The Multiquip EM516820 is a genuine OEM Compression Spring designed for hydraulic-driven Mayco concrete pump models including the LS400, LS500, LS600, LS60TD, LS40D, LS40TD, LS50TD, and LS600P. As a factory-authorized replacement, this spring meets the original design tolerances required for consistent valve and piston actuation in demanding concrete pumping applications. Sourced directly through Multiquip's OEM parts network, the EM516820 delivers the same mechanical properties as the component installed at the factory. Confirm your model code against the fitment list above before ordering to ensure correct application.
Key Features
- OEM Spring Rate Integrity — Manufactured to the original load and deflection specifications, ensuring consistent actuation force throughout the pump's hydraulic and valve circuits.
- Direct Drop-In Replacement — Engineered to the same dimensional profile as the original, allowing straightforward installation without modification to surrounding components.
- Broad LS-Series Fitment — Confirmed for LS400, LS500, LS600, LS60TD, LS40D, LS40TD, LS50TD, and LS600P Mayco concrete pump models.
- Sustained Pumping Consistency — A correctly tensioned spring maintains proper valve closure and piston return, supporting steady concrete output volume and pressure on every stroke.
- Genuine Multiquip OEM Part — Supplied under Multiquip's authorized parts program, this component matches the metallurgical and dimensional standards of the original production spring.
A compression spring in a hydraulic concrete pump plays a critical role in controlling the return movement of valves or pistons within the pumping circuit. It provides the restoring force needed to reset a component to its neutral position after each stroke or actuation cycle, keeping the pump's timing and flow consistent. When a compression spring weakens, takes a set, or breaks, the affected valve or piston may fail to return fully, leading to reduced output pressure, inconsistent concrete delivery, or complete loss of pumping function.
Part Details
| Part Number | EM516820 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Compression Spring |
Compatibility & Fitment
| Name | Model |
|---|---|
| Mayco Pumps | LS400 |
| Mayco Pumps | LS500 |
| Mayco Pumps | LS600 |
| Mayco Pumps | LS60TD |
| Mayco Pumps | LS40D |
| Mayco Pumps | LS40TD |
| Mayco Pumps | LS50TD |
| Mayco Pumps | LS600P |
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.
