LiftMaster 041C4220A Chain-Drive Gear and Sprocket Replacement Kit
LiftMaster 041C4220A Chain-Drive Gear and Sprocket Replacement Kit
The LiftMaster 041C4220A is a complete internal gear-and-sprocket repair kit for compatible LiftMaster and Chamberlain residential chain-drive garage door openers manufactured after 1993. It transfers power from the opener motor to the chain-drive sprocket and trolley system.
Also referenced as 41C4220A, 41C4220, 41C4220C and 41A2827.
Features
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Complete chain-drive gear and sprocket repair kit
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Replaces worn internal drive components
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Designed for compatible post-1993 chain-drive openers
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Restores power transfer from the motor to the drive chain
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Factory-style replacement configuration
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Includes the common wear components required for a complete gear repair
Kit Contents
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Helical gear and sprocket assembly
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Worm gear
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Wear bushings
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Motor-shaft and sprocket-support components
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Lubricating grease
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Installation hardware
Contents can vary by production revision; review the supplied kit before disassembling the opener.
Compatibility
Compatible with select LiftMaster and Chamberlain chain-drive openers manufactured after 1993. Common LiftMaster applications may include:
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1240, 1240R and 1245
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1245R and 1245LK
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1250, 1255 and 1255R
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1260, 1260LK and 1265
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1345 and 1355
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220WD and 320WD
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Compatible Raynor Pilot, Navigator and Corporal models
Confirm the opener model, manufacturing date, drive type and original gear-assembly number. This kit is not intended for belt-drive or screw-drive openers.
Related part: LiftMaster 041A2780 Chain Pulley Bracket
Common Failure Symptoms
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Motor runs but the chain does not move
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White plastic shavings inside the opener housing
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Grinding, clicking or slipping
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Excessive movement in the sprocket shaft
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Chain becomes loose shortly after adjustment
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Trolley movement is inconsistent
Gear failure can result from an unbalanced or binding garage door. Correct the underlying door problem before operating the replacement assembly.
Installation & Safety
Disconnect electrical power and close the garage door before service. Release chain tension before removing the assembly. Inspect the chain, rail, trolley, motor shaft and front pulley bracket for additional wear.
After installation, tension the chain according to the opener manual and test travel limits, force settings and the safety-reversal system.
Details
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