The Multiquip 501407840 is a genuine OEM D.C. Link Pin 6X28-23 designed for MDR-9DYE, MDR-9GH, and MDR-9D ride-on power trowels. As a direct Multiquip OEM component, part 501407840 is manufactured to the exact dimensions and material specifications required for proper fit and function in the trowel's pitch adjustment linkage. Sourced directly through authorized Multiquip supply channels, this pin is a stock replacement that installs without any modification to the host machine. If you are servicing an MDR-9 series trowel, verifying fitment against your model code before ordering ensures you receive the correct pin for your machine.
Key Features
- Genuine OEM Dimensional Accuracy — Machined to the exact 6X28-23 specification, ensuring the pin seats correctly within the linkage bore without play or binding.
- Direct Drop-In Replacement — Matches the original pin geometry so it installs directly into the D.C. linkage assembly on MDR-9 series trowels without reworking surrounding hardware.
- Confirmed MDR-9 Series Fitment — Verified for the MDR-9DYE, MDR-9GH, and MDR-9D ride-on power trowel models.
- Maintains Blade Pitch Control Integrity — A correctly sized link pin keeps the pitch adjustment mechanism operating smoothly, allowing the operator to maintain consistent blade angle across the full working pass.
- Wear-Resistance for High-Cycle Linkage Use — Link pins in pitch control assemblies are subject to constant articulation; using an OEM pin with correct material hardness prevents premature wear that would introduce looseness into the control linkage.
The D.C. link pin is a precision fastening component within the blade pitch adjustment linkage of a ride-on power trowel. It connects articulating linkage arms, allowing the operator to change the angle of the trowel blades relative to the concrete surface — a critical adjustment that controls finishing pressure and surface texture throughout the troweling cycle. When a link pin wears, becomes loose, or fails, the linkage develops play that translates directly into inconsistent blade pitch, reducing the operator's ability to achieve a uniform finish and potentially causing uneven loading across the trowel rotor.
Part Details
| Part Number | 501407840 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | D.C. Link Pin 6X28-23 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Power Trowels | MDR-9DYE |
| Power Trowels | MDR-9GH |
| Power Trowels | MDR-9D |
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.
