The Dutton-Lainson TW9000 StrongArm uses a 12V DC motor for powered in-and-out pulling, with a controlled freewheel clutch, a mechanical brake and a 2-inch × 20-foot strap. The 3,000 lb winch is model TW9000, manufacturer item 25215, and has an emergency crank handle. The parts below are for TW9000 units manufactured in 2013 or later.
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Dutton-Lainson TW9000 12V electric trailer winch (part 25215)3,000 lb horizontal pulling rating; 2-inch × 20-ft strap
Dutton-Lainson TW9000 12V electric trailer winch (part 25215)3,000 lb horizontal pulling rating; 2-inch × 20-ft strap
Dutton-Lainson TW9000 12V electric trailer winch (part 25215)3,000 lb horizontal pulling rating; 2-inch × 20-ft strap
Original winch exploded drawing
The manufacturer document includes the complete assembly illustration and repair-parts key. Use the matching model and production date when choosing an individual replacement.
Open the original PDF on your phone to zoom in on the internal gears and part labels.
TW9000 2013-and-later factory parts
Manufacturer part numbers are listed for identification. Individual internal repair parts are not implied to be sold separately by NewRVParts.
| Callout | Dutton-Lainson part number | Component |
|---|---|---|
| A | 304314 | Bearing-housing assembly |
| B | 304304 | Primary drive-shaft assembly |
| F | 5703079 | Auxiliary emergency handle assembly |
| J | 304814 | Intermediate drive-shaft assembly |
| L | 404932 | Main winch base |
| P | 5703178 | Clutch handle replacement kit |
| Q | 5703194 | Thrust-bearing service kit |
| R | 306100 | Clutch gear assembly |
| T | 306101 | 84-tooth gear assembly |
| AF | 304422 | Brake-disc assembly |
| AR | 304815 | Reel assembly |
| AZ | 5242516 | 2-inch × 20-foot winch strap |
| CA | 304742 | 12V electric motor |
| CB | 5241518 | Winch wiring harness / connector assembly |
| CD | 206007 | Electrical control switch |
| CG | 304025 | Circuit-breaker assembly |
Identify the manual backup and clutch parts
TW9000 uses a separate crank handle for emergency winching without electrical power. The handle engages the drive shaft only after power is disconnected and is removed again before powered operation. The manufacturer limits continuous electric winch operation to four minutes before cooling. On TW9000, the strap winds beneath the drum.