The Wacker Neuson Left Hand Worm Gear is a genuine OEM component designed for CRT36 and CRT48 series ride-on concrete power trowels. This part is sourced directly from Wacker Neuson, ensuring it meets the original design specifications for the trowel drive system. Compatible models include the CRT36-24A, CRT36-25, CRT36-26A, CRT48-31V, CRT48-33K, CRT48-34V, CRT48-35L, CRT48-35V, CRT48-37V, CRT48-57K, and related variants including Power Steer, Dual-Fuel, Electronic Steering, and wheel kit configurations. Ordering by part number ensures you receive the correct left-hand orientation gear for your specific machine.
Key Features
- Correct Left-Hand Helix Orientation — Engineered with the proper left-hand worm thread direction to mesh accurately with the mating gear in the trowel drive assembly; substituting an incorrect-hand gear will cause immediate drive failure.
- Genuine OEM Part — Manufactured to Wacker Neuson's original tolerancing for tooth profile and gear pitch, maintaining the correct torque transfer characteristics of the rotor drive system.
- Broad CRT Series Compatibility — Fits a wide range of 36-inch and 48-inch ride-on trowel models across the CRT36 and CRT48 families, including standard, high-speed, Power Steer, Electronic Steering, and Dual-Fuel variants.
- Maintains Rotor Drive Efficiency — A worn or damaged worm gear causes rotor speed loss, uneven blade pitch response, and increased heat buildup in the gearbox; replacing with part 5000115703 restores full drive transfer.
- Drop-In Replacement — Matches the original mounting geometry and shaft interface of the CRT gearbox, allowing reinstallation without machining or modification to the housing.
The worm gear is a critical component of the ride-on trowel's rotor gearbox, translating rotational input from the drive shaft into the controlled rotor speed that spins the finishing blades across the concrete surface. In a left-hand configuration, the helical thread wraps in a specific direction that determines the direction of thrust load within the gearbox — using the wrong hand will cause the gear to bind or disengage under load. When a worm gear wears or chips, the rotor may slip, vibrate abnormally, or lose responsiveness to pitch adjustments, compromising the quality of the concrete finish and potentially damaging the gearbox housing.
Part Details
| Part Number | 5000115703 |
|---|---|
| Old Part Number | 0115703 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Left Hand Worm Gear |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| CRT48-35L Trowel | CRT48-35L | 5000620113, 5000620806 |
| CRT48-35V | CRT48-35V | 5000620112 |
| CRT48-35V | CRT48-35V EU | 5000620807 |
| 915mm/36in Ride-on Trowel | CRT36-25 | 5000620115, 5000620295, 5000620803, 5000620804 |
| 1220mm/48in Ride-on Trowel | CRT48-34V | 5000620805, 5000620075, 5200004935 |
| 1220mm/48in Ride-on Trowel | CRT48-31V | 5000620476 |
| 915mm/36in Ride-On Trowel | CRT36-24A | 5000620080, 5000620299, 5000620801, 5000620802 |
| 1220mm/48in High Speed Ride-On Trowel | CRT48-31V-H | 5000009086 |
| 1220mm/48in Low Speed Ride-On Trowel | CRT48-25K-L | 5000009084 |
| 1220mm/48in High Speed Ride-On Trowel | CRT48-25K-H | 5000009085 |
| 915mm/36in Ride-On High Speed Trowel | CRT36-23K-H | 5000009083 |
| 915mm/36in Ride-On High Speed Trowel | CRT36-24A-H | 5000009232 |
| CRT48-35L-PS | CRT48-35L-PS | 5000620704 |
| CRT48-35L-PS | CRT48-35L-PS EU | 5000620900 |
| Ride-on Trowel | CRT48-31V-E | 5000009481 |
| Ride-on Trowel | CRT48-31V-ES-E | 5000009482 |
| Ride-on Trowel | CRT36-24A-E | 5000009483 |
| CRT36-26A Trowel w/Wheel Kit | CRT36-26A | 5000621000, 5000620999, 5000621001, 5000621002 |
| 1220mm/48in Ride-on Trowel, El ectronic Steering | CRT48-31V-ES | 5000009216 |
| CRT48-33K | CRT48-33K | 5200002353 |
| CRT48-33K Trowel, Dual-Fuel | CRT48-33K DF | 5200007686, 5200007687 |
| 915mm/36in Ride-On High Speed Trowel | CRT36-25K-H | 5000620027 |
| CRT48-33K | CRT48-33k | 5200002354 |
| CRTv 36-26A Trowel, w/Wheel Kit | CRTv36-26A | 5200008544, 5200008545, 5200008546 |
| CRT48-57K Trowel, Power Steer | CRT48-57k-PS | 5200018779 |
| CRT48-37V Trowel | CRT48-37V | 5100024209 |
| CRT48-57K Trowel | CRT48-57K-MS | 5100018892 |
| CRT48-37V Trowel, Power Steer | CRT48-37V-PS | 5100024291 |
| CRT48-57K-PS | CRT48-57k-PS EU | 5200018820 |
| CRT48-35V, Power Steer | CRT48-35V-PS | 5200016909 |
| CRT48-37V | CRT48-37V EU | 5100024290 |
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.
