm/36in CE Walk-behind Trow el | CT36ADP | 5000007592, 5000007591 |
| 915mm/36in CE Walk-behind Trow el | CT36ADP-E | 5000008034, 5000007697 |
| 762mm/30in CE Walk-behind Trow el | CT30AGT-E | 5000007589, 5000008004 |
| 762mm/30in CE Walk-behind Trow el | CT30AGT | 5000008006, 5000008003 |
| Vibratory Plate, 15kN, 400mm/1 5.5in | WP1540AW | 5000008060, 5000009472, 5000009545 |
| WP1540A VIBROPLATE | WP1540A | 5000008061, 5000630017 |
| Vibratory Plate, 15 kN, 500mm/ 19.5in | WP1550AW | 5000007576, 5000009486 |
| WP1550A Single Direction Vibratory Plate | WP1550A | 5000007579, 5000630019 |
| 762mm/30in CE Walk-behind Trow el | CT30ADT | 5000008005, 5000008001, 5000008197 |
| 915mm/36in CE Walk-behind Trow el | CT36ADT-E | 5000007590, 5000008008, 5000008226 |
| 915mm/36in CE Walk-behind Trow el | CT36ADT | 5000008013, 5000008007, 5000008198, 5000008225, 5000009480 |
| VP1550AW VIBROPLATE | VP1550AW | 5000009028, 5000630055 |
| VP1340AW VIBROPLATE | VP1340AW | 5000009032, 5000630058 |
| VP1550A Single Direction Vibratory Plate | VP1550A | 5000009027, 5000630054 |
| VP1135AW VIBROPLATE | VP1135AW | 5000009058 |
| VP2050A VIBROPLATE | VP2050A | 5000009087, 5000630062 |
| WPU1550A | WPU1550A | 5000630033 |
| WPU1550Aw | WPU1550Aw | 5000630034 |
| VP1135A VIBROPLATE | VP1135A | 5000009057 |
| Gasoline Power Unit for Intern al Vibrator | A3000 | 5000006237 |
| Vibratory Plate | VPA1740 | 5000006794, 5000008062 |
| Vibratory Plate 587mm/18in | VPG165A | 5000008038 |
| 50Hz Portable Generator | G2.1AE | 5000008250, 5000008244, 5000008246, 5000008248 |
| WPP 1550Aw | WPP1550Aw | 5000630030 |
| Vibratory Plate | VPA1750 | 5000006792 |
| 762mm/30in CE Walk-behind Trow el | CT30ADT-E | 5000007587, 5000008002 |
| Vibratory Plate 587mm/18in | VPG170A | 5000008039 |
| 50Hz Portable Generator | G2.1A | 5000008249, 5000008243, 5000008245, 5000008247 |
| Single Direction Plates | AP1550AW | 5000009540 |
| WPP 1540A | WPP1540A | 5000630025 |
| WPP 1550A | WPP1550A | 5000630029 |
| Portable Generator | G2.5A | 5000007188, 5000009256 |
| 50Hz Portable Generator | G5.7AE | 5000009017 |
| WP 2050A | WP2050A | 5000630022 |
| WPP 1540Aw | WPP1540Aw | 5000630026 |
| Single Direction Plates | AP1550A | 5000009539 |
| VP2050AW VIBROPLATE | VP2050AW | 5000009510 |
| Single Direction Plates | WP1550Aw | 5000630112 |
| Single Direction Plate | WP2050Aw | 5000630115 |
| Single Direction Plates | WP1540Aw-L | 5000630123 |
| Reversible Plates | WPU 1550A-L | 5000630124 |
| Single Direction Plates | WP1550Aw-L | 5000630126 |
| Vibratory Plate 500mm/19.5in | VPA1350W | 5000006793 |
| CT36-5A-C Trowel | CT36-5A-C | 5000620040 |
| Single Direction Plates | WP1540Aw | 5000630106 |
| Vibratory Plate 400mm/15.5in | VPA1340 | 5000007154 |
| BPU2540A | BPU 2540A | 5000008758 |
| Gasoline Power Unit for Intern al Vibrator | A5000 | 5000009213 |
| 50Hz Portable Value Generator | GV2500A | 5000009355, 5000009360, 5000620542, 5000620286 |
| Single Drum Vibratory Roller | RS600A | 5000630010 |
| Single direction vibratory plate VP1340A | VP1340A | 5000630057 |
| Single Direction Plates | WP2050Aw-L | 5000630125 |
| Reversible Vibratory Plate, 24 kN, 40cm/16in | BPU 2440A | 5000007867, 5000007869 |
| Vibration Plate BPU 2450A | BPU 2450A | 5000007868 |
| Vibratory Truss Screed, Power Section | HP100 | 5000008291 |
| Vibratory Truss Screed, Power Section | HP50 | 5000008292 |
| Vibratory Truss Screed, Power Section | SP75 | 5000008295 |
| Vibratory Truss Screed, Power Section | SP50 | 5000008296 |
| Vibratory Truss Screed, Power Section | HP100A | 5000009506 |
| HP50A | HP50A | 5000009508 |
| Single direction vibratory plate WP1235A | WP1235A | 5000630016 |
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.
