The Multiquip EM705 is a genuine OEM Cotter Pin 3/16 x 1-1/2 designed for Mayco cycloidal concrete pump models including C30HD, C30HDNI, C30HDN, C30HDG, C30HDGA, C30HDZ, and the Precision and Zenith variants of the C30HDNI. As an authentic Multiquip replacement component, EM705 meets the original engineering specifications for these concrete pump units. Sourcing the correct cotter pin for your C30-series pump ensures that pinned connections remain properly secured throughout demanding concrete placement operations. DHS Equipment stocks this genuine OEM part for fast, accurate fulfillment.
Key Features
- Genuine OEM Specification — Manufactured to the exact dimensional standard required for secure, load-bearing pinned joints on Mayco C30-series concrete pumps.
- Correct 3/16 x 1-1/2 Sizing — The precise diameter and length allow the pin to seat and spread correctly through clevis and pivot points without modification.
- Broad C30-Series Compatibility — Fits C30HD, C30HDNI, C30HDNI Precision, C30HDNI Zenith, C30HDN, C30HDG, C30HDGA, and C30HDZ concrete pump models.
- Fastener Retention Integrity — A correctly installed cotter pin locks axle and clevis pins in place, preventing lateral movement or pull-out under the cyclic loads common in concrete pumping cycles.
- Fast Field Replacement — A consumable hardware item that should be replaced any time a pinned connection is disassembled; keeping spares on hand keeps maintenance turnaround short.
A cotter pin is a split fastener inserted through a drilled hole in a shaft or bolt to prevent a mating pin, nut, or clevis from backing out during operation. On concrete pumps like the Mayco C30-series, cotter pins secure critical pivot and linkage connections that experience continuous vibration and mechanical load during pumping. When a cotter pin shears, bends flat, or is lost during service, the connection it was securing can work loose, leading to accelerated wear on surrounding components or an unsafe condition at the pinned joint.
Part Details
| Part Number | EM705 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Cotter Pin 3/16 x 1-1/2 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Mayco Pumps | C30HD |
| Mayco Pumps | C30HDNI |
| Mayco Pumps | C30HDNI Precision |
| Mayco Pumps | C30HDN |
| Mayco Pumps | C30HDNI Zenith |
| Mayco Pumps | C30HDG |
| Mayco Pumps | C30HDZ |
| Mayco Pumps | C30HDGA |
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.
