The Multiquip 20406 Output Shim 0.020 Thick is a genuine OEM replacement part designed for SCT36, SCT46, BA Series, CA Series, and JA Series walk-behind power trowels. As a factory-specified shim, it delivers the exact thickness tolerance required to maintain proper gear mesh and output shaft alignment across compatible Multiquip trowel models. Sourced directly through Multiquip's OEM supply chain, part 20406 meets the same dimensional standards as the original component it replaces. Verified fitment spans a broad range of Multiquip walk-behind trowel platforms, including HPLA, HPHA, and CA4 series units.
Key Features
- Exact 0.020" Thickness Tolerance — Machined to the precise thickness specification required for correct output shaft preload and gear alignment in Multiquip walk-behind trowel gearboxes.
- Genuine OEM Part — Manufactured to Multiquip's original design spec, ensuring dimensional accuracy that aftermarket shims may not consistently deliver.
- Broad Trowel Series Compatibility — Confirmed fitment across SCT36, SCT46, BA Series, CA Series, JA Series, HPLA, HPHA, and CA4 series walk-behind power trowels.
- Drop-In Gearbox Fit — Designed to seat correctly in the output shaft stack during gearbox assembly or rebuild without additional machining or modification.
- Supports Smooth Blade Drive Operation — Correct shim thickness maintains proper gear engagement, preventing premature wear on output shaft components and preserving consistent blade speed.
An output shim is a precision-thickness spacer used inside the trowel's gearbox to set the correct axial position and preload of the output shaft. By controlling the gap between rotating components, the shim ensures that gears mesh correctly and that shaft bearings operate within their designed load range. When a shim is worn, missing, or installed at the wrong thickness, the result is excessive gear lash, accelerated bearing wear, vibration, and ultimately gearbox failure — making correct shim selection critical during any trowel gearbox service or rebuild.
For fitment questions or to confirm compatibility with your specific Multiquip trowel model, contact the DHS Equipment parts team for assistance.
Part Details
| Part Number | 20406 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Output Shim 0.020 Thick |
Compatibility & Fitment
| Name | Model |
|---|---|
| Saws | SCT36 |
| Saws | SCT46 |
| Walk-Behind Trowels | HPLA46411H |
| Walk-Behind Trowels | HPHA46411H |
| Walk-Behind Trowels | BA-SERIES |
| Power Trowels | CA4.4HM |
| Walk-Behind Trowels | HPLA-HPHA-36 |
| C and CA Series | CA4HC |
| Whiteman Walk-Behind Power Trowels | CA4HM |
| International Walk-Behind Power Trowels | CA-4-4H |
| Heavy Duty Series | HPHA36C5H |
| Walk-Behind Trowel | HPHA-46-SERIES |
| Walk-Behind Trowels | JA-SERIES |
| Saws | SCT36ANDSCT46 |
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.
