Craftsman Garage Door Opener Drive/worm gear replacement
Hi. My drive gear is shot on my Craftsman 139.53615SR - 1/2HP garage door opener. I ordered the replacement kit from Sears. I started the repair, but now I'm confused. I cannot lower the motor/bracket assembly because where the drive shaft passes through the motor support plate, there are bushings/collars? directly below the motor support plate. These bushings/collars are above where I removed the limit drive gear/retainer clip. The replacement sprocket assembly does not have these bushings/collars. The original owners manual does not show these bushings/collars. I could take and post a photo if that can be done here. Thanks!