The Multiquip 20399 Input Shim 0.005 Thick is a genuine OEM component designed for CA-4-4H series walk-behind power trowels. This precision shim maintains the correct axial clearance at the input shaft, ensuring consistent power transfer through the drivetrain. Sourced directly from Multiquip, part 20399 is the exact specification shim used in original production, giving you confidence in fitment and function from the moment it goes in.
Key Features
- Exact OEM Thickness Specification — Manufactured to a precise 0.005-inch thickness, delivering the correct stack clearance critical to proper input shaft operation.
- Genuine Multiquip OEM Part — Produced to the same tolerances as the original component, ensuring the shim seats and performs exactly as intended in the drivetrain assembly.
- Direct-Fit for CA-4-4H Trowels — Confirmed fitment for Multiquip CA-4-4H walk-behind power trowels; installs in the same position as the factory original without alteration.
- Drivetrain Alignment and Load Distribution — Correct shim thickness prevents excessive shaft play and uneven bearing load, protecting adjacent components from accelerated wear.
- Stackable Adjustment Capability — The 0.005-inch increment allows fine-tuned clearance adjustment when used in combination with other shims in the input assembly.
An input shim is a thin precision spacer positioned at the input shaft of a power trowel's gearbox or drivetrain assembly. Its role is to set and maintain the correct axial clearance between rotating components, preventing unwanted shaft movement that can cause noise, vibration, and premature wear on bearings and gears. When a shim is worn, deformed, or missing entirely, excess play develops in the input assembly, which can lead to uneven blade pitch, rough operation, and accelerated damage to surrounding drivetrain parts.
Part Details
| Part Number | 20399 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Input Shim 0.005 Thick |
Compatibility & Fitment
| Name | Model |
|---|---|
| International Walk-Behind Power Trowels | CA-4-4H |
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.
