Springs
Chamberlain Garage Door Opener Gears
If your Chamberlain opener is noisy or not lifting properly, worn gears are a common cause. Replacing the gears is an affordable way to restore smooth operation and extend the life of your opener.
Popular replacement kits:
- Drive Gear & Worm Gear Kit (41A2817) – fits many Chamberlain, LiftMaster, and Sears Craftsman chain-drive models.
- Gear & Sprocket Assembly (41C4220A) – complete gear and sprocket assembly used across a wide range of compatible units.
Tip: Always verify compatibility by checking the opener’s model number on the motor head before ordering.
FAQs – Chamberlain Gears
How do I know my gears are stripped?
The motor runs but the chain/belt doesn’t move, and you may find white plastic shavings inside the opener housing.
Can I replace the gears myself?
Yes—basic tools and careful steps are required. Unplug power, open the housing, remove the old gears, install the new kit, then test and lubricate.
Do these gear kits work with LiftMaster or Craftsman?
Many Chamberlain, LiftMaster, and Sears Craftsman models share the same internal parts. Check your specific model to confirm compatibility.
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