那个弹簧,我自己装的。因为是新车库,所以我只有装的经验,没有拆的经验。我觉得,拆旧弹簧的时候,要小心,因为弹簧已经被上紧了。8 L) a' M! t3 s+ X7 S3 R
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装弹簧的时候,我是按照按照说明书一步步做的。说明书里,要求安装弹簧的时候,用专门的工具。我没有去买,而是用两条10mm的钢筋,很好用。钢筋可以在 home depot 买到。
My husband was first wanting to try by himself; since it is very dangerous, we googled and found Robert garage door Edmonton and that guy did very good. Recommend to you.