Motorlift Worn or Damaged Drive Belt

Garage door opener belt appears frayed, cracked, or missing teeth.

Advertisements

Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Advertisements

Possible Causes

Normal wear over time, Misaligned pulleys, Over-tensioned belt, Debris in belt path

How to Fix / Troubleshooting

Safety first: Unplug the opener before replacing the belt.

Steps to replace belt:

  • Release belt tension: Loosen the belt tensioner nut at the trolley end of the rail.
  • Remove old belt: Slip the belt off the motor sprocket and trolley, then pull it out of the rail.
  • Install new belt: Thread the new Motorlift-compatible belt through the rail, around the motor sprocket, and through the trolley.
  • Set tension: Tighten the tensioner nut until the belt has slight deflection (per Motorlift specs) without being overly tight.
  • Test operation: Run the opener through several cycles and listen for smooth, quiet operation.
Advertisements

Repair Difficulty

Medium 3/5

Required Part

Motorlift Drive Belt
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements