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LiftMaster 41C4220A gear and sprocket assembly garage door opener repair kit for LiftMaster, Chamberlain and Sears Craftsman Garage door openers.
The LiftMaster 41C4220A is the complete preassembled drive gear and sprocket assembly repair kit used on many of the LiftMaster, Chamberlain and Sears Craftsman garage door openers as well as the private labeled brands made by Chamberlain. This 41C4220A garage door opener gear and sprocket assembly repair kit includes the drive gear, limit switch gear and chain gear pre-assembled to the drive shaft with the top mounting plate and also includes the motor worm gear, roll pin, grease, bushings and washers needed for a drive mechanism repair. Complete easy to follow step-by-step instructions are also included. The tools that will be needed are: 1/8” allen wrench, flat head screw driver, 1.4” nut driver, 5/32” punch, 3/8” nut driver or socket, 5/16” nut driver or socket with extension and a hammer. This 41C4220A gear and sprocket assembly repair kit is a factory original repair kit made by Chamberlain Corporation who makes the LiftMaster, Sears Craftsman, Master Mechanic, Access Master, Do-It and some of the Wayne Dalton garage door openers. The LiftMaster 41C4220A can save you money by doing it yourself with the easy to follow instructions included using the few tools listed and is less costly than replacing the whole garage door opener because of a worn out gear. The 41C4220A gear and sprocket assembly repair kit includes the drive gear, limit switch gear and chain gear pre-assembled to the drive shaft with the top mounting plate and also includes the motor worm gear, roll pin, grease, bushings and washers as well as step-by-step instructions.
NOTE: Always check that the garage door itself is properly balanced and free moving without any binding before putting it back into operation. Repair any problems before using it with the repaired garage door opener or the gears could wear out very quickly.
We cannot provide any guarantee with this product since we have no control over the workmanship being done or that everything is properly set and balanced.
NOTE: The model number of the garage door opener will typically be under the light cover.
Sears Craftsman has too many models to list, but if your chain drive garage door opener has the gear assembly shown in the photo with one sprocket at the top then this will work.
Repair your garage door opener and save money
Preassembled drive shaft with all the gears and sprocket
Easy to follow instructions
Large gear 2 ¾” diameter with ½” shaft hole and 32 teeth
Top chain sprocket 1 ½” diameter with 8 teeth
Mounting plate 4 ½” diameter
Worm gear 2 1/8” long 1 1/8” diameter with ½” shaft hole
If you are not positive that this is the correct item for you, please email us. We are more that happy to assist you in determining the correct item for you. If you need to contact us for assistance please have the Make and Model number of the garage door opener, radio receiver or transmitter. We would rather have you contact us than end up with the wrong item and have to return it.