One driving gear inside has plastic on one side, totally worn ou

来源: sneezy888 于 2015-01-05 17:33:37 [] [旧帖] [给我悄悄话] 本文已被阅读： 0 次 (299 bytes)
本文内容已被 [ sneezy888 ] 在 2015-01-05 17:37:50 编辑过。如有问题，请报告版主或论坛管理删除.
回答: 车库门出了问题 由 investfun 于 2015-01-05 13:58:11
happened to me two months ago... replaced for $140 by garage door guy, but now I found that it is available in Amazon:
http://www.amazon.com/Chamberlain-LiftMaster-Craftsman-41C4220A-Sprocket/dp/B00023RTD6/ref=sr_1_4?ie=UTF8&qid=1420508103&sr=8-4&keywords=garage+door+drive+gear
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