LiftMaster Q232 /K77-50336 Bottom Washer and Nut — LA500 Traveler

The LiftMaster Q232 supplier SKU identifies the K77-50336 traveler-carriage washer-and-nut service reference. It is the bottom washer and nut offered for documented LA500 actuator arrangements, rather than a complete traveler, trolley nut ormounting-hardware bag. Match the exact installed carriage and arm revision before ordering. A loose connection may reflect wear or damage elsewhere in the mechanism, so the mating shaft, traveler and retention arrangement need inspection. No thread size, washer diameter or additional hardware quantity is inferred from this kit name.

Compatibility — Models, Versions and Exclusions

Inspect the Traveler Connection Before Replacing Hardware

Photograph the actuator model and traveler connection before disassembly. Have the technician identify the intended location of the washer and nut and inspect the mating surfaces. Movement can arise from a worn carriage, damaged threads or another failed retention component. Do not add extra washers or substitute a similar nut merely to eliminate unexplained play.

Control the gate before disturbing an actuator connection and follow the exact arm service instructions. Restore the specified hardware and retention rather than overtightening to conceal damage. A washer-and-nut order does not repair a worn traveler mechanism or faulty attachment. After the repair, verify correct engagement, clear movement and the operator’s prescribed travel and protection responses before returning the entrance to use.

Specifications and Product Identification

Before Ordering

• Record full LA500 model and traveler arrangement.
• Match Q232 to K77-50336.
• Inspect threads, carriage and mating surfaces.
• Confirm supplied inventory and required final retention checks.

Package Contents and Separate Requirements

This offer identifies the Q232 /K77-50336 washer-and-nut service item. A complete traveler, trolley nut, actuator shaft, gate bracket, post bracket and arm are not promised as included. Confirm the current supplied washer, nut and any additional retention pieces with the supplier. The parts drawing separates the traveler and surrounding hardware, so a small-hardware order must not be treated as a complete rebuilt carriage.

Safety Warnings — Read Before Installation or Service

• WARNING: A moving gate and exposed barrier shaft and arm hardware can cause serious injury. Installation and service require a qualified gate-systems technician.
• Isolate AC power, batteries and any solar supply as applicable, and secure the gate against unexpected movement before work begins.
• Keep people clear of the gate and drive during supervised testing. Never bypass required entrapment-protection devices or increase force to overcome a mechanical fault.
• Restore all covers and guards, then verify travel endpoints, reversal and every required safety device before returning the gate to normal operation.

Related Products and Important Differences

• LOOPDETLM loop detector — a separate detection option only where the operator and loop arrangement approve it; not mounting hardware.
• LMRRUL monitored photo eye — a separate protection option for an approved operator configuration; bracket replacement does not establish sensor compatibility.

Frequently Asked Questions

Is the traveler included?

No. The complete traveler is a separate service assembly.

What number maps to Q232?

K77-50336.

Is the thread size established here?

Confirm the exact current parts and diagram.

Can it repair damaged threads?

No. The mating component requires separate assessment.

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.