LiftMaster 41D794 Motor With Positioning Sensor
The LiftMaster 41D794 motor with positioning sensor is a replacement kit for select belt drive garage door openers. It is commonly referenced under the newer service number 041D0794.
The positioning sensor helps the opener control system track motor position and door travel. Because that feedback is tied to the opener electronics, the motor and sensor kit must match the original opener model and wiring setup.
Compatibility and Application Notes
- For use with various LiftMaster and Chamberlain belt drive garage door openers where the parts diagram calls for 41D794 or 041D0794.
- Includes motor and positioning sensor assembly for matching applications.
- Not a universal replacement for all belt drive models.
- Not intended for chain drive, screw drive, or wall-mounted openers unless specifically listed by the parts diagram.
- Travel and safety reversing operation should be checked after service.
Features & Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster |
| Product Type | Motor with positioning sensor replacement kit |
| Part Number | 41D794 |
| Current Service Number | 041D0794 |
| Application | Select belt drive garage door opener motor replacement |
| Compatible Operator Type | Belt drive |
| Sensor Type | Integrated positioning sensor |
| Notes | Match opener model, wiring, and parts diagram |
Also Known As / Related Part Numbers
Technician Note
A motor-positioning fault can appear similar to travel-limit, logic-board, or door-balance problems. Confirm the mechanical door and opener diagnostics before replacing the motor assembly.
Before Ordering
- Confirm the opener is a matching belt drive model.
- Confirm the original motor part number or parts diagram shows 41D794 / 041D0794.
- Inspect the belt, trolley, sprocket, and door balance.
- Check wiring connectors for heat or damage.
- Test safety reversal and travel after replacement.
Professional Advisory
Motor replacement involves electrical service and moving opener parts. If wiring is damaged or the door moves unsafely, stop using the opener and contact a qualified technician.
Product Q&A
What is the newer service number for 41D794?
41D794 is commonly referenced as 041D0794 in current LiftMaster service-part listings.
What does the positioning sensor do?
The positioning sensor provides feedback to the opener control system so the opener can track motor position and door travel.
Is this motor for wall-mounted openers?
No. This motor kit is for select belt drive garage door opener applications, not wall-mounted jackshaft-style operators.
Can motor symptoms be caused by the door?
Yes. A heavy or binding door, worn trolley, belt issues, or damaged sprocket can create symptoms that look like motor failure.
What should be tested after replacing the motor?
Travel, force, remote operation, wall control operation, and safety reversing sensors should all be tested after service.
