Review on 🔧 Liftmaster/Chamberlain/Sentex 41A2817 Gear Kit: Enhance Garage Door Performance by David Caldwell

Not just turning nuts and bolts. It requires some mechanical skill. The product is good. Nothing but a large amount of equipment was needed. To remove the old gear I need a punch to knock out the pressed pin. To slide in the new spring pin I used a metal vise and some blocks of wood. If you don't understand this level, buy a pre-assembled assembly, where the gearbox is mounted on a new axle with all the bearings. Then it's a drop. I should have done that and saved a few bucks more time. I see room for error when an inexperienced person does it. 3 equally spaced screws (120* spacing) secure the subassembly to the chassis. I accidentally rotated it 120* and ended up having to adjust the PATH door limit settings to work. It was easier than untying the knot. Not the fault of the product. The design of the door opener should have 3 screw holes staggered to avoid mistakes. Don't forget to grease the gears. While you're at it, spray some lube on all moving parts of the door itself and the rails. lots of loops and links.