LiftMaster K77-37852 Operator Cover Kit — CSL24U Front / Back Reference
LiftMaster K77-37852 Operator Cover Kit — CSL24U Front / Back Reference
The LiftMaster K77-37852 is the CSL24U operator-cover kit, identified in manufacturer service listings as the front/back cover reference. The CSL24U repair drawing describes an operator cover with labels, keys and lock assembly and also lists K77-37856 as a separate front-cover service item. Confirm the current kit inventory and the exact enclosure revision before ordering. This is a model-specific enclosure repair, not a universal cover for all CSL24, CSW24 or later UL operators.
Compatibility — Models, Versions and Exclusions
| Model or selection point | Compatibility requirement |
|---|---|
| CSL24U | Manufacturer service information identifies this cover kit. |
| K77-37856 front-only cover | A separate service reference; distinguish a single-panel repair from the broader cover kit. |
| CSL24UL / K77-39426 | Later enclosure reference; no blanket substitution established here. |
| CSW24U swing operators | Different enclosure arrangement and cover reference. |
| Damaged chassis or mounting points | Require inspection and correction independently of the cover order. |
Identify the Panel Damage and the Enclosure Revision
Photograph the damaged cover, access area, mounting points and operator label before ordering. A vehicle impact can distort the underlying chassis even when the visible damage seems limited to the outer cover. A new shell should not be forced onto bent supports or used to hide damaged wiring or internal components.
The labels and locking arrangement are part of the enclosure’s intended service configuration. Confirm that the delivered assembly matches the operator and permits normal service access. The front cover has its own reference in the diagram, so ask specifically about that component if it is missing or damaged. Do not infer its inclusion solely from a catalog photograph of a complete operator.
Specifications and Product Identification
| Specification | Details |
|---|---|
| Part number | K77-37852 |
| Manufacturer service description | Cover, front/back, CSL24U |
| Documented operator | CSL24U slide-gate operator |
| Diagram description | Operator cover with labels, keys and lock assembly |
| Separate front-only service reference | K77-37856 |
Before Ordering
- Confirm the model is CSL24U and identify its enclosure revision.
- Determine whether the main cover, front cover or both need replacement.
- Inspect the chassis, attachment points and internal components after any impact.
- Confirm the current package for labels, lock assembly, keys and mounting pieces.
Package Contents and Separate Requirements
The manufacturer service list names K77-37852 as the CSL24U front/back cover reference, and the diagram identifies labels, keys and lock assembly with the operator cover. Confirm the delivered kit inventory, especially if replacing both panels. K77-37856 is also available as a separately identified front-only service item. The motor, boards, batteries and chassis are not included in this cover-service offer.
Safety Warnings — Read Before Installation or Service
- WARNING: A missing or damaged enclosure may expose moving parts and hazardous electrical components. Keep unauthorized people away and use a qualified gate technician for service.
- Isolate AC, battery and any solar power as applicable before removing or fitting the cover.
- Inspect for hidden impact damage and avoid pinching wiring or obstructing moving parts when restoring the enclosure. Do not force a cover onto distorted supports.
- Secure all required panels and guards, preserve warning labels and verify safe gate operation before returning the entrance to use.
Related Products and Important Differences
- LMRRUL monitored photo eye — a separate protection option only where the exact operator and control revision approve it; not a universal legacy retrofit.
- LMWEKITU monitored wireless edge kit — a separate edge communication system for approved controls and resistive edges; not a replacement for this mechanical or electrical service part.
Frequently Asked Questions
Is this the same as the front-only K77-37856?
No. K77-37852 is the broader front/back cover reference; K77-37856 identifies the separate front-only service item.
Does it fit every CSL24UL enclosure?
No blanket fit is established. Verify the exact operator drawing and enclosure revision.
Are the lock and labels identified in the service drawing?
Yes. Confirm that the current supplier kit includes the components required for the repair.
Can a new cover hide damaged mounting supports?
No. Inspect and correct underlying damage before fitting the enclosure.
Need Help Confirming the Right Product?
Contact Garage-DoorParts.com before ordering. Send the full equipment model, readable part labels and photographs of the installed assembly. Include the dimensions, electrical configuration or accessory details relevant to your project so the listing can be checked against the actual installation.
Details
Need Help With Compatibility?
Not sure if this is the correct part for your garage door, operator, gate system, or application? Contact Us before ordering — we’re happy to help.
Garage-DoorParts.com carries a large selection of residential and commercial parts, and many components can look similar while having important differences in dimensions, model numbers, voltage, mounting, or compatibility.
For the best assistance, please provide as much information as possible, including the manufacturer, model number, part number, door or operator type, dimensions, and clear photos of the existing part or equipment.
Our goal is to help you identify the correct product before you order and reduce the possibility of ordering an incompatible part.
Contact Us with your product questions and compatibility information, and we’ll do our best to point you in the right direction.
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We are committed to ensuring a positive shopping experience for all our customers. If for any reason you wish to return an item, we invite you to reach out to our team for assistance, and we will evaluate every return request with care and consideration.
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