Advantage: frame can open, make replacing hammer head, back plate and lining board work easier.

优势：机架可以开启，使得更换锤头、反击板及衬板的工作更加简便易行。

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Square one: Unload inside lining board in the car thumb latch.

第一步：肸卸下车门内衬板。

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Square one: Unload inside lining board in the car thumb latch.

第一步：肸卸下车门内衬板。

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