Product Description
The Genie 27091A.S is a genuine OEM limit worm gear used in the limit mechanism of select Genie residential garage door openers. The worm gear meshes with the limit worm drive (GE-27092A.S) to rotate the limit cam assembly, controlling the precise open and close travel positions of the garage door. It is one of 7 interrelated components in the Genie limit mechanism family; the remaining components - limit wheel, limit pinion, limit cam, limit plate, and limit switch - will be covered in a separate service part group. Compatible models include the 700, 1200, 700IC, 1200IC, IC250, IC250B, PMX500-IB, AC Chain Drive, and DC Belt Drive series.
Key Features
- Meshes with limit worm drive to actuate the limit cam assembly
- Controls door open and close travel limits
- OEM Genie replacement part
- Compatible with a wide range of IC, PMX, and Chain Drive models
- Cross-referenced as FIX10359057 and PS10359057
Compatibility Guide
- Genie 1200
- Genie 1200IC
- Genie 700
- Genie 700IC
- IC250
- IC250B
- PMX500-IB
- AC Chain Drive openers
- DC Belt Drive openers
Professional Specs
| Feature | Specification |
|---|
| Model | Genie GE-27091A.S |
| Item Type | Limit Worm Gear |
| Mounting | Installed on limit mechanism shaft within the powerhead gearbox |
| Alternate Part Numbers | 29-27091A.S, GEN 27091A, 27091A |
Frequently Asked Questions
Q: What does the limit worm gear do in the opener?
A: The limit worm gear meshes with the limit worm drive (GE-27092A.S) to convert rotational motion and drive the limit cam assembly, which controls the open and close travel limits of the door.
Q: Is GE-27091A.S compatible with older Genie models?
A: Yes. GE-27091A.S is compatible with a broad range of models including Genie 700, 700IC, 1200, 1200IC, IC250, IC250B, PMX500-IB, AC Chain Drive, and DC Belt Drive openers.
Q: What are the FIX and PS reference numbers for this part?
A: FIX10359057 and PS10359057 are cross-reference service and parts identifiers that can be used to look up GE-27091A.S in certain aftermarket or service databases.
Q: How does the limit worm gear relate to the limit worm drive (GE-27092A.S)?
A: The limit worm gear (GE-27091A.S) meshes directly with the limit worm drive (GE-27092A.S). These two components work together as the primary motion-transmission pair in the limit mechanism.
Q: What symptoms indicate a failed or worn limit worm gear?
A: Symptoms include the door failing to stop at the correct open or close position, the door reversing unexpectedly, or the opener running past the set limits.
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