The Multiquip 20394 Gearbox Assembly JA is a genuine OEM component designed for JA-Series walk-behind concrete trowels. As a direct OEM replacement, it is manufactured to the same specifications as the original unit, ensuring a proper fit within the trowel's blade pitch control system. This assembly is the correct specified replacement for JA-Series machines, giving you confidence that you are installing the right part the first time. DHS Equipment sources this part directly through authorized Multiquip channels to ensure authenticity.
Key Features
- Genuine OEM Gearbox Integrity — Precision-matched gear tolerances and housing dimensions that meet the original design criteria for smooth, consistent blade pitch adjustment on JA-Series trowels.
- Direct-Fit Assembly — Complete gearbox assembly with mounting points and shaft interfaces that align directly with the JA-Series drive train, eliminating guesswork during installation.
- JA-Series Compatibility — Specifically configured for Multiquip JA-Series 36-inch walk-behind trowels with Quick Pitch handle, ensuring correct engagement with the pitch control linkage.
- Restored Blade Pitch Control — A functioning gearbox maintains accurate, consistent blade angle adjustment across all four blades; a worn or damaged unit leads to uneven pitch, poor surface finish, and operator fatigue.
- Complete Assembly Replacement — Supplied as a full gearbox assembly rather than individual components, simplifying the repair process and restoring the trowel to full operational condition in a single service step.
The gearbox assembly on a walk-behind trowel is the mechanical heart of the blade pitch control system. It translates input from the operator handle into precise angular adjustments across the trowel blades, directly controlling the finish quality and float characteristics of the concrete surface. When the gearbox wears, develops play, or fails entirely, the operator loses the ability to make accurate pitch corrections — resulting in uneven finishes, reduced surface quality, and potential machine damage if left unaddressed.
Part Details
| Part Number | 20394 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Gearbox Assembly JA |
Compatibility & Fitment
| Name | Model |
|---|---|
| Walk-Behind Trowels | JA-SERIES |
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.
