Gliderol Worn Gearbox or Loose Mounting Hardware

Gliderol garage door opener makes loud grinding or clunking noises during operation.

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.

Possible Causes

Worn motor gearbox gears, Loose opener mounting brackets, Loose rail bolts, Chain too loose and slapping rail

Safety first: Disconnect power before tightening hardware or opening the housing.

Steps to reduce noise:

1. Tighten hardware: Check all Gliderol opener mounting brackets, rail bolts, and door arm fasteners. Tighten securely.
2. Adjust chain tension: For chain drive, adjust the tensioner so the chain has a small amount of sag but does not slap the rail.
3. Listen to gearbox: If grinding comes from inside the motor/gearbox, the internal gears are likely worn and the motor assembly should be replaced.

Medium 3/5

Gliderol Motor Assembly

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